EFU Tornado — Sac, Iowa

2023-08-05 · near Auburn, Sac, Iowa

0.3 mi

Path length

50 yds

Path width

Event narrative

Tornado was found using high resolution satellite imagery. Tornado had a curved path through open agricultural fields. There was no damage to damage indicators, hence the EFU rating.

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 → (42.2235, -94.9021)

Source: NOAA Storm Events Database, event_id 1124847. Narrative written by the NWS forecast office that issued the report.