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EF0 tornado in Blount County, Alabama

Tornado March 14, 2019 · Blount County, Alabama

EF0
Rating
2.6 mi
Path length
115 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 115 yards (0.07 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

National Weather Service meteorologists surveyed damage in Blount County and determined that it was consistent with an EF0 tornado, with maximum sustained winds near 65 mph.

The tornado touched down along Tim King Road with several soft and hardwood trees uprooted. It tracked northeast and into a valley region. Many locations throughout the valley were inaccessible due to the terrain. The tornado moved into slightly higher ground as it lifted before reaching Sawyer Mountain Road, with additional tree damage and damage to a porch structure on a well-built single family home.

The wider storm

A widespread severe weather event occurred across central Alabama aduring the afternoon and evening hours on Thursday, March 14th. The event began in the northwest counties and spread eastward all the way to the Georgia state line. A strong low level jet of 40-50 knots, combined with moderate instability (1000-1500 J/kg) and 0-6km bulk shear of 55-50 knots, produced an atmosphere favorable for severe thunderstorms and supercells.

Began near Allgood (33.9256, -86.5439).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 814880. Narratives are written by the National Weather Service forecast office that issued the report.

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