Hail — Henry, Iowa

2021-07-09 · near New London, Henry, Iowa

Event narrative

A trained spotter reported nickel size hail fell for 2 minutes.

Wider weather episode

A few supercell thunderstorms developed ahead of a warm front advancing into the forecast area, where they produced gusty winds, heavy rain, and hail up to 3 inches in diameter. Storms initially developed as more discrete supercells early in the evening, with the storm that went through Burlington being one of the more intense storms. Rainfall amounts reached 2 inches or more in some areas, as the anomalously moist environment favored excessive rainfall that lead to flash flooding. The La Moine River near Colmar also raised to Minor Flood stage due to the heavy rain.

View location on OpenStreetMap → (40.9200, -91.4000)

Source: NOAA Storm Events Database, event_id 972442. Narrative written by the NWS forecast office that issued the report.