WGUS43 KLOT 202139

FLWLOT



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Chicago IL

439 PM CDT Mon Apr 20 2026



ILC097-111-291800-

/O.EXT.KLOT.FA.W.0003.000000T0000Z-260429T1800Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Lake IL IL-McHenry IL-

439 PM CDT Mon Apr 20 2026



...FLOOD WARNING IN EFFECT UNTIL FURTHER NOTICE...



* WHAT...Flooding caused by excessive rainfall continues.



* WHERE...A portion of northeast Illinois, including the following 

  counties, Lake IL and McHenry.



* WHEN...Until further notice.



* IMPACTS...Numerous roads, yards, structures, and park land are 

  expected to flood along the Fox River Chain of Lakes.



* ADDITIONAL DETAILS...

  - At 438 PM CDT, River gauges along the Fox River Chain of

    Lakes indicated water levels continuing to rise slowly. Water

    levels exceeded moderate flood stage earlier today. The

    latest forecast from the Illinois Department of Natural

    Resources indicates that water levels may near major flood

    stage by the middle of this week.

  - Water levels are expected to remain above flood stage at

    least through the middle of next week, assuming no additional

    rainfall occurs. Impacts from this flood may be similar to

    those experienced in May of 1973, October of 1986, or June of

    2008.

  - Some locations that will experience flooding include areas

    along the Fox River Chain of Lakes, including Nippersink

    Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie,

    Channel Lake, and Lake Catherine.

  - http://www.weather.gov/safety/flood



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Turn around, don't drown when encountering flooded roads. Most flood 

deaths occur in vehicles.



&&



LAT...LON 4250 8810 4250 8809 4245 8809 4238 8813

      4234 8818 4238 8829 4242 8820 4246 8820

      4250 8820 4250 8819





$$



WSL