Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 312015 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 315 PM CDT Fri Aug 31 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 315 PM CDT Fri Aug 31 2018 /415 PM EDT Fri Aug 31 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

Elevated Thunderstorm Risk...with an associated:     Limited hail risk...up to quarter size.     Limited damaging wind risk...up to 60 mph.  Elevated Flooding Risk.

DISCUSSION…

Thunderstorms chances will increase late tonight into the predawn hours Saturday near the I-39 corridor. Damaging winds and hail will be the main threat with thunderstorms overnight, mainly west of a line from Sublette through Woodstock. In addition, heavy rainfall may occur in some of the storms and could lead to localized flooding.

.DAYS TWO THROUGH SEVEN…Saturday through Thursday.

Saturday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.  Limited Excessive Heat Risk.

Sunday…

Limited Severe Thunderstorm Risk.  Limited Flooding Risk.  Limited Excessive Heat Risk.

Monday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday through Thursday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

DISCUSSION:

A period of unsettled weather is setting up for the weekend and into next week. Warm and humid conditions are expected with periodic chances for thunderstorms. For the weekend, there is a chance that some of the stronger storms may be severe, with strong winds and large hail being the primary severe threats.

Also, heavy rainfall may occur in some of the storms and could lead to localized flooding on Saturday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 311712 CCA HWOLOT

Hazardous Weather Outlook…CORRECTED National Weather Service Chicago/Romeoville IL 1212 PM CDT Fri Aug 31 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1212 PM CDT Fri Aug 31 2018 /112 PM EDT Fri Aug 31 2018/

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…

Elevated Thunderstorm Risk...with an associated:     Limited hail risk...up to quarter size.     Limited damaging wind risk...up to 60 mph.  Elevated Flooding Risk.

DISCUSSION…

An isolated thunderstorm or two is possible this afternoon and evening, but the greatest chance for thunderstorms will be late tonight into the predawn hours Saturday. Damaging winds and hail will be the main threat with thunderstorms overnight, mainly west of a line from Sublette through Woodstock. In addition, heavy rainfall may occur in some of the storms and could lead to localized flooding.

.DAYS TWO THROUGH SEVEN…Saturday through Thursday.

Saturday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.

Sunday…

Limited Severe Thunderstorm Risk.  Limited Flooding Risk.

Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Thursday…

Limited Thunderstorm Risk.

DISCUSSION:

A period of unsettled weather is setting up for the weekend and into next week. Warm and humid conditions are expected with periodic chances for thunderstorms. For the weekend, there is a chance that some of the stronger storms may be severe, with strong winds and large hail being the primary severe threats.

Also, locally rainfall may occur in some of the storms and could lead to flooding on Saturday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed overnight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 311648 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1148 AM CDT Fri Aug 31 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1148 AM CDT Fri Aug 31 2018 /1248 PM EDT Fri Aug 31 2018/

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…

Elevated Thunderstorm Risk...with an associated:     Limited damaging wind risk...up to 60 mph.  Elevated Flooding Risk.

DISCUSSION…

An isolated thunderstorm or two is possible this afternoon and evening, but the greatest chance for thunderstorms will be late tonight into the predawn hours Saturday. Damaging winds will be the main threat with thunderstorms overnight, mainly west of a line from Sublette through Woodstock. In addition, heavy rainfall may occur in some of the storms and could lead to localized flooding.

.DAYS TWO THROUGH SEVEN…Saturday through Thursday.

Saturday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.

Sunday…

Limited Severe Thunderstorm Risk.  Limited Flooding Risk.

Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Thursday…

Limited Thunderstorm Risk.

DISCUSSION:

A period of unsettled weather is setting up for the weekend and into next week. Warm and humid conditions are expected with periodic chances for thunderstorms. For the weekend, there is a chance that some of the stronger storms may be severe, with strong winds and large hail being the primary severe threats.

Also, locally rainfall may occur in some of the storms and could lead to flooding on Saturday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed overnight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 311021 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 521 AM CDT Fri Aug 31 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 521 AM CDT Fri Aug 31 2018 /621 AM EDT Fri Aug 31 2018/

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:     Limited hail risk...up to quarter size.     Limited damaging wind risk...up to 60 mph.  Limited Flood Risk.

