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EF1 tornado in Plymouth County, Iowa

Tornado October 4, 2013 · Plymouth County, Iowa

EF1
Rating
1.1 mi
Path length
100 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 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

A tornado caused tree damage, including several trees snapped off at the trunks.

The wider storm

Thunderstorms produced eleven tornadoes, several of them causing damage, which tracked wholly or partly in northwest Iowa during the afternoon and early evening of October 4th. There were also two reports of large hail and one report of non tornadic damaging thunderstorm winds.

Began near Millnerville (42.6758, -96.4453).

Other tornadoes from the same storm system

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

EF4 Woodbury CountyEF2 Woodbury CountyEF1 Union CountyEF1 Buena Vista CountyEF1 Woodbury CountyEF0 Plymouth CountyEF0 Cherokee CountyEF0 Cherokee CountyEF0 Cherokee CountyEF0 Clay County

Source: NOAA Storm Events Database, event 476081. Narratives are written by the National Weather Service forecast office that issued the report.

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