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EF0 tornado in Morgan County, Missouri

Tornado May 20, 2013 · Morgan County, Missouri

EF0
Rating
0.7 mi
Path length
100 yd
Path width
$50K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 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 briefly touched down about 3 miles west-northwest of Gravois Mills uprooting numerous trees and causing minor structural damage. The winds were estimated between 70 to 80 mph.

The wider storm

A strong negatively titled upper level trough developed over the central portions of the country. A slow moving cold front moved into the Missouri Ozarks. This setup caused for several rounds of severe and slow moving thunderstorms which lead to widespread wind damage, large hail, and several low end tornadoes along with isolated flooding due to heavy rainfall.

Began near Gravois Mills (38.3300, -92.8700).

Other tornadoes from the same storm system

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

EF2 Newton CountyEF1 Jasper CountyEF1 Barton CountyEF1 Stone CountyEF1 Barry CountyEF0 Dade CountyEF0 Cedar CountyEF0 St. Clair County

Source: NOAA Storm Events Database, event 441626. Narratives are written by the National Weather Service forecast office that issued the report.

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