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EF1 tornado in Chambers County, Alabama

Tornado April 5, 2017 · Chambers County, Alabama

EF1
Rating
2.0 mi
Path length
125 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 125 yards (0.07 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 northwestern Chambers County and determined that the damage was consistent with an EF1 tornado, with maximum sustained winds near 90 mph. The tornado touched down along CR 116 just west of the Union Hill community where several trees were uprooted and large branches were snapped. The tornado continued east, crossing CR 123, where a barn sustained minor damage and several additional trees were snapped. Adjacent to CR 123 and CR 53, a small fire station, barn and additional trees sustained significant damage. The tornado lifted just beyond CR 53, east of Union Hill where more trees were observed to have minor damage.

The wider storm

April 5th was a very active severe weather day across central Alabama. During the pre-dawn hours, a warm lifted northward into south central Alabama. Supercells formed along the advancing warm front, producing numerous reports of large hail and a few reports of wind damage and isolated tornadoes. A second round of severe storms developed during the afternoon and evening as an upper level short wave trough approached the area from the west.

Began near Besworth (33.0037, -85.5402).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 693194. Narratives are written by the National Weather Service forecast office that issued the report.

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