Jul 24, 2010
Strong to severe thunderstorms moved across northern Illinois during the afternoon and evening hours of July 23rd producing strong winds. Additional thunderstorms developed in the late evening of July 23rd and lasted in the early morning hours of July 24th producing very heavy rain and widespread flash flooding in many parts of the Chicago Metro Area. Rainfall rates were as much as two to three inches per hour in some areas.
Source: NOAA National Weather Service Storm Events Database (event 254325). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in De Kalb County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.