C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS43 KLOT 050818
WSWLOT
URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
218 AM CST Wed Feb 5 2025
/O.EXT.KLOT.WW.Y.0002.250206T0000Z-250206T1200Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
Northern Cook-Central Cook-
Including the cities of Cicero, La Grange, Naperville, Carol
Stream, Sycamore, Dixon, DeKalb, Northbrook, Belvidere, Elgin,
McHenry, Oak Park, Crystal Lake, Lombard, Byron, Algonquin,
Wheaton, Gurnee, Buffalo Grove, Waukegan, Downers Grove, Des
Plaines, Schaumburg, Evanston, Oak Lawn, Rochelle, Woodstock,
Rockford, Palatine, Oregon, Mundelein, Chicago, and Aurora
218 AM CST Wed Feb 5 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO 6
AM CST THURSDAY...
* WHAT...Freezing rain and freezing drizzle expected. Total ice
accumulations up to one tenth of an inch.
* WHERE...Portions of north central and northeast Illinois.
* WHEN...From 6 PM this evening to 6 AM CST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions this evening.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. Prepare for possible
power outages. The latest road conditions for Illinois can be
obtained at www.gettingaroundillinois.com. The latest road
conditions for Indiana can be obtained at https://511in.org.
&&
https://wxn.io/ilfzr
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
Wednesday, February 5, 2025
Tuesday, February 4, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 042051
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
251 PM CST Tue Feb 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-
251 PM CST Tue Feb 4 2025 /351 PM EST Tue Feb 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...Wednesday through Monday.
Wednesday afternoon and night...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Friday night into and Saturday...
Limited Ice and Snow Accumulation Risk.
DISCUSSION...
A wintry mix will overspread the region tomorrow evening. Ice
accumulations of a glaze to locally two tenths of an inch are
expected with the highest values along and south of Interstate 80.
In addition, a lightning strike or two cannot be ruled out.
Another period of a wintry mix may occur Friday night into
Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/hfwfm
FLUS43 KLOT 042051
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
251 PM CST Tue Feb 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-
251 PM CST Tue Feb 4 2025 /351 PM EST Tue Feb 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...Wednesday through Monday.
Wednesday afternoon and night...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Friday night into and Saturday...
Limited Ice and Snow Accumulation Risk.
DISCUSSION...
A wintry mix will overspread the region tomorrow evening. Ice
accumulations of a glaze to locally two tenths of an inch are
expected with the highest values along and south of Interstate 80.
In addition, a lightning strike or two cannot be ruled out.
Another period of a wintry mix may occur Friday night into
Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/hfwfm
Winter Weather Advisory for McHenry Co., IL until 6:00 AM CST 2/6
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS43 KLOT 042021
WSWLOT
URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
221 PM CST Tue Feb 4 2025
/O.NEW.KLOT.WW.Y.0002.250205T2100Z-250206T1200Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
Northern Cook-Central Cook-
Including the cities of Chicago, Rockford, Oak Park, Dixon,
Crystal Lake, Lombard, Gurnee, Naperville, Wheaton, Woodstock,
Oregon, Algonquin, Oak Lawn, McHenry, Northbrook, Aurora,
Palatine, DeKalb, Downers Grove, La Grange, Carol Stream,
Waukegan, Byron, Cicero, Elgin, Des Plaines, Rochelle, Evanston,
Sycamore, Buffalo Grove, Schaumburg, Mundelein, and Belvidere
221 PM CST Tue Feb 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM WEDNESDAY TO 6 AM CST
THURSDAY...
* WHAT...Mixed precipitation, including freezing rain expected.
Total snow and sleet accumulations up to one inch and ice
accumulations of a glaze up to one tenth of an inch are expected.
* WHERE...Portions of north central and northeast Illinois.
* WHEN...From 3 PM Wednesday to 6 AM CST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions, including during the Wednesday evening commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for Illinois can be obtained at
www.gettingaroundillinois.com.
