C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 211147
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville IL
647 AM CDT Thu Aug 21 2025
Winnebago-Boone-McHenry-Ogle-Lee-De Kalb-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Rochelle, Oregon, Byron, Dixon,
DeKalb, and Sycamore
647 AM CDT Thu Aug 21 2025
...LOCALLY DENSE FOG THIS MORNING...
Areas of fog are developing across portions of northwest Illinois
this morning some of which is locally dense with visibilities of a
quarter mile or less. Commuters should be prepared for sharp
changes in visibility, allow for extra travel time, and use low
beams.
Fog is expected to erode after 9 AM CDT this morning.
https://wxn.io/0ngjh
John Jensen K9WXX of McHenry County Weather is an avid and passionate weather geek who post watches, warnings and advisories on our blog and Facebook
Established: 2013
Coverage Area:
McHenry County, IL
Thursday, August 21, 2025
Tuesday, August 19, 2025
Areal Flood Watch Cancellation for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 190811
FFALOT
Flood Watch
National Weather Service Chicago IL
311 AM CDT Tue Aug 19 2025
/O.CAN.KLOT.FA.A.0009.000000T0000Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Streator, Marseilles, Sycamore,
Schaumburg, Wilmington, Mundelein, Algonquin, Waukegan, McHenry,
Aurora, Rockford, Joliet, Des Plaines, Portage, Oswego, Oak
Forest, Dixon, Crystal Lake, Beecher, Byron, Lombard, Yorkville,
Bradley, Gary, Oak Park, Calumet City, Crete, Peotone, Buffalo
Grove, Park Forest, Ottawa, Downers Grove, Cicero, Gurnee,
Hammond, DeKalb, Plano, Manhattan, Oregon, Merrillville,
Evanston, Minooka, Northbrook, Oak Lawn, Bolingbrook, Kankakee,
La Grange, Morris, Palatine, Carol Stream, Mokena, Elgin,
Mendota, Woodstock, Rochelle, Orland Park, Plainfield, Lemont,
Chicago, Channahon, Belvidere, La Salle, Naperville, Wheaton,
Chesterton, Bourbonnais, Valparaiso, and Coal City
311 AM CDT Tue Aug 19 2025
...FLOOD WATCH IS CANCELLED...
The Flash Flood Watch is cancelled for portions of Illinois,
including the following areas, Boone, Central Cook, De Kalb, DuPage,
Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL,
Lee, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook,
Southern Will and Winnebago and northwest Indiana, including the
following areas, Lake IN and Porter.
Additional heavy rain is not expected through the remainder of the
morning on a widespread basis. With that said, various areas are
experiencing flooding due to heavy rain yesterday. For those areas,
Flood Advisories or Flood Warnings are in effect.
https://wxn.io/4yj9g
WGUS63 KLOT 190811
FFALOT
Flood Watch
National Weather Service Chicago IL
311 AM CDT Tue Aug 19 2025
/O.CAN.KLOT.FA.A.0009.000000T0000Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Streator, Marseilles, Sycamore,
Schaumburg, Wilmington, Mundelein, Algonquin, Waukegan, McHenry,
Aurora, Rockford, Joliet, Des Plaines, Portage, Oswego, Oak
Forest, Dixon, Crystal Lake, Beecher, Byron, Lombard, Yorkville,
Bradley, Gary, Oak Park, Calumet City, Crete, Peotone, Buffalo
Grove, Park Forest, Ottawa, Downers Grove, Cicero, Gurnee,
Hammond, DeKalb, Plano, Manhattan, Oregon, Merrillville,
Evanston, Minooka, Northbrook, Oak Lawn, Bolingbrook, Kankakee,
La Grange, Morris, Palatine, Carol Stream, Mokena, Elgin,
Mendota, Woodstock, Rochelle, Orland Park, Plainfield, Lemont,
Chicago, Channahon, Belvidere, La Salle, Naperville, Wheaton,
Chesterton, Bourbonnais, Valparaiso, and Coal City
311 AM CDT Tue Aug 19 2025
...FLOOD WATCH IS CANCELLED...
The Flash Flood Watch is cancelled for portions of Illinois,
including the following areas, Boone, Central Cook, De Kalb, DuPage,
Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL,
Lee, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook,
Southern Will and Winnebago and northwest Indiana, including the
following areas, Lake IN and Porter.
Additional heavy rain is not expected through the remainder of the
morning on a widespread basis. With that said, various areas are
experiencing flooding due to heavy rain yesterday. For those areas,
Flood Advisories or Flood Warnings are in effect.
https://wxn.io/4yj9g
Monday, August 18, 2025
Areal Flood Watch for McHenry Co., IL until 4:00 AM CDT 8/19
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 190224
FFALOT
Flood Watch
National Weather Service Chicago IL
924 PM CDT Mon Aug 18 2025
/O.CON.KLOT.FA.A.0009.000000T0000Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Wheaton, Yorkville, Streator, Waukegan,
Mokena, Chesterton, DeKalb, Belvidere, Crystal Lake, Peotone,
Oregon, Woodstock, Plano, Bradley, Calumet City, Bolingbrook,
Aurora, McHenry, Evanston, Byron, Cicero, Channahon, Oswego, Oak
Lawn, Oak Forest, La Grange, Rockford, Gurnee, Oak Park,
Bourbonnais, Lemont, Park Forest, Morris, Hammond, Merrillville,
Northbrook, Rochelle, Valparaiso, Marseilles, Orland Park,
Buffalo Grove, Schaumburg, Manhattan, Ottawa, Kankakee, Downers
Grove, Palatine, Naperville, Elgin, Mundelein, Wilmington,
Sycamore, Crete, Beecher, Gary, Lombard, Algonquin, Joliet,
Chicago, Portage, Dixon, Carol Stream, Mendota, Minooka, Des
Plaines, Coal City, Plainfield, and La Salle
924 PM CDT Mon Aug 18 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Illinois, including the following areas,
Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane,
Kankakee, Kendall, La Salle, Lake IL, Lee, McHenry, Northern Cook,
Northern Will, Ogle, Southern Cook, Southern Will and Winnebago
and northwest Indiana, including the following areas, Lake IN and
Porter.
* WHEN...Until 4 AM CDT Tuesday.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded. Area creeks and streams are already elevated,
increasing the risk of flooding due to additional rainfall.
Exte...
https://wxn.io/33jzo
WGUS63 KLOT 190224
FFALOT
Flood Watch
National Weather Service Chicago IL
924 PM CDT Mon Aug 18 2025
/O.CON.KLOT.FA.A.0009.000000T0000Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Wheaton, Yorkville, Streator, Waukegan,
Mokena, Chesterton, DeKalb, Belvidere, Crystal Lake, Peotone,
Oregon, Woodstock, Plano, Bradley, Calumet City, Bolingbrook,
Aurora, McHenry, Evanston, Byron, Cicero, Channahon, Oswego, Oak
Lawn, Oak Forest, La Grange, Rockford, Gurnee, Oak Park,
Bourbonnais, Lemont, Park Forest, Morris, Hammond, Merrillville,
Northbrook, Rochelle, Valparaiso, Marseilles, Orland Park,
Buffalo Grove, Schaumburg, Manhattan, Ottawa, Kankakee, Downers
Grove, Palatine, Naperville, Elgin, Mundelein, Wilmington,
Sycamore, Crete, Beecher, Gary, Lombard, Algonquin, Joliet,
Chicago, Portage, Dixon, Carol Stream, Mendota, Minooka, Des
Plaines, Coal City, Plainfield, and La Salle
924 PM CDT Mon Aug 18 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Illinois, including the following areas,
Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane,
Kankakee, Kendall, La Salle, Lake IL, Lee, McHenry, Northern Cook,
Northern Will, Ogle, Southern Cook, Southern Will and Winnebago
and northwest Indiana, including the following areas, Lake IN and
Porter.
* WHEN...Until 4 AM CDT Tuesday.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded. Area creeks and streams are already elevated,
increasing the risk of flooding due to additional rainfall.
