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EF1 tornado in Elmore County, Alabama

Tornado May 4, 2021 · Elmore County, Alabama

EF1
Rating
10.6 mi
Whole path
330 yd
Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 330 yards (0.19 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 extreme southwest Elmore County and determined that it was consistent with an EF1 tornado, with maximum winds near 100 mph. This tornado began in Autauga County and crossed into Elmore County near Castle Brook Drive. Soon after crossing into Elmore County, the tornado made a turn to the southeast at Old Farm Road and crossed over I-65. The tornado produced its highest winds along the I-65 corridor where numerous trees were uprooted and snapped. Some homes were heavily damaged by fallen trees. The tornado continued southeast and crossed Cobbs Ford Road where some buildings had loss of metal roofing. The tornado then crossed Alabama River Parkway before crossing into Montgomery County at the Alabama River.

The wider storm

A multi-day severe weather event unfolded across Central Alabama from May 2nd through May 4th. Alabama remained on the eastern side of a broad upper trough positioned over the Plains States. Several upper level impulses emanated from the trough axis and produced severe weather across Alabama. The main severe weather event occurred on May 4th when a QLCS tracked eastward across areas along and east of I-20 and produced widespread wind damage, flash flooding, and tornadoes.

Began near Millbrook (32.4690, -86.4120).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 957987. Narratives are written by the National Weather Service forecast office that issued the report.

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