&&
https://wxn.io/19hzp
WWUS43 KLOT 042021
WSWLOT
URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
221 PM CST Tue Feb 4 2025
/O.NEW.KLOT.WW.Y.0002.250205T2100Z-250206T1200Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
Northern Cook-Central Cook-
Including the cities of Chicago, Rockford, Oak Park, Dixon,
Crystal Lake, Lombard, Gurnee, Naperville, Wheaton, Woodstock,
Oregon, Algonquin, Oak Lawn, McHenry, Northbrook, Aurora,
Palatine, DeKalb, Downers Grove, La Grange, Carol Stream,
Waukegan, Byron, Cicero, Elgin, Des Plaines, Rochelle, Evanston,
Sycamore, Buffalo Grove, Schaumburg, Mundelein, and Belvidere
221 PM CST Tue Feb 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM WEDNESDAY TO 6 AM CST
THURSDAY...
* WHAT...Mixed precipitation, including freezing rain expected.
Total snow and sleet accumulations up to one inch and ice
accumulations of a glaze up to one tenth of an inch are expected.
* WHERE...Portions of north central and northeast Illinois.
* WHEN...From 3 PM Wednesday to 6 AM CST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions, including during the Wednesday evening commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for Illinois can be obtained at
www.gettingaroundillinois.com.
&&
https://wxn.io/19hzp
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 041007
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
407 AM CST Tue Feb 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-
407 AM CST Tue Feb 4 2025 /507 AM EST Tue Feb 4 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...Wednesday through Monday.
Wednesday...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Limited Snow and Sleet Risk.
Friday night and Saturday...
Limited Snow and Sleet Risk.
DISCUSSION...
Chances continue to increase for a storm system to impact the region
late Wednesday through Wednesday night. The potential exists for
a wintry mix of snow, sleet, and freezing rain to change to
primarily freezing rain Wednesday afternoon and evening. If this
occurs, impactful ice accumulations will be possible.
Another period of notable wintry precipitation is possible Friday
night through Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/lsbe6
FLUS43 KLOT 041007
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
407 AM CST Tue Feb 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-
407 AM CST Tue Feb 4 2025 /507 AM EST Tue Feb 4 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...Wednesday through Monday.
Wednesday...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Limited Snow and Sleet Risk.
Friday night and Saturday...
Limited Snow and Sleet Risk.
DISCUSSION...
Chances continue to increase for a storm system to impact the region
late Wednesday through Wednesday night. The potential exists for
a wintry mix of snow, sleet, and freezing rain to change to
primarily freezing rain Wednesday afternoon and evening. If this
occurs, impactful ice accumulations will be possible.
Another period of notable wintry precipitation is possible Friday
night through Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/lsbe6
Monday, February 3, 2025
Hazardous Weather Outlook for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
FLUS43 KLOT 032044
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
244 PM CST Mon Feb 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-
244 PM CST Mon Feb 3 2025 /344 PM EST Mon Feb 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...Tuesday through Sunday.
Wednesday and Wednesday Night...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Limited Snow and Sleet Risk.
Friday Night and Saturday...
Limited Snow and Sleet Risk.
DISCUSSION...
Chances are increasing for a storm system to impact the region on
Wednesday through Wednesday night. The potential exists for a
wintry mix of snow, sleet, and freezing rain to change to
primarily freezing rain Wednesday afternoon and evening. If this
occurs, impactful ice accumulations will be possible.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/dsm25
FLUS43 KLOT 032044
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
244 PM CST Mon Feb 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-
244 PM CST Mon Feb 3 2025 /344 PM EST Mon Feb 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...Tuesday through Sunday.
Wednesday and Wednesday Night...
Elevated Ice Accumulation Risk.
Limited Thunderstorm Risk.
Limited Snow and Sleet Risk.
Friday Night and Saturday...
Limited Snow and Sleet Risk.
DISCUSSION...
