856
WGUS73 KLOT 171121
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
621 AM CDT SUN AUG 17 2025
ILC063-075-091-093-197-171215-
/O.CON.KLOT.FF.W.0018.000000T0000Z-250817T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GRUNDY IL-IROQUOIS IL-KANKAKEE IL-KENDALL IL-WILL IL-
621 AM CDT SUN AUG 17 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM CDT THIS
MORNING FOR NORTHERN IROQUOIS, NORTHEASTERN GRUNDY, KANKAKEE,
SOUTHERN KENDALL AND SOUTHWESTERN WILL COUNTIES...
AT 621 AM CDT, WHILE THE HEAVIEST RAINFALL RATES HAVE DIMINISHED,
DOPPLER RADAR INDICATED ADDITIONAL SCATTERED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS PORTIONS OF THE WARNED AREA. ADDITIONAL RAINFALL
AMOUNTS UP TO 1 INCH ARE POSSIBLE IN THE WARNED AREA WITHIN THE NEXT
HOUR. FLASH FLOODING IS LIKELY ALREADY OCCURRING IN PORTIONS OF THE
WARNED AREA.
HAZARD...FLASH FLOODING.
SOURCE...RADAR.
IMPACT...RAPID-ONSET FLOODING OF CREEKS, STREAMS, DRAINAGE
DITCHES, STREETS, UNDERPASSES, LOW-LYING AREAS, AND
OTHER POOR DRAINAGE AREAS.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
KANKAKEE, BOURBONNAIS, YORKVILLE, BRADLEY, MORRIS, CHANNAHON,
MINOOKA, MANTENO, BRAIDWOOD, WILMINGTON, COAL CITY, MOMENCE,
HERSCHER, CLIFTON, SHOREWOOD, DIAMOND, ELWOOD, LIMESTONE AND
GARDNER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS RAPID-ONSET FLOODING IS IMMINENT OR MAY
ALREADY BE OCCURRING. PERSONS ALONG CREEKS, DRAINAGE DITCHES, AND
OTHER WATERWAYS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE
AND PROPERTY.
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
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1 INCH IN 1 HOUR
RC
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