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EF1 tornado in Lawrence County, Tennessee

Tornado April 27, 2011 · Lawrence County, Tennessee

EF1
Rating
2.7 mi
Path length
150 yd
Path width
1
Injury
$11K
Damage as recorded
$75K
Crop damage
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 150 yards (0.09 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

The tornado first touched down near the intersection of Gresham and Moore Roads and lifted near the intersections of State Highways 240 and U.S. Highway 43. Hundreds of trees were snapped and several building suffered damage. A man suffered minor injuries when part of his home on Gresham Road collapsed.

The wider storm

During the early morning hours on Wednesday, April 27th, twelve tornadoes occurred across Middle Tennessee. Seven of these were EF0 tornadoes and five of these were EF1 tornadoes. Numerous thunderstorm wind damage events, along with several flash flooding events, occurred across the mid state also. This severe weather outbreak was the result of a very unstable airmass across Middle Tennessee ahead of a strong frontal system, with a warm front positioned near the Tennessee/Alabama border. As this frontal system pushed across the area through the remainder of the morning through the early evening hours, several thunderstorm wind and flash flood events also occurred as additional severe thunderstorms developed.

Began near Summertown (35.4121, -87.3206).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 302282. Narratives are written by the National Weather Service forecast office that issued the report.

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