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Flash Flood — Cook, Illinois

August 17, 2025 · NOAA Storm Events record

Direct deaths
0
Direct injuries
0
Property damage
$230.0M
Area
Cook

Event narrative (NOAA)

Roughly 40,000 structures sustained flood damage around the city of Chicago. The greatest impacts were felt across the southwest side near and east of Midway Airport, but reports came in from all across the city. Chicago alone accounted for approximately $230 million in flood damages.

Other notable flash flood events in Illinois

Marion · December 26, 20155 killedJo Daviess · July 27, 20113 killedCrawford · August 7, 20003 killedWill · July 17, 19962 killedLa Salle · April 18, 20131 killedCook · September 13, 20081 killed

Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.

Flash Flood — Cook, Illinois, August 17, 2025 | DisasterAtlasUSA