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EF1 tornado in Blount County, Alabama

Tornado April 28, 2014 · Blount County, Alabama

EF1
Rating
7.8 mi
Path length
1,000 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 1,000 yards (0.57 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

The tornado touched down near the intersection of Boat Landing Road and Seven Mile Road, about 4 miles south-southwest of the city of Oneonta, where it damaged and uprooted several trees. From there the tornado moved northeastward, paralleling the ridge of Straight Mountain the entire time it was on the ground. It remained over largely rural areas for much of its path and broadened to 1000 yards wide just after crossing US-231 as it strengthened with winds of 105 mph. Damage along US-231 consisted of mainly snapped pines and uprooted hardwoods. There was minor damage to a few homes and buildings in the area, although one chicken barn was heavily damaged. The tornado moved north-northeastward across Wadsworth Road and continued to cause widespread tree damage. It tracked along Airport Road continuing to down trees and cause predominantly minor roof damage to homes and significant damage to outbuildings and hay barns. The only exception was a small older home that sustained significant damage. The tornado maintained its strength as it crossed County Road 20, Lowes Road, and finally Airport Road once again before dissipating rapidly at the airport.

The wider storm

A large scale severe weather event began Saturday, April 26 and ended Wednesday, April 30th, producing several waves of severe weather from the Central Plains eastward through the Deep South, and across a significant portion of the eastern United States. Strong and violent tornadoes, very large hail, flash flooding, and damaging straight line winds accompanied this dynamic storm system. The most tornadoes occurred across the Deep South as the system moved into Mississippi and Alabama on Monday, April 28th. Supercell thunderstorms developed during the afternoon over eastern Mississippi and northwest Alabama in the warm sector well ahead of a cold front. The activity slowly spread east and southeast overnight, with this wave of severe storms ending early Tuesday morning. Storms redeveloped late Tuesday afternoon and moved into Central Alabama. A large area of rainfall across the northern Gulf Coast limited the amount of instability across the area, and storms remained below severe limits. The last wave of severe weather occurred early Wednesday morning across the south as an isolated storm produced large hail, as the system finally pulled east of the area.

Began near Allgood (33.8908, -86.4871).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 523223. Narratives are written by the National Weather Service forecast office that issued the report.

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