Exte...
https://wxn.io/33jzo
Severe Thunderstorm Watch Cancellation for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS63 KLOT 190056
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
756 PM CDT MON AUG 18 2025
/O.CAN.KLOT.SV.A.0599.000000T0000Z-250819T0100Z/
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 599 FOR THE FOLLOWING AREAS
IN ILLINOIS THIS CANCELS 7 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LEE
OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
KANE MCHENRY
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON,
CRYSTAL LAKE, DEKALB, DIXON, ELGIN, MCHENRY, OREGON, ROCHELLE,
ROCKFORD, SYCAMORE, AND WOODSTOCK.
https://wxn.io/blns1
WWUS63 KLOT 190056
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
756 PM CDT MON AUG 18 2025
/O.CAN.KLOT.SV.A.0599.000000T0000Z-250819T0100Z/
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 599 FOR THE FOLLOWING AREAS
IN ILLINOIS THIS CANCELS 7 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LEE
OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
KANE MCHENRY
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON,
CRYSTAL LAKE, DEKALB, DIXON, ELGIN, MCHENRY, OREGON, ROCHELLE,
ROCKFORD, SYCAMORE, AND WOODSTOCK.
https://wxn.io/blns1
Severe Thunderstorm Watch for McHenry Co., IL until 8:00 PM CDT 8/18
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS63 KLOT 182246
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
546 PM CDT MON AUG 18 2025
/O.EXT.KLOT.SV.A.0599.000000T0000Z-250819T0100Z/
SEVERE THUNDERSTORM WATCH 599, PREVIOUSLY IN EFFECT UNTIL 6 PM
CDT THIS EVENING, IS NOW IN EFFECT UNTIL 8 PM CDT THIS EVENING
FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 10 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
GRUNDY KANE KENDALL
MCHENRY
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON,
COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, LA SALLE,
MARSEILLES, MCHENRY, MENDOTA, MINOOKA, MORRIS, OREGON, OSWEGO,
OTTAWA, PLANO, ROCHELLE, ROCKFORD, STREATOR, SYCAMORE, WOODSTOCK,
AND YORKVILLE.
https://wxn.io/mhqwg
WWUS63 KLOT 182246
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
546 PM CDT MON AUG 18 2025
/O.EXT.KLOT.SV.A.0599.000000T0000Z-250819T0100Z/
SEVERE THUNDERSTORM WATCH 599, PREVIOUSLY IN EFFECT UNTIL 6 PM
CDT THIS EVENING, IS NOW IN EFFECT UNTIL 8 PM CDT THIS EVENING
FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 10 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
GRUNDY KANE KENDALL
MCHENRY
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON,
COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, LA SALLE,
MARSEILLES, MCHENRY, MENDOTA, MINOOKA, MORRIS, OREGON, OSWEGO,
OTTAWA, PLANO, ROCHELLE, ROCKFORD, STREATOR, SYCAMORE, WOODSTOCK,
AND YORKVILLE.
https://wxn.io/mhqwg
Areal Flood Watch for McHenry Co., IL until 4:00 AM CDT 8/19
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 181921
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
221 PM CDT Mon Aug 18 2025
/O.NEW.KLOT.FA.A.0009.250818T1921Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Oak Lawn, Buffalo Grove, Oak Park,
Crystal Lake, Rockford, Wheaton, Channahon, Portage, Minooka,
Cicero, Marseilles, La Salle, Elgin, Kankakee, Palatine, Orland
Park, Downers Grove, Mendota, DeKalb, Naperville, Dixon, Lombard,
Ottawa, Streator, Bourbonnais, Gurnee, Evanston, Wilmington,
Beecher, Merrillville, Belvidere, Byron, Mundelein, Crete, La
Grange, Woodstock, Northbrook, Bradley, Waukegan, Valparaiso,
Lemont, McHenry, Chesterton, Carol Stream, Chicago, Manhattan,
Schaumburg, Bolingbrook, Sycamore, Oregon, Mokena, Peotone,
Rochelle, Morris, Oak Forest, Oswego, Park Forest, Joliet,
Calumet City, Algonquin, Des Plaines, Yorkville, Aurora,
Plainfield, Hammond, Gary, Coal City, and Plano
221 PM CDT Mon Aug 18 2025
...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...For the following counties, in Illinois, Boone, Cook, De
Kalb, DuPage, Grundy, Kane, Kankakee, Kendall, La Salle, Lake,
Lee, McHenry, Ogle, Will, and Winnebago, and for Lake and Porter
counties in Indiana.
* WHEN...Through late tonight.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded. Widespread, significant street flooding possible. Area
creeks and streams are already elevated, reducing how much
rainfall is needed for flooding to occur.
* ADDITIONAL DETAILS...
- Soil moisture in many areas is above a...
https://wxn.io/h5yde
WGUS63 KLOT 181921
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
221 PM CDT Mon Aug 18 2025
/O.NEW.KLOT.FA.A.0009.250818T1921Z-250819T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-
Including the cities of Oak Lawn, Buffalo Grove, Oak Park,
Crystal Lake, Rockford, Wheaton, Channahon, Portage, Minooka,
Cicero, Marseilles, La Salle, Elgin, Kankakee, Palatine, Orland
Park, Downers Grove, Mendota, DeKalb, Naperville, Dixon, Lombard,
Ottawa, Streator, Bourbonnais, Gurnee, Evanston, Wilmington,
Beecher, Merrillville, Belvidere, Byron, Mundelein, Crete, La
Grange, Woodstock, Northbrook, Bradley, Waukegan, Valparaiso,
Lemont, McHenry, Chesterton, Carol Stream, Chicago, Manhattan,
Schaumburg, Bolingbrook, Sycamore, Oregon, Mokena, Peotone,
Rochelle, Morris, Oak Forest, Oswego, Park Forest, Joliet,
Calumet City, Algonquin, Des Plaines, Yorkville, Aurora,
Plainfield, Hammond, Gary, Coal City, and Plano
221 PM CDT Mon Aug 18 2025
...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...For the following counties, in Illinois, Boone, Cook, De
Kalb, DuPage, Grundy, Kane, Kankakee, Kendall, La Salle, Lake,
Lee, McHenry, Ogle, Will, and Winnebago, and for Lake and Porter
counties in Indiana.
* WHEN...Through late tonight.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded. Widespread, significant street flooding possible. Area
creeks and streams are already elevated, reducing how much
rainfall is needed for flooding to occur.
* ADDITIONAL DETAILS...
- Soil moisture in many areas is above a...
https://wxn.io/h5yde
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 181912
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
212 PM CDT Mon Aug 18 2025
McHenry IL-
212 PM CDT Mon Aug 18 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN MCHENRY COUNTY THROUGH
245 PM CDT...
At 212 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hebron, or near Harvard, moving east at 30 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Greenwood, Wonder Lake, Spring Grove, McCullom Lake, Woodstock,
Hebron, Holiday Hills, McHenry, Lakemoor, Bull Valley, Johnsburg,
Ringwood, Richmond, Pistakee Highlands, Prairie Grove, Island Lake,
and Fox Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
northeastern Illinois.
&&
LAT...LON 4228 8820 4230 8861 4250 8858 4249 8820
TIME...MOT...LOC 1912Z 271DEG 26KT 4241 8849
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
https://wxn.io/nleui
WWUS83 KLOT 181912
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
212 PM CDT Mon Aug 18 2025
McHenry IL-
212 PM CDT Mon Aug 18 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN MCHENRY COUNTY THROUGH
245 PM CDT...
At 212 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hebron, or near Harvard, moving east at 30 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Greenwood, Wonder Lake, Spring Grove, McCullom Lake, Woodstock,
Hebron, Holiday Hills, McHenry, Lakemoor, Bull Valley, Johnsburg,
Ringwood, Richmond, Pistakee Highlands, Prairie Grove, Island Lake,
and Fox Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
northeastern Illinois.
&&
LAT...LON 4228 8820 4230 8861 4250 8858 4249 8820
TIME...MOT...LOC 1912Z 271DEG 26KT 4241 8849
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
https://wxn.io/nleui
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 181845
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
145 PM CDT Mon Aug 18 2025
Boone IL-McHenry IL-
145 PM CDT Mon Aug 18 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN MCHENRY AND
NORTHERN BOONE COUNTIES THROUGH 215 PM CDT...
At 145 PM CDT, Doppler radar was tracking a strong thunderstorm over
Capron, or near Poplar Grove, moving east at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Poplar Grove, Harvard, Candlewick Lake, Timberlane, Chemung, Capron,
and Caledonia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
north central and northeastern Illinois.
&&
LAT...LON 4232 8853 4233 8891 4249 8881 4249 8847
TIME...MOT...LOC 1845Z 270DEG 26KT 4239 8875
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
https://wxn.io/wz0f2
WWUS83 KLOT 181845
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
145 PM CDT Mon Aug 18 2025
Boone IL-McHenry IL-
145 PM CDT Mon Aug 18 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN MCHENRY AND
NORTHERN BOONE COUNTIES THROUGH 215 PM CDT...
