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EF1 tornado in Winston County, Alabama

Tornado April 11, 2013 · Winston County, Alabama

EF1
Rating
2.6 mi
Path length
250 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 250 yards (0.14 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

National Weather Service meteorologists surveyed the damage in Winston County and have determined that the damage was due to an EF-1 tornado, with winds of 110 mph. The tornado touched down in a wooded, rural area west of County Road 21 and east of Indian Creek. The tornado tracked northeast and generally parallel to County Road 21. A hardwood tree snapped and fell on a mobile home near the beginning of the path on County Road 21. Additionally, the tornado snapped and uprooted dozens of trees beyond a strip mine area. The tornado completely removed the roof of a 50 to 60 year old home, damaged another nearby residence, and snapped and uprooted several more trees, one of which crushed a small produce stand. The tornado continued northeast where it demolished a large shed in the parking lot of another strip mine, and damaged the mine office.The tornado then crossed Highway 195 where it toppled more trees which fell onto nearby residences. The tornado lifted east of Highway 195 before it reached County Road 8.

The wider storm

Severe thunderstorms ahead of and along a cold front moved across Central Alabama on Thursday, April 11th. Storms along the cold front formed into a quasi-linear convective system, causing wind damage and producing seven tornadoes across the area. Ahead of the line, strong daytime heating and increasing instabilities coupled with strong diffluence aloft created prime conditions for discrete thunderstorms to form. These storms caused wind damage across portions of northeast Central Alabama during the late afternoon.

Began near Poplar Spgs (34.0128, -87.4332).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 449840. Narratives are written by the National Weather Service forecast office that issued the report.

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