Jul 9, 2004
Thunderstorms developed north of a warm front located across Southern Iowa and Central Illinois. Due to a near tropical atmosphere and a decaying low level jet, rainfall amounts were quite copious and occurred over very short time periods. The main problems were in urban areas where storm sewers were unable to handle the rate of rainfall.
Source: NOAA National Weather Service Storm Events Database (event 5418326). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Warren County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.