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Tornado in Webster County, Iowa

Tornado June 4, 2024 · Webster County, Iowa

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Not rated

0.2 mi

Path length

30 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 30 yards (0.02 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 was captured on video near Clare during the late afternoon. The tornado remained in open cropland with no impacts to damage indicators, hence the EFU rating.

The wider storm

An MCV lifting into eastern Iowa into the early afternoon, with favorable conditions led to funnel cloud formation in eastern Iowa, particularly near the Tama/Poweshiek county border. Following this activity, an upper level trough and associated cold front entered western Iowa into the afternoon and pushed across the state, with 1000-2000 J/kg of MLCAPE and shear around 20-30 kts allowing for some storms to become severe. This led to some damaging winds and hail to occur in portions of central Iowa, as well as heavy rain in central and northern Iowa given the slow-moving nature of the storms. A brief tornado occurred with thunderstorms northwest of Fort Dodge.

Began near Clare (42.6143, -94.2988).

Source: NOAA Storm Events Database, event 1190573. Narratives are written by the National Weather Service forecast office that issued the report.

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