Illinois Severe Flash Flood Warning | Effective 07/27/2026 13:36

Headline: 
Flash Flood Warning issued July 27 at 3:36PM CDT until July 27 at 6:45PM CDT by NWS Chicago IL
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 27, 2026 - 1:36pm
Expires: 
July 27, 2026 - 4:45pm
Description: 
FFWLOT The National Weather Service in Chicago has issued a * Flash Flood Warning for... Northeastern Kendall County in northeastern Illinois... Northwestern Will County in northeastern Illinois... * Until 645 PM CDT. * At 336 PM CDT, Doppler radar indicated thunderstorms producing rainfall rates of 1 to 3 inches per hour. Up to 1.5 inches has fallen from this storm over the last 30 minutes near Plainfield and Oswego. Flash flooding is expected to begin shortly. 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... Joliet, Bolingbrook, Romeoville, Plainfield, Oswego, Lockport, New Lenox, Homer Glen, Mokena, Frankfort, Channahon, Minooka, Crest Hill, Shorewood, Manhattan, Ingalls Park, Elwood, Preston Heights.
Instruction: 
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.
Area Description: 
Kendall, IL; Will, IL
Forcast Office: 
NWS Chicago IL