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EF0 tornado in Norman County, Minnesota

Tornado August 13, 2020 · Norman County, Minnesota

EF0

Rating

0.1 mi

Path length

30 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

NOAA recorded where this tornado touched down but not where it lifted, so it appears as a point. 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

A brief touchdown was noted in pasture land east of highway 32 and just south of county road 15. Heavy rain quickly cut off the view of the storm. Peak winds were estimated at 70 mph.

The wider storm

By the early evening of Thursday, August 13th, an area of surface low pressure had set up near Mayville, North Dakota. A warm front extended out to the east-southeast from the low. South of the warm front, temperatures were in the mid to upper 80s, with dew points in the lower 70s. Thunderstorms broke out along and north of the warm front, producing large hail, damaging wind gusts, and two tornadoes.

Began near Gary (47.4200, -96.2700).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF1 Pennington County

Source: NOAA Storm Events Database, event 911132. Narratives are written by the National Weather Service forecast office that issued the report.

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