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EF2 tornado in Howard County, Iowa

Tornado May 22, 2011 · Howard County, Iowa

EF2
Rating
28.7 mi
Whole path
250 yd
Path width
4
Injuries
$775K
Damage as recorded

NOAA records this tornado county by county. Its path ran through Howard County → Fillmore County, Minnesota; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 250 yards (0.14 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF2 means. On the Enhanced Fujita scale, EF2 is considerable damage: roofs torn off well-built houses, mobile homes destroyed, large trees snapped or uprooted, consistent with estimated gusts of 111–135 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 tornado first caused some damage about 3 miles north of State Highway 9 north of Riceville. The tornado almost immediately strengthen to EF1 as it moved northeast. Several farms had outbuildings destroyed, widespread tree damage occurred and several homes had partial or complete roof damage. As the tornado passed south of Chester, it increased to its maximum width and strength. The tornado remained at EF2 strength as it crossed the state line into Fillmore County Minnesota. The tornado passed through rural portions of the county affecting around a dozen farms with only three minor injuries occurring. Around 850 customers were loss power as a result of the storms. Damages were estimated to be around $500 thousand.

The wider storm

During the afternoon of May 22nd, severe thunderstorms developed along a cold front as it moved through northeast Iowa. These severe thunderstorms produced three confirmed tornadoes. The first tornado occurred in Howard County and was rated an EF2. The second (EF1) and third (EF0) tornadoes both occurred in Fayette County. Significant damage occurred between Chester (Howard County) and Lime Springs (Howard County) where several farms had buildings completely destroyed or significantly damaged. Three minor injuries occurred with the Howard County tornado. Around 850 customers were without power after the storms moved through in Howard County. Damages were estimated to be almost $700 thousand.

Began near Riceville (43.4091, -92.4933).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 300438. Narratives are written by the National Weather Service forecast office that issued the report.

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