DISCUSSION…

There will be increasing chances for thunderstorms through the day and into tonight. The greatest severe threat will be late tonight with large hail and strong, damaging winds possible. Also, locally rainfall may occur in some of the storms and could lead to flooding, especially for areas north and west of a line from Waukegan to Peru in northern Illinois.

.DAYS TWO THROUGH SEVEN…Saturday through Thursday.

Saturday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.

Sunday…

Limited Severe Thunderstorm Risk.

Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Thursday…

Limited Thunderstorm Risk.

DISCUSSION:

A period of unsettled weather is setting up for the weekend and into next week. Warm and humid conditions are expected with periodic chances for thunderstorms. For the weekend, there is a chance that some of the stronger storms may be severe, with strong winds and large hail being the primary severe threats.

Also, locally rainfall may occur in some of the storms and could lead to flooding on Saturday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 302025 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 325 PM CDT Thu Aug 30 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 325 PM CDT Thu Aug 30 2018 /425 PM EDT Thu Aug 30 2018/

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…

Thunderstorms are expected to increase in coverage across Iowa overnight. Some of these storms may persist into portions of north central Illinois very late tonight, mainly for locations near and west of I-39. Severe thunderstorms are not expected.

.DAYS TWO THROUGH SEVEN…Friday through Wednesday.

Friday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.

Saturday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.  Limited Excessive Heat Risk.

Sunday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.

Monday through Wednesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

DISCUSSION:

Expect warm and very humid conditions through early next week along with periodic chances for thunderstorms, some of which may be severe Friday and Saturday.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 301719 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1219 PM CDT Thu Aug 30 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1219 PM CDT Thu Aug 30 2018 /119 PM EDT Thu Aug 30 2018/

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 very late tonight mainly near the I-39  corridor.

DISCUSSION…

A complex of storms may sneak into locations west of I-39 late tonight, though it more likely will hold off until Friday morning. Severe thunderstorms are not expected.

.DAYS TWO THROUGH SEVEN…Friday through Wednesday.

Friday…

Limited Flooding Risk.  Elevated Thunderstorm Risk.

Saturday and Sunday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.

Monday and Tuesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.

DISCUSSION:

Expect warm and very humid conditions through early next week along with periods of heavy rainfall producing thunderstorms.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 30 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 300831 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 331 AM CDT Thu Aug 30 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 331 AM CDT Thu Aug 30 2018 /431 AM EDT Thu Aug 30 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Today through Tonight.

Weather hazards expected…

Limited Thunderstorm Risk very late tonight.

DISCUSSION…

A complex of storms may sneak into locations west of I-39 late tonight, though it more likely will hold off until Friday morning.

.DAYS TWO THROUGH SEVEN…Friday through Wednesday.

Friday…

Limited Flooding Risk.  Elevated Thunderstorm Risk.

Saturday and Sunday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.

Monday and Tuesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.

DISCUSSION: Expect warm and very humid conditions through early next week along with periods of heavy rainfall producing thunderstorms.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 292022 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 322 PM CDT Wed Aug 29 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 322 PM CDT Wed Aug 29 2018 /422 PM EDT Wed Aug 29 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

High Swim Risk

DISCUSSION…

Large waves will lead to a high risk of rip currents at Indiana  Lake Michigan beaches.

.DAYS TWO THROUGH SEVEN…Thursday through Tuesday.

Thursday…

Limited Thunderstorm Risk.

Friday…

Limited Severe Thunderstorm Risk.

Saturday and Sunday…

Limited Thunderstorm Risk.

Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 291731 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1231 PM CDT Wed Aug 29 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1231 PM CDT Wed Aug 29 2018 /131 PM EDT Wed Aug 29 2018/

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.  High Swim Risk

DISCUSSION…

There is a chance of thunderstorms this afternoon, mainly southeast of a Valparaiso to Pontiac line.

.DAYS TWO THROUGH SEVEN…Thursday through Tuesday.

Friday…

Limited Severe Thunderstorm Risk.  Limited Flooding Risk.

Saturday…

Limited Thunderstorm Risk.

