Hail in O'brien County, Iowa

Hail September 16, 2025 · O'brien County, Iowa

1.75 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 pea to dime size, but several stones were from quarter up to golf ball size.

The wider storm

With less than 10 knots of deep-layer shear, isolated thunderstorms were very slow moving along existing outflow boundaries and resulted in several complimentary boundary interactions. One such interaction resulted in a stronger and more persistent updraft, with hail up to half-dollar size for a brief time.

Began near Hartley (43.2200, -95.5100).

Source: NOAA Storm Events Database, event 1292621. Narratives are written by the National Weather Service forecast office that issued the report.

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