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Flash Flood in McHenry County, Illinois

Flash Flood June 11, 2026 · McHenry County, Illinois

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

What the National Weather Service wrote

Route 23 was closed between Coral Road and Grange Road due to flooding.

The wider storm

Severe thunderstorms moved across northern Illinois during the afternoon and evening of June 11th producing wind damage, localized flooding and several tornadoes.

Began near Riley (42.2202, -88.6217).

Other tornadoes from the same storm system

15 more tornadoes the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 1345194. Narratives are written by the National Weather Service forecast office that issued the report.

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