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EF1 tornado in Walworth County, Wisconsin

Tornado April 15, 2026 · Walworth County, Wisconsin

EF1

Rating

2.8 mi

Path length

75 yd

Path width

$83K

Damage as recorded

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The path drawn at its surveyed width of 75 yards (0.04 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

The tornado began west of Quinney Road and tracked to the southeast, hitting 4 barns as it tracked across farmland west of Elkhorn.

The wider storm

An organized area of low pressure tracked along a stationary over the region and brought lines and clusters of strong thunderstorms and heavy rainfall to southern WI. Flash flooding occurred in spots from Rock County to the Milwaukee area. One storm produced a tornado in Walworth county with a brief path.

Began near Delavan Lake (42.6853, -88.6442).

Source: NOAA Storm Events Database, event 1326765. Narratives are written by the National Weather Service forecast office that issued the report.

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