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EF1 tornado in Colbert County, Alabama

Tornado November 29, 2016 · Colbert County, Alabama

EF1
Rating
10.9 mi
Whole path
100 yd
Path width
3
Injuries

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 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 crossed into Colbert County from Franklin County. More softwood and hardwood trees were snapped causing damage to a single wide manufactured home and car shed on Jones Road. More softwood and hardwood trees were snapped as the tornado continued northeast across County Road 49. Then, as the tornado continued to move northeast multiple softwood and hardwood trees were snapped close to Underwood Mountain Road before striking a single wide manufactured home. The single wide manufactured home sustained damage consistent with EF-1 rating with destruction of roof and walls leaving floor and undercarriage in place. Two people within this home sustained injuries. Another single family dwelling next to this manufactured home sustained damage uplift of the roof damage while more snapped hardwood trees were noted just to the northeast of these houses. This is also where the tornado had the largest width of 100 yards. The tornado then lifted shortly after this damage occurred.

The wider storm

A tornado outbreak occurred during the evening hours of the 29th into the early morning hours of the 30th. A very mild and unstable air mass was in place along with a strong southwesterly upper level jet. These ingredients combined with a cold front and pre-frontal trough sweeping from west to east across the area sparked scattered supercell thunderstorms during the evening, a few of which were tornadic. This was followed by a quasi-linear convective system (QLCS) that occurred with the trough, which also was responsible for severe weather. Beneficial rainfall occurred with this system with 2-5 inches reported. Some of the rainfall fell fast enough to produce brief flash flooding in the Florence area during the evening.

Began near Crooked Oak (34.5734, -87.8457).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 661843. Narratives are written by the National Weather Service forecast office that issued the report.

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