499
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
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