Flash Flood in Hamilton County, Illinois

Flash Flood August 4, 2025 · Hamilton County, Illinois

$5K

Damage as recorded

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

What the National Weather Service wrote

A vehicle was stuck in water on IL-14 at Ten Mile Rd around the time rainfall rates peaked at around 0.75'' in 15 minutes.

The wider storm

A shortwave trough and closed low reached the Quad State from the northwest during the morning of the 4th. The arrival of the shortwave preceded peak heating by several hours, limiting convective potential. Shear was very weak and instability limited. Slow-moving storms did produce torrential rainfall, with flooding issues reported in Hamilton County.

Began near Diamond City (38.0800, -88.5900).

Source: NOAA Storm Events Database, event 1289942. Narratives are written by the National Weather Service forecast office that issued the report.

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