Sunday and Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east at 20 to 25 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 290916 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 416 AM CDT Wed Aug 29 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 416 AM CDT Wed Aug 29 2018 /516 AM EDT Wed Aug 29 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Early this Morning through Tonight.

Weather hazards expected…

Limited Thunderstorm Risk in the morning.  High Swim Risk in the afternoon.

DISCUSSION…

Moderate rain with embedded thunder will diminish through the morning and early afternoon. A cold front will lead to a sharp wind shift to northerly this afternoon, and these north winds will build waves across southern Lake Michigan. A high swim risk will exist across northwest Indiana beaches later today, with a moderate risk across northeast Illinois.

.DAYS TWO THROUGH SEVEN…Thursday through Tuesday.

Friday…

Limited to Elevated Thunderstorm Risk.

Saturday…

Limited Thunderstorm Risk.

Sunday and Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Thunderstorm Risk.

DISCUSSION:

Periods of thunderstorms are possible late week through early

next week.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

</pre>

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Flash Flood Watch Cancellation for McHenry Co., IL

<pre>WGUS63 KLOT 290836 FFALOT

Flood Watch National Weather Service Chicago IL 336 AM CDT Wed Aug 29 2018

/O.CAN.KLOT.FF.A.0006.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Lake IN- Including the cities of Rockford, Belvidere, Woodstock, Waukegan, Oregon, Dixon, DeKalb, Aurora, Elgin, Wheaton, Chicago, Ottawa, Oswego, Morris, Joliet, and Gary 336 AM CDT Wed Aug 29 2018

…FLASH FLOOD WATCH IS CANCELLED…

The Flash Flood Watch for portions of Illinois and northwest Indiana has been cancelled.

Moderate rain with occasional thunderstorms will continue through mid morning, and localized flooding remains possible, but heavy rainfall that would lead to flash flooding is not expected. Do continue to heed any road closures, and if you encounter a flooded roadway, turn around dont drown. </pre>

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Areal Flood Advisory Expiration for McHenry Co., IL

<pre>WGUS83 KLOT 290514 FLSLOT

Flood Advisory National Weather Service Chicago/Romeoville Il 1214 AM CDT WED AUG 29 2018

/O.EXP.KLOT.FA.Y.0041.000000T0000Z-180829T0515Z/ /00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kendall IL-Lake IL-Will IL-Kane IL-McHenry IL-DuPage IL-Cook IL- 1214 AM CDT WED AUG 29 2018

…THE URBAN AND SMALL STREAM FLOOD ADVISORY WILL EXPIRE AT 1215 AM CDT FOR NORTHERN KENDALL…LAKE…NORTHWESTERN WILL…KANE… MCHENRY…DUPAGE AND COOK COUNTIES…

The heavy rain has ended, and flooding is no longer expected to pose a threat. However, light to moderate rain will persist overnight.

LAT…LON 4227 8783 4213 8774 4206 8767 4190 8761

4190 8760 4188 8762 4185 8761 4172 8752  4169 8753 4161 8810 4161 8860 4249 8859  4249 8780

</pre>

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Severe Thunderstorm Watch Cancellation for McHenry Co., IL

<pre>WWUS63 KLOT 290351 WCNLOT

WATCH COUNTY NOTIFICATION FOR WATCH 359 NATIONAL WEATHER SERVICE CHICAGO IL 1051 PM CDT TUE AUG 28 2018

/O.CAN.KLOT.SV.A.0359.000000T0000Z-180829T0500Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 359 FOR THE FOLLOWING AREAS

IN ILLINOIS THIS CANCELS 5 COUNTIES

IN NORTH CENTRAL ILLINOIS

BOONE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

LAKE IL MCHENRY

THIS INCLUDES THE CITIES OF OREGON. </pre>

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Areal Flood Advisory for McHenry Co., IL until 12:15 AM CDT 8/29

<pre>WGUS83 KLOT 290219 FLSLOT

Flood Advisory National Weather Service Chicago/Romeoville Il 919 PM CDT TUE AUG 28 2018

/O.NEW.KLOT.FA.Y.0041.180829T0219Z-180829T0515Z/ /00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kendall IL-Lake IL-Will IL-Kane IL-McHenry IL-DuPage IL-Cook IL- 919 PM CDT TUE AUG 28 2018

The National Weather Service in Chicago has issued a

• Urban and Small Stream Flood Advisory for Poor Drainage Areas for… Northern Kendall County in northeastern Illinois… Lake County in northeastern Illinois… Northwestern Will County in northeastern Illinois… Kane County in northeastern Illinois… McHenry County in northeastern Illinois… DuPage County in northeastern Illinois… Cook County in northeastern Illinois…

• Until 1215 AM CDT

• At 916 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. These storms have a history of producing up to 2 inches in an hour or less.

