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EF0 tornado in Montgomery County, Alabama

Tornado March 17, 2021 · Montgomery County, Alabama

EF0
Rating
0.3 mi
Path length
140 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 140 yards (0.08 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 eastern Montgomery County and determined that it was consistent with an EF0 tornado, with maximum winds near 80 mph. The short-lived tornado touched down on the east side of Highway 231 just north of County Road 72. The tornado produced damage on a farmstead, uprooting trees in the front yard, destroying a playhouse and trampoline. A tree fell on the house, damaging the roof. Additional structural damage was also noted to the roof mainly in form of shingle loss. The tornado continued northeast across the property uprooting mainly softwood trees with some sporadic snapping of trees along its path. The tornado lifted near the back pastureland.

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 Pine Level (32.1279, -86.0797).

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 945132. Narratives are written by the National Weather Service forecast office that issued the report.

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