563  
WGUS83 KLOT 171211  
FLSLOT  
 
FLOOD ADVISORY  
NATIONAL WEATHER SERVICE CHICAGO IL  
711 AM CDT SUN AUG 17 2025  
 
ILC063-075-091-093-197-171500-  
/O.NEW.KLOT.FA.Y.0075.250817T1211Z-250817T1500Z/  
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
GRUNDY IL-IROQUOIS IL-KANKAKEE IL-KENDALL IL-WILL IL-  
711 AM CDT SUN AUG 17 2025  
   
..FLOOD ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
 
 
* WHAT...CONTINUED FLOODING CAUSED BY OVERNIGHT EXCESSIVE RAINFALL  
IS EXPECTED. THIS FLOOD ADVISORY IS REPLACING THE FLASH FLOOD  
WARNING THAT HAS BEEN IN EFFECT.  
 
* WHERE...PORTIONS OF EAST CENTRAL AND NORTHEAST ILLINOIS, INCLUDING  
THE FOLLOWING COUNTIES, IN EAST CENTRAL ILLINOIS, IROQUOIS. IN  
NORTHEAST ILLINOIS, GRUNDY, KANKAKEE, KENDALL AND WILL.  
 
* WHEN...UNTIL 1000 AM CDT.  
 
* IMPACTS...FLOODING MAY CONTINUE IN POOR DRAINAGE AND URBAN AREAS.  
ROADS AND STREETS MAY STILL BE FLOODED. HIGH WATER LIKELY MAY  
RECEDE SLOWLY FROM FLOODED AREAS. CREEKS AND STREAMS MAY RISE OUT  
OF THEIR BANKS.  
 
* ADDITIONAL DETAILS...  
- AT 707 AM CDT, DOPPLER RADAR INDICATED SCATTERED HEAVY RAIN  
PRODUCING THUNDERSTORMS ACROSS PORTIONS OF THE ADVISORY AREA.  
RADAR AND GAUGE ESTIMATES INDICATE THAT BETWEEN 2 AND 4  
INCHES OF RAIN FELL OVERNIGHT.  
- ADDITIONAL RAINFALL AMOUNTS UP TO 1 INCH ARE POSSIBLE OVER  
PARTS OF THE AREA. RUNOFF FROM THE OVERNIGHT RAIN AND  
ADDITIONAL RAINFALL WILL RESULT PROLONG THE FLOODING IN SOME  
LOCATIONS.  
- SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...  
KANKAKEE, BOURBONNAIS, YORKVILLE, BRADLEY, MORRIS, CHANNAHON,  
MINOOKA, MANTENO, BRAIDWOOD, WILMINGTON, COAL CITY, MOMENCE,  
HERSCHER, CLIFTON, SHOREWOOD, DIAMOND, ELWOOD, LIMESTONE AND  
GARDNER.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A FLOOD ADVISORY MEANS FLOODING ALONG WATERWAYS AND OTHER POOR  
DRAINAGE AREAS IS ALREADY OCCURRING. PERSONS IN THE ADVISORY AREA  
SHOULD USE CAUTION AND AVOID FLOOD WATERS.  
 
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD  
DEATHS OCCUR IN VEHICLES.  
 

 
 
LAT...LON 4162 8842 4134 8795 4126 8770 4101 8753  
4083 8753 4094 8798 4100 8813 4111 8825  
4112 8829 4145 8860 4160 8860  
 

 
 
RC  
 
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