Flash Flood in Winneshiek County, Iowa

Flash Flood August 18, 2025 · Winneshiek County, Iowa

$20K

Damage as recorded

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

What the National Weather Service wrote

Emergency management reported basements flooded in Calmar.

The wider storm

Repeated rounds of rain led to increased saturation in soils during the month of August. As a result, when additional training storms moved over northeast Iowa during the morning hours on August 18th, numerous roads were flooded in Chickasaw and Winneshiek counties.

Began near Calmar (43.1800, -91.8600).

Source: NOAA Storm Events Database, event 1289339. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.