At 145 PM CDT, Doppler radar was tracking a strong thunderstorm over
Capron, or near Poplar Grove, moving east at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Poplar Grove, Harvard, Candlewick Lake, Timberlane, Chemung, Capron,
and Caledonia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
north central and northeastern Illinois.
&&
LAT...LON 4232 8853 4233 8891 4249 8881 4249 8847
TIME...MOT...LOC 1845Z 270DEG 26KT 4239 8875
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
https://wxn.io/wz0f2
Severe Thunderstorm Watch for McHenry Co., IL until 6:00 PM CDT 8/18
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS63 KLOT 181723
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
1223 PM CDT MON AUG 18 2025
/O.NEW.KLOT.SV.A.0599.250818T1723Z-250818T2300Z/
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
599 IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 14 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE GRUNDY
KANE KENDALL LAKE IL
MCHENRY WILL
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHICAGO,
COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, DOWNERS GROVE, ELGIN,
EVANSTON, GURNEE, JOLIET, LA SALLE, LEMONT, LOMBARD, MARSEILLES,
MCHENRY, MENDOTA, MINOOKA, MORRIS, MUNDELEIN, NAPERVILLE,
OAK LAWN, OREGON, ORLAND PARK, OSWEGO, OTTAWA, PARK FOREST,
PLANO, ROCHELLE, ROCKFORD, SCHAUMBURG, STREATOR, SYCAMORE,
WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/44mg4
WWUS63 KLOT 181723
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
1223 PM CDT MON AUG 18 2025
/O.NEW.KLOT.SV.A.0599.250818T1723Z-250818T2300Z/
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
599 IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 14 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE GRUNDY
KANE KENDALL LAKE IL
MCHENRY WILL
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHICAGO,
COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, DOWNERS GROVE, ELGIN,
EVANSTON, GURNEE, JOLIET, LA SALLE, LEMONT, LOMBARD, MARSEILLES,
MCHENRY, MENDOTA, MINOOKA, MORRIS, MUNDELEIN, NAPERVILLE,
OAK LAWN, OREGON, ORLAND PARK, OSWEGO, OTTAWA, PARK FOREST,
PLANO, ROCHELLE, ROCKFORD, SCHAUMBURG, STREATOR, SYCAMORE,
WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/44mg4
Sunday, August 17, 2025
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 170646
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
146 AM CDT Sun Aug 17 2025
Lake IL-Kane IL-McHenry IL-Northern Cook IL-
146 AM CDT Sun Aug 17 2025
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN LAKE...NORTHERN
KANE...SOUTHEASTERN MCHENRY AND NORTHWESTERN COOK COUNTIES THROUGH
215 AM CDT...
At 146 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Prairie Grove to near Lake in the Hills to
near Hampshire. Movement was east southeast at 35 mph.
HAZARD...Localized wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Oakwood Hills, Wauconda, Fox River Grove, Algonquin, Port Barrington,
West Dundee, Hawthorn Woods, Deer Park, Ridgefield, Huntley,
Inverness, South Barrington, Gilberts, Tower Lakes, Lakewood,
Libertyville, Volo, Crystal Lake, Barrington Hills, Sleepy Hollow,
Hoffman Estates, Forest Lake, Barrington, Carpentersville, and Lake
Barrington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4233 8792 4207 8807 4205 8828 4209 8859
4215 8859 4219 8845 4235 8834
TIME...MOT...LOC 0646Z 288DEG 30KT 4230 8829 4218 8837 4213 8856
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/20l47
WWUS83 KLOT 170646
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
146 AM CDT Sun Aug 17 2025
Lake IL-Kane IL-McHenry IL-Northern Cook IL-
146 AM CDT Sun Aug 17 2025
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN LAKE...NORTHERN
KANE...SOUTHEASTERN MCHENRY AND NORTHWESTERN COOK COUNTIES THROUGH
215 AM CDT...
At 146 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Prairie Grove to near Lake in the Hills to
near Hampshire. Movement was east southeast at 35 mph.
HAZARD...Localized wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Oakwood Hills, Wauconda, Fox River Grove, Algonquin, Port Barrington,
West Dundee, Hawthorn Woods, Deer Park, Ridgefield, Huntley,
Inverness, South Barrington, Gilberts, Tower Lakes, Lakewood,
Libertyville, Volo, Crystal Lake, Barrington Hills, Sleepy Hollow,
Hoffman Estates, Forest Lake, Barrington, Carpentersville, and Lake
Barrington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4233 8792 4207 8807 4205 8828 4209 8859
4215 8859 4219 8845 4235 8834
TIME...MOT...LOC 0646Z 288DEG 30KT 4230 8829 4218 8837 4213 8856
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/20l47
Areal Flood Advisory for McHenry Co., IL until 4:00 AM CDT 8/17
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS83 KLOT 170641
FLSLOT
Flood Advisory
National Weather Service Chicago IL
141 AM CDT Sun Aug 17 2025
/O.NEW.KLOT.FA.Y.0068.250817T0641Z-250817T0900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Lake IL IL-McHenry IL-
141 AM CDT Sun Aug 17 2025
...FLOOD ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...A portion of northeast Illinois, including the following
counties, Cook, DuPage, Kane, Lake IL and McHenry.
* WHEN...Until 400 AM CDT.
* IMPACTS...Flooding may occur in poor drainage and urban areas,
including flooded underpasses, roads, and streets. Creeks and
streams may rise out of their banks.
* ADDITIONAL DETAILS...
- At 138 AM CDT, Doppler radar indicated scattered torrential
rainfall producing thunderstorms across the advisory area.
- Additional rainfall amounts of 1 to 2 inches are expected
over the areas that receive the heaviest rain. Runoff from
the rain that has fallen and from additional rainfall will
result in flooding.
- Some locations that will experience flooding include...
The north side of Chicago, Naperville, Elgin, Waukegan,
Arlington Heights, Evanston, Schaumburg, Palatine, Skokie,
Des Plaines, Mount Prospect, Wheaton, Hoffman Estates,
Downers Grove, Glenview, Elmhurst, Lombard, Buffalo Grove,
Bartlett and Crystal Lake.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4249 8844 4237 8780 4235 8781 4231 8781
4229 8782 4227 8781 4214 8773 4208 8767
4193 8761 4194 8792 4174 8792 4177 8810
4192 8816 4211 8859 4215 8859 4215 8868
4216 8871 4249 8870
https://wxn.io/rjif6
WGUS83 KLOT 170641
FLSLOT
Flood Advisory
National Weather Service Chicago IL
141 AM CDT Sun Aug 17 2025
/O.NEW.KLOT.FA.Y.0068.250817T0641Z-250817T0900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Lake IL IL-McHenry IL-
141 AM CDT Sun Aug 17 2025
...FLOOD ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...A portion of northeast Illinois, including the following
counties, Cook, DuPage, Kane, Lake IL and McHenry.
* WHEN...Until 400 AM CDT.
* IMPACTS...Flooding may occur in poor drainage and urban areas,
including flooded underpasses, roads, and streets. Creeks and
streams may rise out of their banks.
* ADDITIONAL DETAILS...
- At 138 AM CDT, Doppler radar indicated scattered torrential
rainfall producing thunderstorms across the advisory area.
- Additional rainfall amounts of 1 to 2 inches are expected
over the areas that receive the heaviest rain. Runoff from
the rain that has fallen and from additional rainfall will
result in flooding.
- Some locations that will experience flooding include...
