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Tornado in Poweshiek County, Iowa

Tornado March 31, 2023 · Poweshiek County, Iowa

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Not rated
3.6 mi
Path length
60 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 60 yards (0.03 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

Not rated. NOAA lists no rating for this tornado. Ratings come from surveying damage, and the National Weather Service now records “EFU” (unknown) when a tornado hit nothing a survey team could rate.

What the National Weather Service wrote

Local media obtained video of a tornado south of Malcolm. The path was also found in high resolution satellite imagery as well to help fill out the path. The tornado hit no damage indicator, hence the EFU rating.

The wider storm

An intense storm system tracked across the state of Iowa on Friday, March 31st. This system pulled unseasonably warm and moist conditions into the Midwest, which coupled with a very favorable wind profile and created quite the volatile environment for severe thunderstorms. This produced several long lived supercells which developed across central Iowa during the afternoon. The storms were prolific hail producers along with a few reports of wind damage as they moved rapidly northeast. Eventually, the storms produced a few tornadoes before exiting into eastern Iowa.

Began near Malcolm (41.6489, -92.5440).

Other tornadoes from the same storm system

3 more tornadoes the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 1087585. Narratives are written by the National Weather Service forecast office that issued the report.

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