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Tornado in Carroll County, Iowa

Tornado August 5, 2023 · Carroll County, Iowa

–
Not rated
0.3 mi
Path length
25 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 25 yards (0.01 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

A brief tornado occurred north of Highway 30 west of Carroll Iowa. The tornado was found using high resolution satellite imagery. The tornado was brief and did not impact any damage indicators, hence the EFU rating.

The wider storm

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.

Began near Maple River (42.0859, -94.9636).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 1124843. Narratives are written by the National Weather Service forecast office that issued the report.

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