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EF1 tornado in Barton County, Missouri

Tornado May 20, 2013 · Barton County, Missouri

EF1

Rating

6.8 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 EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 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-1 tornado touched down 7 miles west-northwest of Lamar and tracked 7 miles to the northeast. Several trees along with a couple of outbuildings were destroyed. Winds were estimated around 95 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 Iantha (37.5204, -94.4237).

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 Stone County EF1 Barry County EF0 Dade County EF0 Cedar County EF0 Morgan County EF0 St. Clair County

Source: NOAA Storm Events Database, event 441628. Narratives are written by the National Weather Service forecast office that issued the report.

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