Hail in Clay County, Iowa

Hail April 28, 2025 · Clay County, Iowa

1.5 in

Hail diameter

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

What the National Weather Service wrote

Hail was mostly dime to quarter sized, but some stones were as large as ping pong balls.

The wider storm

Thunderstorms erupted along a cold front and a post-frontal boundary during the afternoon and early evening of April 28. Steep mid-level lapse rates around 8C/km and 55 to 65 knots of deep-layer shear led to severe storm structures, which evolved toward smaller-scale linear features along strong outflow pools with 60 to 65 mph winds during the event. Post-frontal storms developed in an environment of up to 1000 J/kg MUCAPE which favored mainly large hail.

Began near Dickens (43.1300, -95.0200).

Source: NOAA Storm Events Database, event 1256807. Narratives are written by the National Weather Service forecast office that issued the report.

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