Jun 29, 2021
Outflow boundaries from previous convection served as the focusing mechanisms for scattered thunderstorm development across central Illinois during the afternoon and evening of June 29th. One cluster of storms dropped heavy rainfall northeast of Springfield in Sangamon County, causing localized flash flooding and a few road closures.
Source: NOAA National Weather Service Storm Events Database (event 962366). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Sangamon County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.