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



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