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EF2 tornado in Steele County, Minnesota

Tornado June 17, 2010 · Steele County, Minnesota

EF2
Rating
18.1 mi
Whole path
880 yd
Path width

NOAA records this tornado county by county. Its path ran through Freeborn County → Steele County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 880 yards (0.50 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 moved from Freeborn County and into Steele County and began moving to the north-northwest, thereby missing the city of Ellendale. At about (43.9255, -93.3453), it began moving toward the northwest, and at about (43.9407, -93.3627), it actually turned some more and moved toward the west-northwest until it finally dissipated. Accounting for the change in direction, the tornado had an actual path length of 7.7 miles in Steele County. Along the way, several homes experienced significant structural damage, with one house completely destroyed and the roof removed from two others. Many outbuildings were destroyed, and hundreds of trees were uprooted and snapped.

The wider storm

Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th.

These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota.

By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability.

Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border.

These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.

Began near Ellendale (43.8481, -93.3260).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 238622. Narratives are written by the National Weather Service forecast office that issued the report.

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