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EF0 tornado in Jefferson County, Alabama

Tornado April 27, 2011 · Jefferson County, Alabama

EF0
Rating
20.3 mi
Whole path
105 yd
Path width
$9.3M
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 105 yards (0.06 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

This tornado developed along a Quasi-Linear Convective System in southeast Tuscaloosa County, near Coaling and moved northeastward for approximately 18 miles. It crossed into Jefferson County between Interstate 20 and Bucksville and continued for nearly 2 miles into Jefferson County. The tornado weakened as it entered Jefferson County near Tingle Springs Circle to an EF0 and its path width gradually became less until the tornado lifted near the intersection of Old Tuscaloosa Highway and Lowetown Rd. Along its path in Jefferson County, the tornado caused tree damage.

The wider storm

A powerful storm system crossed the Southeast United States on Wednesday, April 27, 2011, resulting in a large and deadly tornado outbreak. This epic event broke the record for number of tornadoes in a day for the state of Alabama, becoming the most significant tornado outbreak in the state's history.

Central Alabama had two rounds of severe weather that day. During the early morning hours, a Quasi-Linear Convective System quickly moved across the northern half of the National Weather Service, Birmingham county warning area. Straight line winds of 90 mph (78kts) or greater and 11 tornadoes lead to widespread damage and power outages. During the afternoon, long-lived supercell thunderstorms produced long-track, strong and violent tornadoes. Destruction and loss of life across many towns and communities was devastating.

The hardest hit areas included Shottsville and Hackleburg, both in Marion County, where winds of 160 mph and 210 mph respectively, caused unimagineable damage. Cordova, in Walker County, was hit twice; by a tornado along the Quasi-Linear Convective System during the early morning hours and again in the afternoon by a long-track EF4 tornado. A long track tornado moved across the city of Tuscaloosa and the western suburbs of Birmingham, resulting in the complete destruction of whole neighborhoods and numerous injuries and fatalities in those heavily populated areas. The same parent supercell produced another violent tornado in east Central Alabama as it tracked across St. Clair and Calhoun Counties, resulting in additional fatalities and incredible damage to a number of neighborhoods. Another violent EF4 tornado tracked across portions of Elmore and Tallapoosa Counties, including Lake Martin, destroying numerous homes and a large section of a mobile home park.

Most of the violent tornadoes from this day were captured on video by a number of people, including storm spotters and chasers, as well as numerous television news crews and remotely controlled web-enabled video cameras. This allowed unprecedented coverage and viewing of this historic event in real time from people worldwide.

Began near Kimbrel (33.2824, -87.0875).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 311604. Narratives are written by the National Weather Service forecast office that issued the report.

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