The north side of Chicago, Naperville, Elgin, Waukegan,
Arlington Heights, Evanston, Schaumburg, Palatine, Skokie,
Des Plaines, Mount Prospect, Wheaton, Hoffman Estates,
Downers Grove, Glenview, Elmhurst, Lombard, Buffalo Grove,
Bartlett and Crystal Lake.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4249 8844 4237 8780 4235 8781 4231 8781
4229 8782 4227 8781 4214 8773 4208 8767
4193 8761 4194 8792 4174 8792 4177 8810
4192 8816 4211 8859 4215 8859 4215 8868
4216 8871 4249 8870
https://wxn.io/rjif6
Saturday, August 16, 2025
Severe Thunderstorm Watch Cancellation for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS63 KLOT 162356
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 596
NATIONAL WEATHER SERVICE CHICAGO IL
656 PM CDT SAT AUG 16 2025
/O.CAN.KLOT.SV.A.0596.000000T0000Z-250817T0000Z/
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 596 FOR THE FOLLOWING AREAS
IN ILLINOIS THIS CANCELS 11 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB OGLE
WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE KANE
KENDALL LAKE IL MCHENRY
WILL
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHICAGO,
CRYSTAL LAKE, DEKALB, DOWNERS GROVE, ELGIN, EVANSTON, GURNEE,
JOLIET, LEMONT, LOMBARD, MCHENRY, MUNDELEIN, NAPERVILLE,
OAK LAWN, OREGON, ORLAND PARK, OSWEGO, PARK FOREST, PLANO,
ROCHELLE, ROCKFORD, SCHAUMBURG, SYCAMORE, WAUKEGAN, WHEATON,
WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/4nya7
WWUS63 KLOT 162356
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 596
NATIONAL WEATHER SERVICE CHICAGO IL
656 PM CDT SAT AUG 16 2025
/O.CAN.KLOT.SV.A.0596.000000T0000Z-250817T0000Z/
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 596 FOR THE FOLLOWING AREAS
IN ILLINOIS THIS CANCELS 11 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB OGLE
WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE KANE
KENDALL LAKE IL MCHENRY
WILL
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHICAGO,
CRYSTAL LAKE, DEKALB, DOWNERS GROVE, ELGIN, EVANSTON, GURNEE,
JOLIET, LEMONT, LOMBARD, MCHENRY, MUNDELEIN, NAPERVILLE,
OAK LAWN, OREGON, ORLAND PARK, OSWEGO, PARK FOREST, PLANO,
ROCHELLE, ROCKFORD, SCHAUMBURG, SYCAMORE, WAUKEGAN, WHEATON,
WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/4nya7
Severe Thunderstorm Warning for McHenry Co., IL until 4:15 PM CDT 8/16
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WUUS53 KLOT 162021
SVRLOT
/O.NEW.KLOT.SV.W.0103.250816T2021Z-250816T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
321 PM CDT Sat Aug 16 2025
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Northwestern Lake County in northeastern Illinois...
McHenry County in northeastern Illinois...
* Until 415 PM CDT.
* At 321 PM CDT, severe thunderstorms were located along a line
extending from near Hebron to near Harvard to near Marengo, moving
southeast at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Oakwood Hills, Wauconda, Fox River Grove, Spring Grove, McCullom
Lake, Lake Villa, Algonquin, Union, Woodstock, Fox Lake Hills, Port
Barrington, Fox Lake, Holiday Hills, McHenry, Ridgefield, Round
Lake Beach, Lakemoor, Cary, Johnsburg, Ringwood, Hainesville,
Pistakee Highlands, Huntley, Grayslake, and Island Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4246 8813 4237 8801 4216 8824 4215 8826
4215 8862 4224 8871 4236 8846 4250 8837
4250 8829
TIME...MOT...LOC 2021Z 314DEG 26KT 4245 8847 4236 8854 4230 8867
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
https://wxn.io/ue2gp
WUUS53 KLOT 162021
SVRLOT
/O.NEW.KLOT.SV.W.0103.250816T2021Z-250816T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
321 PM CDT Sat Aug 16 2025
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Northwestern Lake County in northeastern Illinois...
McHenry County in northeastern Illinois...
* Until 415 PM CDT.
* At 321 PM CDT, severe thunderstorms were located along a line
extending from near Hebron to near Harvard to near Marengo, moving
southeast at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Oakwood Hills, Wauconda, Fox River Grove, Spring Grove, McCullom
Lake, Lake Villa, Algonquin, Union, Woodstock, Fox Lake Hills, Port
Barrington, Fox Lake, Holiday Hills, McHenry, Ridgefield, Round
Lake Beach, Lakemoor, Cary, Johnsburg, Ringwood, Hainesville,
Pistakee Highlands, Huntley, Grayslake, and Island Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4246 8813 4237 8801 4216 8824 4215 8826
4215 8862 4224 8871 4236 8846 4250 8837
4250 8829
TIME...MOT...LOC 2021Z 314DEG 26KT 4245 8847 4236 8854 4230 8867
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
https://wxn.io/ue2gp
Severe Thunderstorm Watch for McHenry Co., IL until 7:00 PM CDT 8/16
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS63 KLOT 161856
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 596
NATIONAL WEATHER SERVICE CHICAGO IL
156 PM CDT SAT AUG 16 2025
/O.NEW.KLOT.SV.A.0596.250816T1856Z-250817T0000Z/
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
596 IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 11 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB OGLE
WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE KANE
KENDALL LAKE IL MCHENRY
WILL
IN INDIANA THIS WATCH INCLUDES 2 COUNTIES
IN NORTHWEST INDIANA
LAKE IN PORTER
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHESTERTON,
CHICAGO, CRYSTAL LAKE, DEKALB, DOWNERS GROVE, ELGIN, EVANSTON,
GARY, GURNEE, HAMMOND, JOLIET, LEMONT, LOMBARD, MCHENRY,
MERRILLVILLE, MUNDELEIN, NAPERVILLE, OAK LAWN, OREGON,
ORLAND PARK, OSWEGO, PARK FOREST, PLANO, PORTAGE, ROCHELLE,
ROCKFORD, SCHAUMBURG, SYCAMORE, VALPARAISO, WAUKEGAN, WHEATON,
WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/aojri
WWUS63 KLOT 161856
WCNLOT
WATCH COUNTY NOTIFICATION FOR WATCH 596
NATIONAL WEATHER SERVICE CHICAGO IL
156 PM CDT SAT AUG 16 2025
/O.NEW.KLOT.SV.A.0596.250816T1856Z-250817T0000Z/
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
596 IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 11 COUNTIES
IN NORTH CENTRAL ILLINOIS
BOONE DE KALB OGLE
WINNEBAGO
IN NORTHEAST ILLINOIS
COOK DUPAGE KANE
KENDALL LAKE IL MCHENRY
WILL
IN INDIANA THIS WATCH INCLUDES 2 COUNTIES
IN NORTHWEST INDIANA
LAKE IN PORTER
THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHESTERTON,
CHICAGO, CRYSTAL LAKE, DEKALB, DOWNERS GROVE, ELGIN, EVANSTON,
GARY, GURNEE, HAMMOND, JOLIET, LEMONT, LOMBARD, MCHENRY,
MERRILLVILLE, MUNDELEIN, NAPERVILLE, OAK LAWN, OREGON,
ORLAND PARK, OSWEGO, PARK FOREST, PLANO, PORTAGE, ROCHELLE,
ROCKFORD, SCHAUMBURG, SYCAMORE, VALPARAISO, WAUKEGAN, WHEATON,
WILMINGTON, WOODSTOCK, AND YORKVILLE.
https://wxn.io/aojri
Tuesday, August 12, 2025
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 120927
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
427 AM CDT Tue Aug 12 2025
De Kalb IL-Boone IL-McHenry IL-
427 AM CDT Tue Aug 12 2025
...STRONG THUNDERSTORMS WILL IMPACT NORTHERN DE KALB...WESTERN
MCHENRY AND BOONE COUNTIES THROUGH 515 AM CDT...
At 426 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Rockton to near Rockford
to near Malta. Movement was northeast at 40 mph. Rockford Airport
recorded a 44 mph wind gust with these storms.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar and observations.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Poplar Grove, Candlewick Lake, Kirkland, Kingston, Fairdale,
Caledonia, Harvard, Marengo, Genoa, Timberlane, Garden Prairie,
Chemung, Belvidere, Capron, Sharon, Cherry Valley, Sycamore, and
Loves Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4250 8853 4215 8858 4215 8859 4207 8859
4206 8860 4201 8860 4199 8894 4250 8894
TIME...MOT...LOC 0926Z 245DEG 36KT 4249 8919 4227 8902 4196 8896
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/4bsqg
WWUS83 KLOT 120927
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
427 AM CDT Tue Aug 12 2025
De Kalb IL-Boone IL-McHenry IL-
427 AM CDT Tue Aug 12 2025
...STRONG THUNDERSTORMS WILL IMPACT NORTHERN DE KALB...WESTERN
MCHENRY AND BOONE COUNTIES THROUGH 515 AM CDT...
