921
WGUS63 KLOT 201517
FFALOT
FLOOD WATCH
NATIONAL WEATHER SERVICE CHICAGO IL
1017 AM CDT SUN SEP 20 2026
ILZ003>006-201630-
/O.CAN.KLOT.FA.A.0016.000000T0000Z-260920T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO-BOONE-MCHENRY-LAKE IL-
INCLUDING THE CITIES OF ALGONQUIN, MCHENRY, BELVIDERE, ROCKFORD,
CRYSTAL LAKE, WOODSTOCK, WAUKEGAN, BUFFALO GROVE, MUNDELEIN, AND
GURNEE
1017 AM CDT SUN SEP 20 2026
..FLOOD WATCH IS CANCELLED
THE FLOOD WATCH IS CANCELLED FOR PORTIONS OF NORTH CENTRAL AND
NORTHEAST ILLINOIS, INCLUDING THE FOLLOWING AREAS, IN NORTH CENTRAL
ILLINOIS, BOONE AND WINNEBAGO. IN NORTHEAST ILLINOIS, LAKE IL AND
MCHENRY.
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED REMAINING ROAD CLOSURES.
ILZ008-010>013-019>021-023-103>108-INZ001-002-201800-
/O.CON.KLOT.FA.A.0016.000000T0000Z-260920T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OGLE-LEE-DE KALB-KANE-DUPAGE-LA SALLE-KENDALL-GRUNDY-KANKAKEE-
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-NORTHERN WILL-SOUTHERN
WILL-EASTERN WILL-LAKE IN-PORTER-
INCLUDING THE CITIES OF HAMMOND, MINOOKA, KANKAKEE, JOLIET, MOKENA,
PLANO, BEECHER, PARK FOREST, BYRON, LOMBARD, PORTAGE, VALPARAISO,
EVANSTON, ELGIN, CICERO, MERRILLVILLE, MORRIS, LA SALLE, OSWEGO, LA
GRANGE, NORTHBROOK, CHESTERTON, ORLAND PARK, COAL CITY, OTTAWA,
WILMINGTON, NAPERVILLE, CHANNAHON, OAK LAWN, DEKALB, MANHATTAN,
DOWNERS GROVE, OAK FOREST, SYCAMORE, AURORA, ROCHELLE, BOURBONNAIS,
SCHAUMBURG, CAROL STREAM, STREATOR, PLAINFIELD, CHICAGO, PEOTONE,
MENDOTA, LEMONT, YORKVILLE, PALATINE, OREGON, DIXON, MARSEILLES,
CRETE, BRADLEY, GARY, BOLINGBROOK, WHEATON, CALUMET CITY, DES
PLAINES, AND OAK PARK
1017 AM CDT SUN SEP 20 2026
..FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...PORTIONS OF ILLINOIS, INCLUDING THE FOLLOWING AREAS,
CENTRAL COOK, DE KALB, DUPAGE, EASTERN WILL, GRUNDY, KANE,
KANKAKEE, KENDALL, LA SALLE, LEE, NORTHERN COOK, NORTHERN WILL,
OGLE, SOUTHERN COOK AND SOUTHERN WILL AND NORTHWEST INDIANA,
INCLUDING THE FOLLOWING AREAS, LAKE IN AND PORTER.
* WHEN...UNTIL 1 PM CDT THIS AFTERNOON.
* IMPACTS...CREEKS AND STREAMS MAY RISE OUT OF THEIR BANKS. FLOODING
MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS. UNDERPASSES MAY BE
FLOODED. ROADS AND STREETS MAY BE FLOODED.
* ADDITIONAL DETAILS...
- THE THREAT FOR WIDESPREAD HEAVY RAINFALL IS ENDING. HOWEVER,
CONTINUED MODERATE TO ISOLATED HEAVY RAINFALL MAY LEAD TO A
CONTINUED LOCALIZED FLOOD THREAT.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WATCH FOR FLASH FLOODING MEANS RAPID-ONSET FLOODING IS
POSSIBLE, BUT NOT YET CERTAIN, BASED UPON THE LATEST FORECASTS. FLASH
FLOODING IS A DANGEROUS SITUATION. PERSONS WITH INTERESTS ALONG AREA
RIVERS, CREEKS, AND OTHER WATERWAYS SHOULD MONITOR THE LATEST
FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
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