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EF0 tornado in St. Clair County, Missouri

Tornado May 20, 2013 · St. Clair County, Missouri

EF0

Rating

0.5 mi

Path length

200 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 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 produced up to 80 mph winds and uprooted trees along a half mile long path.

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 Gerster (37.9375, -93.6360).

Other tornadoes from the same storm system

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

EF2 Newton County EF1 Jasper County EF1 Barton County EF1 Stone County EF1 Barry County EF0 Dade County EF0 Cedar County EF0 Morgan County

Source: NOAA Storm Events Database, event 441632. Narratives are written by the National Weather Service forecast office that issued the report.

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