At 426 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Rockton to near Rockford
to near Malta. Movement was northeast at 40 mph. Rockford Airport
recorded a 44 mph wind gust with these storms.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar and observations.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Poplar Grove, Candlewick Lake, Kirkland, Kingston, Fairdale,
Caledonia, Harvard, Marengo, Genoa, Timberlane, Garden Prairie,
Chemung, Belvidere, Capron, Sharon, Cherry Valley, Sycamore, and
Loves Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4250 8853 4215 8858 4215 8859 4207 8859
4206 8860 4201 8860 4199 8894 4250 8894
TIME...MOT...LOC 0926Z 245DEG 36KT 4249 8919 4227 8902 4196 8896
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/4bsqg
Sunday, August 10, 2025
Areal Flood Watch Expiration for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 101511
FFALOT
Flood Watch
National Weather Service Chicago IL
1011 AM CDT Sun Aug 10 2025
/O.EXP.KLOT.FA.A.0007.000000T0000Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Woodstock, Buffalo Grove, Mundelein,
Gurnee, Waukegan, Rockford, Belvidere, Crystal Lake, McHenry, and
Algonquin
1011 AM CDT Sun Aug 10 2025
...FLOOD WATCH HAS EXPIRED...
The Flood Watch has expired for portions of north central and
northeast Illinois, including the following areas, in north central
Illinois, Boone and Winnebago. In northeast Illinois, Lake IL and
McHenry.
The flooding threat has ended. Therefore, the Flood Watch has
expired.
https://wxn.io/qs2vj
WGUS63 KLOT 101511
FFALOT
Flood Watch
National Weather Service Chicago IL
1011 AM CDT Sun Aug 10 2025
/O.EXP.KLOT.FA.A.0007.000000T0000Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Woodstock, Buffalo Grove, Mundelein,
Gurnee, Waukegan, Rockford, Belvidere, Crystal Lake, McHenry, and
Algonquin
1011 AM CDT Sun Aug 10 2025
...FLOOD WATCH HAS EXPIRED...
The Flood Watch has expired for portions of north central and
northeast Illinois, including the following areas, in north central
Illinois, Boone and Winnebago. In northeast Illinois, Lake IL and
McHenry.
The flooding threat has ended. Therefore, the Flood Watch has
expired.
https://wxn.io/qs2vj
Areal Flood Watch for McHenry Co., IL until 10:00 AM CDT 8/10
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 100851
FFALOT
Flood Watch
National Weather Service Chicago IL
351 AM CDT Sun Aug 10 2025
/O.CON.KLOT.FA.A.0007.000000T0000Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Belvidere, McHenry, Waukegan, Rockford,
Woodstock, Algonquin, Buffalo Grove, Crystal Lake, Gurnee, and
Mundelein
351 AM CDT Sun Aug 10 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of north central and northeast Illinois,
including the following areas, in north central Illinois, Boone
and Winnebago. In northeast Illinois, Lake IL and McHenry.
* WHEN...Until 10 AM CDT this morning.
* IMPACTS...Creeks and streams may rise out of their banks. Roads
and streets may be flooded.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means flooding is possible, but not yet certain, based
upon the latest forecasts. Persons with interests along area rivers,
creeks, and other waterways should monitor the latest forecasts and
be prepared to take action should flooding develop.
&&
https://wxn.io/o2ukt
WGUS63 KLOT 100851
FFALOT
Flood Watch
National Weather Service Chicago IL
351 AM CDT Sun Aug 10 2025
/O.CON.KLOT.FA.A.0007.000000T0000Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Belvidere, McHenry, Waukegan, Rockford,
Woodstock, Algonquin, Buffalo Grove, Crystal Lake, Gurnee, and
Mundelein
351 AM CDT Sun Aug 10 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of north central and northeast Illinois,
including the following areas, in north central Illinois, Boone
and Winnebago. In northeast Illinois, Lake IL and McHenry.
* WHEN...Until 10 AM CDT this morning.
* IMPACTS...Creeks and streams may rise out of their banks. Roads
and streets may be flooded.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means flooding is possible, but not yet certain, based
upon the latest forecasts. Persons with interests along area rivers,
creeks, and other waterways should monitor the latest forecasts and
be prepared to take action should flooding develop.
&&
https://wxn.io/o2ukt
Saturday, August 9, 2025
Areal Flood Watch for McHenry Co., IL until 10:00 AM CDT 8/10
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WGUS63 KLOT 100047
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
747 PM CDT Sat Aug 9 2025
/O.NEW.KLOT.FA.A.0007.250810T0047Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Algonquin, Woodstock, Mundelein, Gurnee,
Belvidere, Crystal Lake, McHenry, Rockford, Buffalo Grove, and
Waukegan
747 PM CDT Sat Aug 9 2025
...FLOOD WATCH IN EFFECT THROUGH SUNDAY MORNING...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Winnebago, Boone, McHenry, and Lake counties in northern
Illinois.
* WHEN...Through Sunday morning.
* IMPACTS...Creeks and streams may rise out of their banks. Roads
and streets may be flooded.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means flooding is possible, but not yet certain, based
upon the latest forecasts. Persons with interests along area rivers,
creeks, and other waterways should monitor the latest forecasts and
be prepared to take action should flooding develop.
&&
https://wxn.io/6nwa7
WGUS63 KLOT 100047
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
747 PM CDT Sat Aug 9 2025
/O.NEW.KLOT.FA.A.0007.250810T0047Z-250810T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Algonquin, Woodstock, Mundelein, Gurnee,
Belvidere, Crystal Lake, McHenry, Rockford, Buffalo Grove, and
Waukegan
747 PM CDT Sat Aug 9 2025
...FLOOD WATCH IN EFFECT THROUGH SUNDAY MORNING...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Winnebago, Boone, McHenry, and Lake counties in northern
Illinois.
* WHEN...Through Sunday morning.
* IMPACTS...Creeks and streams may rise out of their banks. Roads
and streets may be flooded.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means flooding is possible, but not yet certain, based
upon the latest forecasts. Persons with interests along area rivers,
creeks, and other waterways should monitor the latest forecasts and
be prepared to take action should flooding develop.
&&
https://wxn.io/6nwa7
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 092149
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
449 PM CDT Sat Aug 9 2025
McHenry IL-
449 PM CDT Sat Aug 9 2025
...STRONG THUNDERSTORMS WILL IMPACT CENTRAL MCHENRY COUNTY THROUGH
515 PM CDT...
At 449 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hebron to near Woodstock. Movement was
northeast at 25 to 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Greenwood, Hebron, Wonder Lake, Bull Valley, Woodstock, Genoa City,
and McHenry.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4228 8832 4224 8856 4243 8856 4250 8848
4250 8833
TIME...MOT...LOC 2149Z 216DEG 29KT 4243 8850 4226 8850
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/keof3
WWUS83 KLOT 092149
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville
449 PM CDT Sat Aug 9 2025
McHenry IL-
449 PM CDT Sat Aug 9 2025
...STRONG THUNDERSTORMS WILL IMPACT CENTRAL MCHENRY COUNTY THROUGH
515 PM CDT...
At 449 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hebron to near Woodstock. Movement was
northeast at 25 to 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Greenwood, Hebron, Wonder Lake, Bull Valley, Woodstock, Genoa City,
and McHenry.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4228 8832 4224 8856 4243 8856 4250 8848
4250 8833
TIME...MOT...LOC 2149Z 216DEG 29KT 4243 8850 4226 8850
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
https://wxn.io/keof3
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 091127 CCA
HWOLOT
Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
627 AM CDT Sat Aug 9 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
627 AM CDT Sat Aug 9 2025 /727 AM EDT Sat Aug 9 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to one inch in diameter.
Elevated Flooding Risk across northwest Illinois.
Limited Excessive Heat Risk.
DISCUSSION...
Showers and thunderstorms will be possible this afternoon and
evening. The strongest storms may be capable of producing
torrential downpours, damaging wind gusts, and hail. The highest
coverage and greatest severe potential are anticipated near the
I-39 corridor.
Expect uncomfortable heat and humidity today. High temperatures
this afternoon are forecast in the lower 90s and heat indices will
peak around 100 degrees.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Monday through Wednesday...
Limited to Elevated Flooding Risk at times.
Limited Thunderstorm Risk at times.
DISCUSSION...
Hot and humid conditions may continue for portions of the area
on Sunday.
Periodic showers and thunderstorms will move through the general
area next week. Many hours will remain dry, and some areas may be
missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 40 mph.
https://wxn.io/5ylni
FLUS43 KLOT 091127 CCA
HWOLOT
Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
627 AM CDT Sat Aug 9 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
627 AM CDT Sat Aug 9 2025 /727 AM EDT Sat Aug 9 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to one inch in diameter.