• Some locations that will experience flooding include… Chicago, Aurora, Naperville, Elgin, Waukegan, Cicero, Arlington Heights, Evanston, Schaumburg, Bolingbrook, Palatine, Skokie, Des Plaines, Orland Park, Oak Lawn, Berwyn, Mount Prospect, Wheaton, Hoffman Estates and Oak Park.

Rainfall of up to 2 inches is expected over the area. This heavy rain will lead to flooding in low lying and flood prone areas and along some streams.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Be especially cautious at night when it is harder to recognize the dangers of flooding.

&&

LAT…LON 4227 8783 4213 8774 4206 8767 4190 8761

4190 8760 4188 8762 4185 8761 4172 8752  4169 8753 4161 8810 4161 8860 4249 8859  4249 8780

</pre>

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Flash Flood Watch for McHenry Co., IL until 07:00 AM CDT 8/29

<pre>WGUS63 KLOT 290104 FFALOT

URGENT – IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Chicago IL 804 PM CDT Tue Aug 28 2018

..FLASH FLOOD WATCH IN EFFECT UNTIL 7 AM CDT WEDNESDAY…

/O.NEW.KLOT.FF.A.0006.180829T0104Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Lake IN- Including the cities of Rockford, Belvidere, Woodstock, Waukegan, Oregon, Dixon, DeKalb, Aurora, Elgin, Wheaton, Chicago, Ottawa, Oswego, Morris, Joliet, and Gary 804 PM CDT Tue Aug 28 2018

…FLASH FLOOD WATCH IN EFFECT UNTIL 7 AM CDT WEDNESDAY…

The National Weather Service in Chicago has issued a

• Flash Flood Watch for portions of Illinois and northwest Indiana, including the following areas, in Illinois, Boone, Cook, DeKalb, DuPage, Grundy, Kane, Kendall, La Salle, Lake IL, Lee, McHenry, Ogle, Will, and Winnebago. In northwest Indiana, Lake IN.

• Until 7 AM CDT Wednesday

• Periods of heavy rain associated with strong thunderstorms are expected overnight tonight. Given recent rainfall, anticipated high rainfall rates and high soil moisture, the thunderstorms may produce localized flash flooding.

• Rivers and streams in urbanized areas may see rapid rises as the heavy rainfall quickly goes into runoff.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

&& </pre>

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Severe Thunderstorm Watch for McHenry Co., IL until 12:00 AM CDT 8/29

<pre>WWUS63 KLOT 290037 WCNLOT

WATCH COUNTY NOTIFICATION FOR WATCH 359 NATIONAL WEATHER SERVICE CHICAGO IL 737 PM CDT TUE AUG 28 2018

/O.NEW.KLOT.SV.A.0359.180829T0037Z-180829T0500Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 359 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 15 COUNTIES

IN NORTH CENTRAL ILLINOIS

BOONE DEKALB LA SALLE LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY KANE KANKAKEE KENDALL LAKE IL MCHENRY WILL

IN INDIANA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHWEST INDIANA

LAKE IN PORTER

THIS INCLUDES THE CITIES OF AURORA, CHICAGO, DEKALB, DIXON, DOUGLAS PARK, GARY, HUMBOLDT PARK, HYDE PARK, JOLIET, KANKAKEE, LAKEVIEW, LINCOLN PARK, LOGAN SQUARE, MORRIS, OREGON, OSWEGO, OTTAWA, VALPARAISO, AND WHEATON. </pre>

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Mesoscale Discussion for McHenry Co., IL

<pre>ACUS11 KWNS 290005 SWOMCD

Mesoscale Discussion 1384 NWS Storm Prediction Center Norman OK 0705 PM CDT Tue Aug 28 2018

Areas affected…Northern Illinois…far southern Wisconsin and far northwest Indiana

Concerning…Severe potential…Watch likely

Valid 290005Z – 290100Z

Probability of Watch Issuance…80 percent

SUMMARY…A severe thunderstorm watch will likely be needed downstream of severe thunderstorm watch 357. The primary threat will be damaging winds from a line of storms moving toward the area.

