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EF1 tornado in Tuscaloosa County, Alabama

Tornado March 17, 2021 · Tuscaloosa County, Alabama

EF1
Rating
3.5 mi
Path length
650 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 650 yards (0.37 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 damage in eastern Tuscaloosa County and determined that it was consistent with an EF1 tornado, with maximum winds near 100 mph. The tornado touched down along Lock 17 Road near Warrior Met Coal. The tornado tracked north-northeasterly and produced significant timber damage. Damage was also sustained to a metal warehouse on Davis Road where siding and roofing material was lofted east to west into the tree line. Downstream, a long corridor of significant timber damage was observed along with minor damage to a communications tower near the intersection of Hannah Creek Road and Searles Road. The tornado continued north-northeast across a mostly inaccessible wooded area where the last point of observable damage occurred at the end of Alabama Junction.

The wider storm

An active southern jet stream set-up across the southern United States during the middle of March. Several short-wave troughs became negatively tilted as each one traversed across Texas and towards Alabama. This resulted in a single hail event one Monday, March 15, and significant tornado outbreak on Wednesday, March 17. Many supercells began to develop across Central Alabama by midday Wednesday and continued into the evening hours before a squall line moved through the state. Sufficient instability and strong wind shear produced conditions favorable for tornadoes to develop. The event consisted of twenty-one tornadoes in the NWS Birmingham forecast area.

Began near Brookwood (33.2887, -87.2997).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 944937. Narratives are written by the National Weather Service forecast office that issued the report.

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