Elevated Flooding Risk across northwest Illinois.
Limited Excessive Heat Risk.
DISCUSSION...
Showers and thunderstorms will be possible this afternoon and
evening. The strongest storms may be capable of producing
torrential downpours, damaging wind gusts, and hail. The highest
coverage and greatest severe potential are anticipated near the
I-39 corridor.
Expect uncomfortable heat and humidity today. High temperatures
this afternoon are forecast in the lower 90s and heat indices will
peak around 100 degrees.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Monday through Wednesday...
Limited to Elevated Flooding Risk at times.
Limited Thunderstorm Risk at times.
DISCUSSION...
Hot and humid conditions may continue for portions of the area
on Sunday.
Periodic showers and thunderstorms will move through the general
area next week. Many hours will remain dry, and some areas may be
missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 40 mph.
https://wxn.io/5ylni
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 090913
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
413 AM CDT Sat Aug 9 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
413 AM CDT Sat Aug 9 2025 /513 AM EDT Sat Aug 9 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to one inch in diameter.
Elevated Flooding Risk across northwest Illinois.
Limited Excessive Heat Risk.
DISCUSSION...
Showers and thunderstorms will be possible this afternoon and
evening. The strongest storms may be capable of producing
torrential downpours, damaging wind gusts, and hail. The highest
coverage and greatest severe potential are anticipated near the
I-39 corridor.
Expect uncomfortable heat and humidity today. High temperatures
this afternoon are forecast in the lower 90s and heat indices will
peak around 100 degrees.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Monday through Wednesday...
Elevated Flooding Risk.
Elevated Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions may continue for portions of the area
on Sunday.
Periodic showers and thunderstorms will move through the general
area next week. Many hours will remain dry, and some areas may be
missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 40 mph.
https://wxn.io/ahtg4
FLUS43 KLOT 090913
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
413 AM CDT Sat Aug 9 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
413 AM CDT Sat Aug 9 2025 /513 AM EDT Sat Aug 9 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to one inch in diameter.
Elevated Flooding Risk across northwest Illinois.
Limited Excessive Heat Risk.
DISCUSSION...
Showers and thunderstorms will be possible this afternoon and
evening. The strongest storms may be capable of producing
torrential downpours, damaging wind gusts, and hail. The highest
coverage and greatest severe potential are anticipated near the
I-39 corridor.
Expect uncomfortable heat and humidity today. High temperatures
this afternoon are forecast in the lower 90s and heat indices will
peak around 100 degrees.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Monday through Wednesday...
Elevated Flooding Risk.
Elevated Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions may continue for portions of the area
on Sunday.
Periodic showers and thunderstorms will move through the general
area next week. Many hours will remain dry, and some areas may be
missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 40 mph.
https://wxn.io/ahtg4
Friday, August 8, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 090152
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
852 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
852 PM CDT Fri Aug 8 2025 /952 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk across northwestern
Illinois
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.
Periodic showers and thunderstorms will move through the general
area this weekend and into next week. Many hours will remain dry,
and some areas may be missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/0nc9a
FLUS43 KLOT 090152
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
852 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
852 PM CDT Fri Aug 8 2025 /952 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk across northwestern
Illinois
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.
Periodic showers and thunderstorms will move through the general
area this weekend and into next week. Many hours will remain dry,
and some areas may be missed entirely.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/0nc9a
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 082014
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
314 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
314 PM CDT Fri Aug 8 2025 /414 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Excessive Heat Risk.
DISCUSSION...
Heat indices in the 90s to around 100 degrees before sunset will
only drop to the 80s to around 90 degrees by late this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 1 to 2 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon
and evening for areas primarily near and west of the Fox River
Valley. Some afternoon and evening storms on Saturday and Sunday
could be strong to severe with a threat for locally damaging wind
gusts. In addition, torrential downpours in thunderstorms may
produce localized flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/3lrkg
FLUS43 KLOT 082014
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
314 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
314 PM CDT Fri Aug 8 2025 /414 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Excessive Heat Risk.
DISCUSSION...
Heat indices in the 90s to around 100 degrees before sunset will
only drop to the 80s to around 90 degrees by late this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 1 to 2 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon
and evening for areas primarily near and west of the Fox River
Valley. Some afternoon and evening storms on Saturday and Sunday
could be strong to severe with a threat for locally damaging wind
gusts. In addition, torrential downpours in thunderstorms may
produce localized flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/3lrkg
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 081718
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1218 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1218 PM CDT Fri Aug 8 2025 /118 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Excessive Heat Risk this afternoon.
DISCUSSION...
Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions will continue Saturday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/lktuq
FLUS43 KLOT 081718
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1218 PM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1218 PM CDT Fri Aug 8 2025 /118 PM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Excessive Heat Risk this afternoon.
DISCUSSION...
Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions will continue Saturday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/lktuq
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 080843
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
343 AM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
343 AM CDT Fri Aug 8 2025 /443 AM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Excessive Heat Risk this afternoon.
DISCUSSION...
Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions will continue Saturday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/h27c5
FLUS43 KLOT 080843
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
343 AM CDT Fri Aug 8 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
343 AM CDT Fri Aug 8 2025 /443 AM EDT Fri Aug 8 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Excessive Heat Risk this afternoon.
DISCUSSION...
Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions will continue Saturday.
Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/h27c5
Thursday, August 7, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 072328
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
628 PM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
628 PM CDT Thu Aug 7 2025 /728 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of a thunderstorm this evening and
overnight. Most areas will stay dry.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.
Additional periods of thunderstorms are possible late day
Saturday through mid next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/dr13m
FLUS43 KLOT 072328
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
628 PM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
628 PM CDT Thu Aug 7 2025 /728 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of a thunderstorm this evening and
overnight. Most areas will stay dry.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.
Additional periods of thunderstorms are possible late day
Saturday through mid next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/dr13m
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 072015
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
315 PM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
315 PM CDT Thu Aug 7 2025 /415 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
There is a slight chance of thunderstorms this evening and
overnight. Any storms that develop will be capable of gusty winds
and torrential rainfall leading to localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.
Additional periods of thunderstorms are possible late day Saturday
through mid next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is unlikely through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/1r1cy
FLUS43 KLOT 072015
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
315 PM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
315 PM CDT Thu Aug 7 2025 /415 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
Limited Flooding Risk.
DISCUSSION...
There is a slight chance of thunderstorms this evening and
overnight. Any storms that develop will be capable of gusty winds
and torrential rainfall leading to localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.
Additional periods of thunderstorms are possible late day Saturday
through mid next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is unlikely through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/1r1cy
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 071617
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1117 AM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1117 AM CDT Thu Aug 7 2025 /1217 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Limited Flooding Risk.
DISCUSSION...
There is a slight chance of thunderstorms this afternoon into
early this evening with a somewhat greater potential for storms
later this evening and overnight. Any storms that develop will be
capable of gusty to locally damaging winds and torrential rainfall
leading to localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Excessive Heat Risk.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/i932h
FLUS43 KLOT 071617
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1117 AM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1117 AM CDT Thu Aug 7 2025 /1217 PM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Limited Flooding Risk.
DISCUSSION...
There is a slight chance of thunderstorms this afternoon into
early this evening with a somewhat greater potential for storms
later this evening and overnight. Any storms that develop will be
capable of gusty to locally damaging winds and torrential rainfall
leading to localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Excessive Heat Risk.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/i932h
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 070928
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
428 AM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
428 AM CDT Thu Aug 7 2025 /528 AM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Limited Flooding Risk.
DISCUSSION...
Isolated storms may develop late this morning through the
afternoon with a greater potential for storms this evening and
overnight. Any storms that develop will be capable of gusty to
locally damaging winds and torrential rainfall leading to
localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Excessive Heat Risk.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/a1z1p
FLUS43 KLOT 070928
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
428 AM CDT Thu Aug 7 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
428 AM CDT Thu Aug 7 2025 /528 AM EDT Thu Aug 7 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Limited Flooding Risk.
DISCUSSION...
Isolated storms may develop late this morning through the
afternoon with a greater potential for storms this evening and
overnight. Any storms that develop will be capable of gusty to
locally damaging winds and torrential rainfall leading to
localized flooding.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday Morning...
