Flash Flood in Shelby County, Illinois

Flash Flood July 20, 2025 – July 21, 2025 · Shelby County, Illinois

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Water was flowing over the roadway near Highway 128 and County Highway 3 west of Findlay.

The wider storm

An outflow boundary interacting with a very moist airmass characterized by surface dewpoints in the middle to upper 70s triggered clusters of strong to severe thunderstorms across south-central Illinois during the afternoon and evening of July 20th. Scattered wind damage and flash flooding occurred...mainly south of a Shelbyville to Marshall line.

Began near Yantisville (39.5382, -88.8407).

Source: NOAA Storm Events Database, event 1276287. Narratives are written by the National Weather Service forecast office that issued the report.

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