Thunderstorm Wind — Union, Iowa

2024-04-30 · near Creston, Union, Iowa

Event narrative

Damage to trees and house. Time estimated by radar.

Wider weather episode

An embedded shortwave passed across Iowa in the afternoon, providing a focus for convection as it phased with an increasing southerly moisture stream. Steep lapse rates, plenty of instability, and hodographs supporting rotating updrafts all came together to create an environment supportive of hail producing supercells. Storms remained somewhat discrete and produced swaths of hail across central and southern Iowa. The largest hail reported was up to baseball sized in Appanoose County. A tornado also occurred in Wayne County east of Millerton with the storms.

View location on OpenStreetMap → (41.0700, -94.3600)

Source: NOAA Storm Events Database, event_id 1170917. Narrative written by the NWS forecast office that issued the report.