Jul 26, 2025
An outflow boundary interacting with a warm and very humid environment triggered clusters of slow-moving thunderstorms across east-central Illinois during the evening of July 26th. Thanks to precipitable water values around 2.25 as per the 00z KILX upper air sounding, hourly rainfall rates of 2-3 inches occurred with the stronger storms. The hardest hit location was across portions of Champaign County from just southeast of Mahomet east-northeastward to Rantoul. An observer 1 mile southeast o
Source: NOAA National Weather Service Storm Events Database (event 1277339). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Champaign County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.