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EF0 tornado in Stearns County, Minnesota

Tornado July 1, 2011 · Stearns County, Minnesota

EF0
Rating
2.3 mi
Path length
30 yd
Path width
$100K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 30 yards (0.02 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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 EF-0 tornado touched down just northeast of the intersection of Interstate 94 and Highway 23. It moved northeast and dissipated in Waite Park, about 1.5 miles west of the intersection of Highway 15 and 23. Maximum winds were 65 mph with the greatest width of 30 yards. The damage was confined to uprooted or blown down trees along its path.

The wider storm

A very hot and humid day occurred across southern Minnesota, and western Wisconsin Friday, July 1st. A frontal boundary held across the southwest part of the state, then northeast across east central Minnesota, and into portions of west central and northern Wisconsin.

During the afternoon, a large thunderstorm complex developed across southeast South Dakota, along this frontal boundary and moved into far southwest Minnesota. Several long duration supercells and bow echoes occurred along a path from the southwest, to the northeast across southern Minnesota, and into west central Wisconsin.

Several of the storms developed tornadoes near Redwood Falls, and again around St. Cloud, Minnesota. In addition to the tornadoes, severe straight line winds occurred. Plus, the development of the rear inflow notch, allowed for the strong winds to continue beyond the main bow echo across many areas of southern Minnesota.

Widespread damage occurred with this system along with hundreds of large trees blown down and structural damage to homes and barns. Widespread reports of hail with each storm, along with a few reports of baseball and softball size hail.

Several communities lost power with over 90,000 reported outages throughout southern and central Minnesota.

Began near Pleasant Lake (45.5227, -94.2668).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 306521. Narratives are written by the National Weather Service forecast office that issued the report.

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