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EF1 tornado in Allamakee County, Iowa

Tornado August 5, 2024 · Allamakee County, Iowa

EF1

Rating

3.8 mi

Path length

50 yd

Path width

$50K

Damage as recorded

$35K

Crop damage

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 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

This EF-1 tornado damaged mainly trees along its path about 5 miles north of Waukon. One home had a garage roof taken off and several outbuildings/vehicles were damaged as well.

The wider storm

During the evening hours on August 5th, a line of severe thunderstorms brought strong winds to portions of northeast Iowa. Additionally, an embedded supercell thunderstorm would go on to produce three tornadoes in northeast Iowa.

Began near Hanover (43.3400, -91.5600).

Other tornadoes from the same storm system

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

EF0 Winneshiek County EF0 Winneshiek County

Source: NOAA Storm Events Database, event 1212816. Narratives are written by the National Weather Service forecast office that issued the report.

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