DISCUSSION…A well organized bowing segment in east central Iowa has recently produced winds of 83 mph in Iowa City, Iowa. This bow will move through Davenport in the next 30 minutes and then continue east across northern Illinois. This area had been stabilized by earlier convection, but this area has recovered somewhat over the past few hours. Therefore, there is likely enough instability to support a continued wind damage threat from this bowing segment, albeit likely less intense than it has been in eastern Iowa where the thermodynamic environment is more favorable. South of the apex of this bow, the organized severe wind threat will likely be less, but additional storm development in a highly unstable airmass will support at least some threat of large hail and damaging winds. The low-level jet is starting to strengthen per regional VWP sites which will elongate the low-level hodograph and may briefly increase the tornado threat, especially north of the apex of the bow. However, the primary threat is expected to remain damaging straight line winds.

..Bentley/Thompson.. 08/29/2018

…Please see www.spc.noaa.gov for graphic product…

ATTN…WFO…LOT…ILX…MKX…DVN…

LAT…LON 42828936 42868878 42828798 42708759 42438729 41968705

41588708 40968725 40738757 40598807 40538848 40548911  40578979 40779008 41009030 41349053 41919053 42418998  42828936 </pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 282147 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 447 PM CDT Tue Aug 28 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 447 PM CDT Tue Aug 28 2018 /547 PM EDT Tue Aug 28 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

Significant Thunderstorm Risk...with an associated:     Limited hail risk...up to quarter.     Elevated damaging wind risk...up to 60 mph.  Significant Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Scattered thunderstorms are likely through tonight. Some of the storms could become severe with the primary risk being locally damaging winds. In addition, due to the very moist air mass in place, the potential exists for locally heavy rainfall which could result in a flash flood threat.

.DAYS TWO THROUGH SEVEN…Wednesday through Monday.

Wednesday…

Limited Thunderstorm Risk.  High Swim Risk

Thursday…

Limited Thunderstorm Risk.

Friday…

Elevated Thunderstorm Risk.

Saturday and Sunday…

Limited Thunderstorm Risk.

Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east or northeast at 25 to 35 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 281703 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1203 PM CDT Tue Aug 28 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1203 PM CDT Tue Aug 28 2018 /103 PM EDT Tue Aug 28 2018/

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…

Significant Thunderstorm Risk...with an associated:     Elevated hail risk...up to quarter size.     Elevated damaging wind risk...up to 60 mph.     Limited Tornado risk.  Significant Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Scattered thunderstorms are likely through tonight. Some of the storms could become severe with the primary risk being locally damaging winds. In addition, due to the very moist air mass in place, the potential exists for locally heavy rainfall which could result in a flash flood threat.

.DAYS TWO THROUGH SEVEN…Wednesday through Monday.

Wednesday…

Limited Thunderstorm Risk.

Friday through Monday…

Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed this afternoon into tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward east or northeast at 25 to 35 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 280822 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 322 AM CDT Tue Aug 28 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 322 AM CDT Tue Aug 28 2018 /422 AM EDT Tue Aug 28 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Today through Tonight.

Weather hazards expected…

Significant Thunderstorm Risk...with an associated:     Elevated damaging wind risk...up to 60 mph.     Elevated hail risk...up to quarter size.     Limited Tornado risk.  Significant Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION… There is a higher chance for thunderstorms late today, and especially this evening. Some of these could become severe with strong winds the main hazard, though hail or even a tornado though lower probability are still possible. In addition to the severe concerns, torrential rainfall may occur in some of the storms and lead to flooding, especially for areas along and north of Interstate 88.

Lastly, hot and humid conditions will persist for another day. Highs will again reach around 90, with uncomfortable humidity levels.

.DAYS TWO THROUGH SEVEN…Wednesday through Monday.

Wednesday…

Moderate Swim Risk becoming High Wednesday evening.  Limited Thunderstorm Risk.

