Hail in Guthrie County, Iowa

Hail September 3, 2025 · Guthrie County, Iowa

1 in

Hail diameter

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

What the National Weather Service wrote

Quarter sized hail reported by former NWS employee.

The wider storm

A surface low and associated surface boundary sank across the state through the morning of September 3rd. Despite little in the way of instability, with MUCAPE only around 100 J/kg and mid level lapse rates under 7 C/km, storms were able to develop along the boundary with 30-35 kts of shear. Storms were fairly weak, however one did organize enough to produce quarter sized hail that was reported in Guthrie County.

Began near Jamaica (41.8000, -94.3100).

Source: NOAA Storm Events Database, event 1297986. Narratives are written by the National Weather Service forecast office that issued the report.

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