Chances are increasing for a storm system to impact the region on
Wednesday through Wednesday night. The potential exists for a
wintry mix of snow, sleet, and freezing rain to change to
primarily freezing rain Wednesday afternoon and evening. If this
occurs, impactful ice accumulations will be possible.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
https://wxn.io/dsm25
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 031500
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville IL
900 AM CST Mon Feb 3 2025
Winnebago-Boone-McHenry-Lake IL-Kane-Northern Cook-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove,
Mundelein, Gurnee, Aurora, Elgin, Evanston, Des Plaines,
Schaumburg, Palatine, and Northbrook
900 AM CST Mon Feb 3 2025
...Patchy Dense Fog This Morning...
Patchy dense fog with visibility of 1/2 mile or less persists
this morning across portions of far northern Illinois. Expect to
encounter sharply reduced visibility and rapid changes in
visibility when driving in and out of this patchy dense fog. The
foggy conditions should improve by the end of the morning.
Motorists are advised to leave extra travel time and to reduce
speed, use low beams, and increase following distance when driving
in dense fog.
https://wxn.io/m6slv
WWUS83 KLOT 031500
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville IL
900 AM CST Mon Feb 3 2025
Winnebago-Boone-McHenry-Lake IL-Kane-Northern Cook-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove,
Mundelein, Gurnee, Aurora, Elgin, Evanston, Des Plaines,
Schaumburg, Palatine, and Northbrook
900 AM CST Mon Feb 3 2025
...Patchy Dense Fog This Morning...
Patchy dense fog with visibility of 1/2 mile or less persists
this morning across portions of far northern Illinois. Expect to
encounter sharply reduced visibility and rapid changes in
visibility when driving in and out of this patchy dense fog. The
foggy conditions should improve by the end of the morning.
Motorists are advised to leave extra travel time and to reduce
speed, use low beams, and increase following distance when driving
in dense fog.
https://wxn.io/m6slv
Special Weather Statement for McHenry Co., IL
C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX
WWUS83 KLOT 031102
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville IL
502 AM CST Mon Feb 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-De Kalb-Kane-DuPage-Kendall-
Northern Cook-Northern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove,
Mundelein, Gurnee, Rochelle, Oregon, Byron, DeKalb, Sycamore,
Aurora, Elgin, Naperville, Wheaton, Downers Grove, Lombard,
Carol Stream, Oswego, Yorkville, Plano, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Joliet, Bolingbrook,
Plainfield, and Mokena
502 AM CST Mon Feb 3 2025
...Patchy Dense Fog This Morning...
Patchy dense fog with visibility of 1/4 mile or less has
developed across portions of interior northern Illinois. Expect to
encounter sharply reduced visibility and rapidly changing visibility
when driving in and out of this patchy dense fog. The foggy conditions
should start to improve by the mid morning. Motorists are advised
to leave extra travel time, and to reduce speed, use low beams,
and increase following distance when driving in dense fog.
https://wxn.io/ut0js
WWUS83 KLOT 031102
SPSLOT
Special Weather Statement
National Weather Service Chicago/Romeoville IL
502 AM CST Mon Feb 3 2025
Winnebago-Boone-McHenry-Lake IL-Ogle-De Kalb-Kane-DuPage-Kendall-
Northern Cook-Northern Will-
Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove,
Mundelein, Gurnee, Rochelle, Oregon, Byron, DeKalb, Sycamore,
Aurora, Elgin, Naperville, Wheaton, Downers Grove, Lombard,
Carol Stream, Oswego, Yorkville, Plano, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Joliet, Bolingbrook,
Plainfield, and Mokena
502 AM CST Mon Feb 3 2025
...Patchy Dense Fog This Morning...
Patchy dense fog with visibility of 1/4 mile or less has
developed across portions of interior northern Illinois. Expect to
encounter sharply reduced visibility and rapidly changing visibility
when driving in and out of this patchy dense fog. The foggy conditions
should start to improve by the mid morning. Motorists are advised
to leave extra travel time, and to reduce speed, use low beams,
and increase following distance when driving in dense fog.
https://wxn.io/ut0js
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