Friday through Monday…

Limited Thunderstorm Risk.

DISCUSSION:

North winds behind a cold front Wednessday will bring a moderate to high swim risk. A few thunderstorms may linger mainly south and east of I-55. Several periods of storms are possible this weekend into early next weekend.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late this afternoon and tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the northeast at 35 to 40 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 272059 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 359 PM CDT Mon Aug 27 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 359 PM CDT Mon Aug 27 2018 /459 PM EDT Mon Aug 27 2018/

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 north late tonight.  Elevated Excessive heat Risk.

DISCUSSION…

Heat indices from 100 to 105 degrees will continue into the early evening for areas along and south of I-88.

Isolated thunderstorms are possible late tonight mainly for far northern Illinois.

.DAYS TWO THROUGH SEVEN…Tuesday through Sunday.

Tuesday…

Elevated Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Elevated Thunderstorm Risk.  High Swim Risk

Friday…

Elevated Thunderstorm Risk.

Saturday and Sunday…

Limited Thunderstorm Risk.

DISCUSSION:

Severe thunderstorms are possible beginning late Tuesday afternoon in northwest Illinois and continuing into Tuesday evening for areas west of I-55 and a small portion of northwest Indiana. Strong winds are the primary concern at this time. These storms also could produce locally heavy rain Tuesday evening into the overnight hours.

Hot and humid conditions are likely again Tuesday, with max heat indices around 100 degrees for much of the outlook area.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 15 to 20 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 271734 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1234 PM CDT Mon Aug 27 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1234 PM CDT Mon Aug 27 2018 /134 PM EDT Mon Aug 27 2018/

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 north late tonight.  Elevated Excessive heat Risk.

DISCUSSION…

Hot and humid conditions are likely today, with heat indices at or above 105 degrees expected for areas along and south of I-88.

Isolated thunderstorms are possible late tonight mainly for far northern Illinois.

.DAYS TWO THROUGH SEVEN…Tuesday through Sunday.

Tuesday…

Elevated Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Severe Thunderstorm Risk.

Friday and Saturday…

Elevated Thunderstorm Risk.

Sunday…

Limited Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are possible again Tuesday, with heat indices possibly reaching 100 to 105 degrees in some locations. In addition, there are periodic chances for thunderstorms with severe storms producing heavy rainfall possible, especially Tuesday afternoon into Wednesday morning.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the southeast at 20 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 270945 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 445 AM CDT Mon Aug 27 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 445 AM CDT Mon Aug 27 2018 /545 AM EDT Mon Aug 27 2018/

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  Limited Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Isolated thunderstorms are possible along and northwest of a line from Dixon to Harvard Illinois through midday. Severe weather is not expected at this time. Additional thunderstorms are possible very late tonight mainly for far northern Illinois. A few stronger storms will be possible during this time.

Hot and humid conditions are likely today, with heat indices at or above 105 degrees expected for areas along and south of I-88.

.DAYS TWO THROUGH SEVEN…Tuesday through Sunday.

Tuesday…

Elevated Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Severe Thunderstorm Risk.

Friday and Saturday…

Elevated Thunderstorm Risk.

Sunday…

Limited Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are possible again Tuesday, with heat indices possibly reaching 100 to 105 degrees in some locations. In addition, there are periodic chances for thunderstorms with severe storms producing heavy rainfall possible, especially Tuesday into Wednesday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at around 40 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 270248 AAA HWOLOT

Hazardous Weather Outlook…UPDATED National Weather Service Chicago/Romeoville IL 948 PM CDT Sun Aug 26 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 948 PM CDT Sun Aug 26 2018 /1048 PM EDT Sun Aug 26 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

Elevated Thunderstorm Risk...with an associated:     Limited Tornado risk.     Limited Hail Risk...up to quarter size.     Limited Damaging Wind Risk...up to 60 mph.  Limited Flooding Risk.

DISCUSSION…

Scattered storms will remain possible through the rest of tonight, mainly north of Interstate 80. Some of these could be severe. In addition, the very moist atmosphere sets the stage for heavy rainfall in the region which could cause flash flooding, mainly near the Wisconsin state line.

.DAYS TWO THROUGH SEVEN…Monday through Friday.

