Funnel Cloud — Calhoun, Iowa

2023-08-05 · near Lavinia, Calhoun, Iowa

Event narrative

Delayed report of a funnel cloud near Rockwell City via social media. Time and location estimated via radar.

Wider weather episode

Showers and thunderstorms percolated through much of the day along a stationary boundary over northwest Iowa. By evening a more robust shortwave moved across the area, accompanied by 30 kts of shear and 1500-2000 J/kg of MLCAPE. This allowed for storms to strengthen across west central Iowa with gusty winds producing some minor damage to trees and out buildings. Additionally, due to the orientation of the shear, a few weak tornadoes developed and were discovered using high resolution satellite imagery.

View location on OpenStreetMap → (42.4400, -94.7900)

Source: NOAA Storm Events Database, event_id 1129728. Narrative written by the NWS forecast office that issued the report.