Hail — Harrison, Iowa

2025-09-22 · near Pisgah, Harrison, Iowa

Event narrative

Public report of hail estimated up to 1.00 inches in diameter. Report received via mPING.

Wider weather episode

On the evening of September 22, 2025, atmospheric conditions favored the development of scattered thunderstorms along a frontal zone stretching from east-central Nebraska into western Iowa. This activity was primarily driven by the intensification of a southerly low-level jet and the associated moist advection to the east of a weak lee trough and surface low over the central High Plains. Forecast soundings showed ample buoyancy and elongated upper-level hodographs, which suggested the potential for organized convection, specifically splitting supercell clusters capable of producing large hail. The first notable severe weather report occurred west of Prague, Nebraska, at 7:26 PM CST, with a measured hailstone diameter of 1.75 inches. As the complex cluster of thunderstorms slowly tracked east into west-central Iowa, numerous additional reports of hailfall were documented throughout the evening in Saunders, Dodge and Platte counties in Nebraska and, with measured and estimated stone sizes ranging from 0.75 to 1.75 inches in diameter. One public report of hail estimated up to 1.00 inch in diameter was acquired from Harrison county, Iowa at 9:12 PM CST.

View location on OpenStreetMap → (41.8600, -95.8100)

Source: NOAA Storm Events Database, event_id 1294737. Narrative written by the NWS forecast office that issued the report.