Monday…

Elevated Excessive Heat Risk.  Limited Thunderstorm Risk.

Tuesday…

Elevated Excessive Heat Risk.  Limited Severe Thunderstorm Risk.  Limited Flooding Risk.

Wednesday…

Limited Thunderstorm Risk.

Friday…

Limited Thunderstorm Risk.

Saturday…

Elevated Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are expected through Tuesday with heat indices of 100 to 105 degrees expected Monday mainly along and south of Interstate 88. In addition, there are periodic chances for thunderstorms with severe storms possible, especially on Tuesday.

.SPOTTER INFORMATION STATEMENT…

Spotter activation is not expected tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at 35 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 262011 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 311 PM CDT Sun Aug 26 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 311 PM CDT Sun Aug 26 2018 /411 PM EDT Sun Aug 26 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

Elevated Thunderstorm Risk...with an associated:     Limited Tornado risk.     Elevated hail risk...up to quarter size.     Elevated damaging wind risk...up to 50 mph.  Limited Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Scattered thunderstorms will be possible through tonight across much of the area primarily north of Interstate 80. The overall highest thunderstorm chances through this evening look to be into portions of northwest, north central, and far northern Illinois, roughly northwest of a line from Mendota to Waukegan. The strongest thunderstorms may be capable of producing damaging winds and large hail.

Hot and humid conditions are in place across the area. The highest heat indices at or above 105 degrees will occur primarily along and south of the Illinois and Kankakee river valleys in Illinois.

.DAYS TWO THROUGH SEVEN…Monday through Saturday.

Monday…

Limited Thunderstorm Risk.  Elevated Excessive Heat Risk.

Tuesday…

Limited Severe Thunderstorm Risk.  Limited Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.

Friday…

Limited Thunderstorm Risk.

Saturday…

Elevated Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are expected through Tuesday with heat indices of 100 to 105 degrees expected Monday mainly along and south of Interstate 80. In addition, there are periodic chances for thunderstorms with severe storms possible, especially on Tuesday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed through this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at around 30 to 40 mph.

</pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 261805 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 105 PM CDT Sun Aug 26 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 105 PM CDT Sun Aug 26 2018 /205 PM EDT Sun Aug 26 2018/

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…

Elevated Thunderstorm Risk...with an associated:     Elevated hail risk...up to quarter size.     Elevated damaging wind risk...up to 50 mph.  Limited Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Scattered thunderstorms will be possible through tonight across much of the area primarily north of Interstate 80. The overall highest thunderstorm chances through this evening look to be into portions of northwest, north central, and far northern Illinois, roughly northwest of a line from Mendota to Waukegan. The strongest thunderstorms may be capable of producing damaging winds and large hail.

Hot and humid conditions are in place across the area. The highest heat indices at or above 105 degrees will occur primarily along and south of the Illinois and Kankakee river valleys in Illinois.

.DAYS TWO THROUGH SEVEN…Monday through Saturday.

Monday…

Limited Flooding Risk.  Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.

Friday…

Limited Thunderstorm Risk.

Saturday…

Elevated Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are expected through Tuesday with heat indices of 100 to 105 degrees possible in places. In addition, there are periodic chances for thunderstorms with severe storms possible, especially on Tuesday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late today through this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at around 30 to 40 mph.

</pre>

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Dense Fog Advisory Expiration for McHenry Co., IL

<pre>WWUS73 KLOT 261406 NPWLOT

URGENT – WEATHER MESSAGE National Weather Service Chicago IL 906 AM CDT Sun Aug 26 2018

/O.EXP.KLOT.FG.Y.0016.000000T0000Z-180826T1400Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-Kendall- Including the cities of Rockford, Belvidere, Woodstock, Waukegan, Oregon, Dixon, DeKalb, Aurora, Elgin, and Oswego 906 AM CDT Sun Aug 26 2018

…DENSE FOG ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING…

Visibility is improving across the area, through a few isolated pockets of fog may linger a little longer. The Dense Fog Advisory will be allowed to expire on time. </pre>

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Dense Fog Advisory for McHenry Co., IL until 09:00 AM CDT 8/26

<pre>WWUS73 KLOT 261158 NPWLOT

URGENT – WEATHER MESSAGE National Weather Service Chicago IL 658 AM CDT Sun Aug 26 2018

/O.CON.KLOT.FG.Y.0016.000000T0000Z-180826T1400Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-Kendall- Including the cities of Rockford, Belvidere, Woodstock, Waukegan, Oregon, Dixon, DeKalb, Aurora, Elgin, and Oswego 658 AM CDT Sun Aug 26 2018

…DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING…

• VISIBILITY…Less than a quarter mile.

