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EF0 tornado in Coosa County, Alabama

Tornado March 14, 2019 · Coosa County, Alabama

EF0
Rating
11.9 mi
Whole path
350 yd
Path width

NOAA records this tornado county by county. Its path ran through Chilton County → Coosa County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 350 yards (0.20 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 Coosa County and determined that it was consistent with an EF0 tornado, with maximum sustained winds near 85 mph. This tornado was a continuation of a track from Chilton County.

The tornado crossed Lay Lake near County Road 55. It produced tree damage along Coosa County Road 125. Due to sub-par road conditions and gated roadways, the survey team was not able to follow any further damage into the heavily forested area. Based on an increasingly broad mesocyclone on radar and a dissipating TDS, the tornado was terminated within the forested area northeast of Little Tom Road.

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 Marble Vly (32.9551, -86.5154).

Other tornadoes from the same storm system

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

EF2 Elmore CountyEF1 Blount CountyEF1 Perry CountyEF1 Autauga CountyEF0 Blount CountyEF0 Tuscaloosa CountyEF0 St. Clair CountyEF0 Perry CountyEF0 Calhoun CountyEF0 Marengo CountyEF0 Perry CountyEF0 Coosa CountyEF0 Randolph County

Source: NOAA Storm Events Database, event 815061. Narratives are written by the National Weather Service forecast office that issued the report.

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