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Excessive Heat Risk.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast around 20 mph.
https://wxn.io/a1z1p
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 070510
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1210 AM CDT Thu Aug 7 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1210 AM CDT Thu Aug 7 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Thursday August 7th for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/am205
AEUS73 KLOT 070510
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1210 AM CDT Thu Aug 7 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1210 AM CDT Thu Aug 7 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Thursday August 7th for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/am205
Wednesday, August 6, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 062011
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
311 PM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
311 PM CDT Wed Aug 6 2025 /411 PM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Thursday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Friday and Saturday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
Sunday Through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated to widely scattered thunderstorms are possible Thursday
afternoon through Thursday night. While widespread severe weather
is not expected a few storms could produce locally gusty winds.
Very warm and humid conditions are expected Friday through
Saturday with peak heat indices around 100F likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/dq598
FLUS43 KLOT 062011
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
311 PM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
311 PM CDT Wed Aug 6 2025 /411 PM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Thursday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Friday and Saturday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
Sunday Through Tuesday...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated to widely scattered thunderstorms are possible Thursday
afternoon through Thursday night. While widespread severe weather
is not expected a few storms could produce locally gusty winds.
Very warm and humid conditions are expected Friday through
Saturday with peak heat indices around 100F likely.
Additional periods of thunderstorms are possible Saturday night
through early next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/dq598
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 061935
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
235 PM CDT Wed Aug 6 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
235 PM CDT Wed Aug 6 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT THURSDAY NIGHT...
The Illinois Environmental Protection Agency has determined that the
Air Pollution Action Day designation will remain in effect for the
greater Chicago Metropolitan Area through Thursday night August 7th.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/3ump3
AEUS73 KLOT 061935
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
235 PM CDT Wed Aug 6 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
235 PM CDT Wed Aug 6 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT THURSDAY NIGHT...
The Illinois Environmental Protection Agency has determined that the
Air Pollution Action Day designation will remain in effect for the
greater Chicago Metropolitan Area through Thursday night August 7th.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/3ump3
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 061609
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1109 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1109 AM CDT Wed Aug 6 2025 /1209 PM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/ofn4c
FLUS43 KLOT 061609
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1109 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1109 AM CDT Wed Aug 6 2025 /1209 PM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/ofn4c
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 060928 AAA
HWOLOT
Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
428 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
428 AM CDT Wed Aug 6 2025 /528 AM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Fog Risk early this morning.
DISCUSSION...
Patchy shallow fog is expected early this morning, some of which
may become locally dense, especially near river valleys and other
low-lying areas.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/hyaxu
FLUS43 KLOT 060928 AAA
HWOLOT
Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
428 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
428 AM CDT Wed Aug 6 2025 /528 AM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Fog Risk early this morning.
DISCUSSION...
Patchy shallow fog is expected early this morning, some of which
may become locally dense, especially near river valleys and other
low-lying areas.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/hyaxu
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 060905
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
405 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
405 AM CDT Wed Aug 6 2025 /505 AM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday Night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/m76hx
FLUS43 KLOT 060905
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
405 AM CDT Wed Aug 6 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
405 AM CDT Wed Aug 6 2025 /505 AM EDT Wed Aug 6 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Saturday Night through Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/m76hx
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 060547
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1247 AM CDT Wed Aug 6 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1247 AM CDT Wed Aug 6 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Wednesday August 6th for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern, but
wildfire smoke is also lingering in the region and may impact PM2.5
and Ozone AQI.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/jjt15
AEUS73 KLOT 060547
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1247 AM CDT Wed Aug 6 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1247 AM CDT Wed Aug 6 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Wednesday August 6th for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern, but
wildfire smoke is also lingering in the region and may impact PM2.5
and Ozone AQI.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/jjt15
Tuesday, August 5, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 060159
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
859 PM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
859 PM CDT Tue Aug 5 2025 /959 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thursday...
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/9iyxw
FLUS43 KLOT 060159
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
859 PM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
859 PM CDT Tue Aug 5 2025 /959 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thursday...
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/9iyxw
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 051949
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
249 PM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
249 PM CDT Tue Aug 5 2025 /349 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk early this evening south of US 24.
DISCUSSION...
An isolated thunderstorm or two is possible late this afternoon
into early this evening south of US 24. Primary hazards include
lightning strikes and localized heavy downpours.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thursday...
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Nearly stationary or moving northwest at 5 to 10 mph.
https://wxn.io/squ39
FLUS43 KLOT 051949
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
249 PM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
249 PM CDT Tue Aug 5 2025 /349 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk early this evening south of US 24.
DISCUSSION...
An isolated thunderstorm or two is possible late this afternoon
into early this evening south of US 24. Primary hazards include
lightning strikes and localized heavy downpours.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thursday...
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Nearly stationary or moving northwest at 5 to 10 mph.
https://wxn.io/squ39
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 051656
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1156 AM CDT Tue Aug 5 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1156 AM CDT Tue Aug 5 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY NIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Wednesday August 6th for the greater Chicago
Metropolitan Area through Midnight Wednesday night.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern, but
wildfire smoke also is lingering in the region and may impact PM2.5
and Ozone AQI
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/1tz7k
AEUS73 KLOT 051656
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1156 AM CDT Tue Aug 5 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1156 AM CDT Tue Aug 5 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY NIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Wednesday August 6th for the greater Chicago
Metropolitan Area through Midnight Wednesday night.
A Chicago area Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern, but
wildfire smoke also is lingering in the region and may impact PM2.5
and Ozone AQI
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/1tz7k
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 051604 AAA
HWOLOT
Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
1104 AM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1104 AM CDT Tue Aug 5 2025 /1204 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated thunderstorms may develop this afternoon generally east
of Interstate 55 and along and south of the Kankakee River Valley,
or roughly near and south of a Pontiac, Illinois to Rensselaer,
Indiana line. Primary hazards include lightning strikes and
localized heavy downpours.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Nearly stationary to northwest around 5 to 10 mph.
https://wxn.io/gehu3
FLUS43 KLOT 051604 AAA
HWOLOT
Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
1104 AM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1104 AM CDT Tue Aug 5 2025 /1204 PM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated thunderstorms may develop this afternoon generally east
of Interstate 55 and along and south of the Kankakee River Valley,
or roughly near and south of a Pontiac, Illinois to Rensselaer,
Indiana line. Primary hazards include lightning strikes and
localized heavy downpours.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Nearly stationary to northwest around 5 to 10 mph.
https://wxn.io/gehu3
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 050809
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
309 AM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
309 AM CDT Tue Aug 5 2025 /409 AM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated thunderstorms may develop this afternoon near and south
of a Pontiac, Illinois to Rensselaer, Indiana line. Primary
hazards include lightning strikes and localized heavy downpours.
While a few funnel clouds may be sighted, severe weather is not
expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Near stationary to northwest around 5 to 10 mph.
https://wxn.io/q21rr
FLUS43 KLOT 050809
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
309 AM CDT Tue Aug 5 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
309 AM CDT Tue Aug 5 2025 /409 AM EDT Tue Aug 5 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated thunderstorms may develop this afternoon near and south
of a Pontiac, Illinois to Rensselaer, Indiana line. Primary
hazards include lightning strikes and localized heavy downpours.
While a few funnel clouds may be sighted, severe weather is not
expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Near stationary to northwest around 5 to 10 mph.
https://wxn.io/q21rr
Monday, August 4, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 050200
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
900 PM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
900 PM CDT Mon Aug 4 2025 /1000 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
Saturday Night and Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/bq793
FLUS43 KLOT 050200
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
900 PM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
900 PM CDT Mon Aug 4 2025 /1000 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
Saturday Night and Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/bq793
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 041947
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
247 PM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
247 PM CDT Mon Aug 4 2025 /347 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of thunderstorms this afternoon,
south of a Streator, Illinois to Fowler, Indiana line. While a
few funnel clouds may be sighted, severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
Saturday Night and Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 10 to 15 mph.
https://wxn.io/7uts3
FLUS43 KLOT 041947
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
247 PM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
247 PM CDT Mon Aug 4 2025 /347 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of thunderstorms this afternoon,
south of a Streator, Illinois to Fowler, Indiana line. While a
few funnel clouds may be sighted, severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
Saturday Night and Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 10 to 15 mph.
https://wxn.io/7uts3
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 041644
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1144 AM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1144 AM CDT Mon Aug 4 2025 /1244 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of showers and thunderstorms this
afternoon, mainly south of a Streator, Illinois to Fowler,
Indiana line. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 10 mph.
https://wxn.io/sjhbr
FLUS43 KLOT 041644
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1144 AM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1144 AM CDT Mon Aug 4 2025 /1244 PM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
There is a 20 percent chance of showers and thunderstorms this
afternoon, mainly south of a Streator, Illinois to Fowler,
Indiana line. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 10 mph.
https://wxn.io/sjhbr
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 040859
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
359 AM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
359 AM CDT Mon Aug 4 2025 /459 AM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk in the afternoon.
DISCUSSION...