• IMPACTS…Low visibilities will create hazardous travel conditions. Visibility may change suddenly over very short distances.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Dense Fog Advisory means visibilities will frequently be reduced to less than one quarter mile. If driving…slow down… use your headlights…and leave plenty of distance ahead of you.

&& </pre>

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Dense Fog Advisory for McHenry Co., IL until 09:00 AM CDT 8/26

<pre>WWUS73 KLOT 261020 NPWLOT

URGENT – WEATHER MESSAGE National Weather Service Chicago IL 520 AM CDT Sun Aug 26 2018

/O.CON.KLOT.FG.Y.0016.000000T0000Z-180826T1400Z/ Winnebago-Boone-McHenry-Ogle-Lee-DeKalb-Kane-Kendall- Including the cities of Rockford, Belvidere, Woodstock, Oregon, Dixon, DeKalb, Aurora, Elgin, and Oswego 520 AM CDT Sun Aug 26 2018

…DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING…

• VISIBILITY…Less than a quarter mile.

• IMPACTS…Low visibilities will create hazardous travel conditions. Visibility may change suddenly over very short distances.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Dense Fog Advisory means visibilities will frequently be reduced to less than one quarter mile. If driving…slow down… use your headlights…and leave plenty of distance ahead of you.

&& </pre>

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Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 260937 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 437 AM CDT Sun Aug 26 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 437 AM CDT Sun Aug 26 2018 /537 AM EDT Sun Aug 26 2018/

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:     Elevated hail risk...up to quarter size.     Elevated damaging wind risk...up to 60 MPH.  Limited Flooding Risk.  Elevated Excessive heat Risk.  Significant Fog Risk.

DISCUSSION…

Dense fog is likely across portions of northern Illinois through mid morning.

Scattered thunderstorms are possible across much of the outlook area this afternoon into the evening, though the highest chances are expected to be along and north of I-80. Some of the stronger storms will be capable of producing large hail and damaging winds, mainly along and north of I-80.

Hot and humid conditions are expected across the entire outlook area today, with heat indices at or above 105 degrees south of I-80 in east central Illinois.

.DAYS TWO THROUGH SEVEN…Monday through Saturday.

Monday…

Limited Flooding Risk.  Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Tuesday…

Limited Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Thunderstorm Risk.

Friday…

Limited Thunderstorm Risk.

Saturday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.

DISCUSSION:

Hot and humid conditions are expected through Tuesday with heat indices of 100 to 105 degrees possible in places. In addition, there are periodic chances for thunderstorms with severe storms possible, especially on Tuesday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed this afternoon and evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at 35 MPH.

</pre>

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Dense Fog Advisory for McHenry Co., IL until 09:00 AM CDT 8/26

<pre>WWUS73 KLOT 260807 NPWLOT

URGENT – WEATHER MESSAGE National Weather Service Chicago IL 307 AM CDT Sun Aug 26 2018

/O.NEW.KLOT.FG.Y.0016.180826T0807Z-180826T1400Z/ Winnebago-Boone-McHenry-Ogle-Lee-DeKalb-Kane-Kendall- Including the cities of Rockford, Belvidere, Woodstock, Oregon, Dixon, DeKalb, Aurora, Elgin, and Oswego 307 AM CDT Sun Aug 26 2018

…DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING…

The National Weather Service in Chicago has issued a Dense Fog Advisory, which is in effect until 9 AM CDT this morning.

• VISIBILITY…Less than a quarter mile.

• IMPACTS…Low visibilities will create hazardous travel conditions. Visibility may change suddenly over very short distances.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Dense Fog Advisory means visibilities will frequently be reduced to less than one quarter mile. If driving…slow down… use your headlights…and leave plenty of distance ahead of you.

&& </pre>

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