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EF1 tornado in Henry County, Iowa

Tornado June 20, 2015 · Henry County, Iowa

EF1

Rating

3.5 mi

Path length

75 yd

Path width

Injuries

$100K

Damage as recorded

$10K

Crop damage

EF0EF1EF2EF3EF4EF5Unrated

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

An NWS Storm Survey found a tornado touched down 2.5 miles southeast of Mount Pleasant and remained on the ground for 3.45 miles before lifting 2.67 miles southwest of New London. The tornado was rated EF-1 with peak winds estimated at 105 MPH. The damage was primarily to farm outbuildings and trees. Two people were injured when a mobile home was rolled over by the tornado.

The wider storm

Widespread severe thunderstorms from the late morning through the evening hours June 20th, produced large hail, damaging winds, and heavy rains. In addition 4 tornadoes occurred. One tornado resulted in 2 injuries when a house was destroyed. Another person was injured by a lightning strike.

Began near Mt Pleasant Muni Arp (40.9177, -91.4800).

Other tornadoes from the same storm system

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

EF1 Washington County EF1 Lee County EF1 Des Moines County

Source: NOAA Storm Events Database, event 590313. Narratives are written by the National Weather Service forecast office that issued the report.

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