Feb 24, 2018
Pockets of flash flooding occurred across southern Illinois. A narrow swath of torrential rainfall occurred from Cape Girardeau, MO northeast across the Marion/Carbondale area, where streets were closed. A surface low pressure center tracked rapidly north-northeast from Arkansas to the upper Mississippi Valley, dragging a warm front north across southern Illinois. Instability was adequate for thunderstorms. A very moist air mass resulted in excessive rainfall rates, which produced flash flooding
Source: NOAA National Weather Service Storm Events Database (event 737151). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Hamilton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.