There is a 20 percent chance of showers and thunderstorms this
afternoon, mainly south of a Streator, Illinois to Fowler,
Indiana line. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 15 to 20 mph.
https://wxn.io/hz6hj
FLUS43 KLOT 040859
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
359 AM CDT Mon Aug 4 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
359 AM CDT Mon Aug 4 2025 /459 AM EDT Mon Aug 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk in the afternoon.
DISCUSSION...
There is a 20 percent chance of showers and thunderstorms this
afternoon, mainly south of a Streator, Illinois to Fowler,
Indiana line. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at 15 to 20 mph.
https://wxn.io/hz6hj
Sunday, August 3, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 031949
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
249 PM CDT Sun Aug 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
249 PM CDT Sun Aug 3 2025 /349 PM EDT Sun Aug 3 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/3sg90
FLUS43 KLOT 031949
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
249 PM CDT Sun Aug 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
249 PM CDT Sun Aug 3 2025 /349 PM EDT Sun Aug 3 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/3sg90
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 030846
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
346 AM CDT Sun Aug 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
346 AM CDT Sun Aug 3 2025 /446 AM EDT Sun Aug 3 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/zoy6h
FLUS43 KLOT 030846
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
346 AM CDT Sun Aug 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
346 AM CDT Sun Aug 3 2025 /446 AM EDT Sun Aug 3 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/zoy6h
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 030505
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1205 AM CDT Sun Aug 3 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1205 AM CDT Sun Aug 3 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the greater
Chicago Metropolitan Area through midnight tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/3n772
AEUS73 KLOT 030505
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1205 AM CDT Sun Aug 3 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1205 AM CDT Sun Aug 3 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the greater
Chicago Metropolitan Area through midnight tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/3n772
Saturday, August 2, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 022014
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
314 PM CDT Sat Aug 2 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
314 PM CDT Sat Aug 2 2025 /414 PM EDT Sat Aug 2 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/h7zx6
FLUS43 KLOT 022014
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
314 PM CDT Sat Aug 2 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
314 PM CDT Sat Aug 2 2025 /414 PM EDT Sat Aug 2 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Tuesday Afternoon...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/h7zx6
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 021812
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
112 PM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
112 PM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT NOW THROUGH SUNDAY NIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through Sunday night, August 3rd.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/exfmj
AEUS73 KLOT 021812
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
112 PM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
112 PM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT NOW THROUGH SUNDAY NIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through Sunday night, August 3rd.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/exfmj
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 021743
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1243 PM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1243 PM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/jypwr
AEUS73 KLOT 021743
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1243 PM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1243 PM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/jypwr
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 020900
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
400 AM CDT Sat Aug 2 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
400 AM CDT Sat Aug 2 2025 /500 AM EDT Sat Aug 2 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/n0jme
FLUS43 KLOT 020900
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
400 AM CDT Sat Aug 2 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
400 AM CDT Sat Aug 2 2025 /500 AM EDT Sat Aug 2 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/n0jme
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 020505
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1205 AM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1205 AM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/wo1xx
AEUS73 KLOT 020505
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1205 AM CDT Sat Aug 2 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1205 AM CDT Sat Aug 2 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
"Air Pollution Action Day" will remain in effect for the
greater Chicago metropolitan area through tonight.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/wo1xx
Friday, August 1, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 011902
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
202 PM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
202 PM CDT Fri Aug 1 2025 /302 PM EDT Fri Aug 1 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/0reyi
FLUS43 KLOT 011902
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
202 PM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
202 PM CDT Fri Aug 1 2025 /302 PM EDT Fri Aug 1 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
No hazardous weather is expected at this time.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/0reyi
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 011853
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
153 PM CDT Fri Aug 1 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
153 PM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT SATURDAY NIGHT...
The Illinois Environmental Protection Agency has determined that the
"Air Pollution Action Day" designation will remain in effect for the
greater Chicago metropolitan area through Saturday night, August
2nd.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particular levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the air quality index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/akbck
AEUS73 KLOT 011853
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
153 PM CDT Fri Aug 1 2025
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
153 PM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT SATURDAY NIGHT...
The Illinois Environmental Protection Agency has determined that the
"Air Pollution Action Day" designation will remain in effect for the
greater Chicago metropolitan area through Saturday night, August
2nd.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particular levels
are expected to be at or above the Unhealthy for Sensitive Groups
category of the air quality index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/akbck
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 011802
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
102 PM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
102 PM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
Air Pollution Action Day will be declared for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
An Air Pollution Action Day is declared when weather conditions are
such that widespread ozone and or particulate levels are expected to
be at or above the Unhealthy for Sensitive Groups category of the
Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/i3vuw
AEUS73 KLOT 011802
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
102 PM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
102 PM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has determined that an
Air Pollution Action Day will be declared for the greater Chicago
Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.
An Air Pollution Action Day is declared when weather conditions are
such that widespread ozone and or particulate levels are expected to
be at or above the Unhealthy for Sensitive Groups category of the
Air Quality Index for multiple days.
Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.
Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.
Media contact...Illinois EPA.
https://wxn.io/i3vuw
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 011331
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
831 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
831 AM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Friday August 1st for all of Illinois due
to wildfire smoke.
An Illinois "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index for all or almost all of
Illinois.
USG - Active children and adults, especially people with pulmonary
or respiratory disease such as asthma, should limit prolonged outdoor
activity.
Unhealthy - Everyone should reduce prolonged activities or heavy
exertion outdoors.
Area residents are urged to reduce pollution levels. Air quality
forecasts, AQI cautionary statements, current air quality, ...
https://wxn.io/mqt3o
AEUS73 KLOT 011331
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
831 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
831 AM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Friday August 1st for all of Illinois due
to wildfire smoke.
An Illinois "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index for all or almost all of
Illinois.
USG - Active children and adults, especially people with pulmonary
or respiratory disease such as asthma, should limit prolonged outdoor
activity.
Unhealthy - Everyone should reduce prolonged activities or heavy
exertion outdoors.
Area residents are urged to reduce pollution levels. Air quality
forecasts, AQI cautionary statements, current air quality, ...
https://wxn.io/mqt3o
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 010853
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
353 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
353 AM CDT Fri Aug 1 2025 /453 AM EDT Fri Aug 1 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
High Swim Risk Lake Michigan Beaches.
DISCUSSION...
Breezy northeast winds will maintain choppy waves and rip
currents leading to a High Swim Risk along Lake Michigan beaches.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/p3j48
FLUS43 KLOT 010853
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
353 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
353 AM CDT Fri Aug 1 2025 /453 AM EDT Fri Aug 1 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
High Swim Risk Lake Michigan Beaches.
DISCUSSION...
Breezy northeast winds will maintain choppy waves and rip
currents leading to a High Swim Risk along Lake Michigan beaches.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Tuesday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/p3j48
Air Quality Alert for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
AEUS73 KLOT 010503
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1203 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
1203 AM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Friday August 1st for all of Illinois due
to wildfire smoke.
An Illinois "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index for all or almost all of
Illinois.
USG - Active children and adults, especially people with pulmonary
or respiratory disease such as asthma, should limit prolonged outdoor
activity.
Unhealthy - Everyone should reduce prolonged activities or heavy
exertion outdoors.
Area residents are urged to reduce pollution levels. Air quality
forecasts, AQI cautionary statements, current air quality,...
https://wxn.io/amkh6
AEUS73 KLOT 010503
AQALOT
Air Quality Alert Message
Relayed by National Weather Service Chicago IL
1203 AM CDT Fri Aug 1 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein,
Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville,
Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley,
Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest,
Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield,
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone,
and Beecher
1203 AM CDT Fri Aug 1 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Friday August 1st for all of Illinois due
to wildfire smoke.
An Illinois "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) category of the Air Quality Index for all or almost all of
Illinois.
USG - Active children and adults, especially people with pulmonary
or respiratory disease such as asthma, should limit prolonged outdoor
activity.
Unhealthy - Everyone should reduce prolonged activities or heavy
exertion outdoors.
Area residents are urged to reduce pollution levels. Air quality
forecasts, AQI cautionary statements, current air quality,...
https://wxn.io/amkh6
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