Flash Flood in Washington County, Illinois

Flash Flood April 4, 2025 – April 5, 2025 · Washington County, Illinois

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

What the National Weather Service wrote

Numerous roadways across Washington County were deemed impassable due to floodwater. Nearby communities to these roadways include Nashville, Okawville, Lively Grove, Saint Libory, Addieville, Hoyleton, Covington, New Minden, Venedy, Beaucoup, and Wamac. Over the duration of the event, up to 7 inches of rain fell. At times, rain rates were in excess of 2 inches per hour.

The wider storm

A stationary front over southern Missouri along with ample mid-level forcing, moisture, and efficient rain processes resulted in flash flooding across portions of southwest and south central Illinois.

Began near Noltings (38.5037, -89.1364).

Source: NOAA Storm Events Database, event 1244065. Narratives are written by the National Weather Service forecast office that issued the report.

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