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EF1 tornado in Dekalb County, Alabama

Tornado April 29, 2014 · Dekalb County, Alabama

EF1
Rating
10.2 mi
Path length
200 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 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

A tornado touched down south of Mentone along the Desoto Parkway (CR 89) just south of the intersection with CR 165. Here, several large cedar trees were snapped. The tornado moved northeast, paralleling the western side of CR 165. Mainly tree damage was noted in this area, with minor structural damage to barns and outbuildings. Several stands of old growth hardwoods were damaged here.

The tornado seemed to weaken briefly with only minor tree damage noted near downtown Mentone. Further up the slopes of Lookout Mountain, the tornado strengthened again to EF-1 intensity with speeds up to 105 mph, with sporadic swaths of hardwood trees snapped or uprooted, all along the eastern side of CR 89, before lifting just inside the state line.

The wider storm

A tornado outbreak occurred during the late afternoon and evening across the central Tennessee Valley on the 28th. Several cyclic supercells produced tornadoes, some of which were strong. Very heavy rainfall occurred in some areas as well. In particular, up to 5 inches fell in just a few hours which led to severe flash flooding in Valley Head.

An additional round of thunderstorms late in the day/evening of the 29th produced a few reports of damaging winds and hail.

Began near River Park (34.5048, -85.6174).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 505654. Narratives are written by the National Weather Service forecast office that issued the report.

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