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EF1 tornado in Eau Claire County, Wisconsin

Tornado May 21, 2024 · Eau Claire County, Wisconsin

EF1

Rating

9.5 mi

Path length

440 yd

Path width

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The path drawn at its surveyed width of 440 yards (0.25 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

Hundreds of trees, possibly several thousand, were uprooted or broken by the tornado. Some landed on houses, sheds and vehicles, especially along the southeast edge of Lake Eau Claire, where many homes were located. A farm was hit near the end of the tornado. The ending point was determined via Sheriff's Office drone video.

The wider storm

A low pressure center in southeast Nebraska during the morning of May 21 reached western Wisconsin during the late evening. A warm front extended to the east-northeast from the low. Severe storms developed, producing one tornado east of the city of Eau Claire as well as some wind damage in other areas.

Began near Augusta (44.6809, -91.1223).

Source: NOAA Storm Events Database, event 1208006. Narratives are written by the National Weather Service forecast office that issued the report.

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