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EF1 tornado in Marengo County, Alabama

Tornado February 6, 2020 · Marengo County, Alabama

EF1
Rating
1.3 mi
Path length
400 yd
Path width
1
Death
1
Injury
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 400 yards (0.23 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 northern Marengo County and determined that it was consistent with an EF1 tornado, with maximum winds near 110 mph. The tornado touched down southeast of Demopolis, west of U.S. Highway 43. The tornado tracked northeast and produced damage near Starmont Lane and Orchard Drive. Several trees were uprooted or were snapped off. Two homes suffered minor damage. The most concentrated damage occurred at U.S. Highway 43 near County Road 54. This is the location where two manufactured homes were destroyed and two homes were damaged. The one injury and the one fatality occurred in the manufactured home that was totally destroyed. Several trees were blown down in this location as well. The tornado continued across U.S. Highway 43 where it destroyed a barn and uprooted many more trees. The tornado then lifted before it crossed French Creek.

The wider storm

Heavy rainfall and severe storms affected Central Alabama on February 5th and 6th as several impulses emanated from a deep upper trough centered over the central United States. This event yielded tornadoes, damaging winds, and flooding.

The northward progression of a warm front allowed a seasonably warm and moist air mass to overspread the region on Wednesday, February 5th, with afternoon temperatures in the 70s and dew points in the 60s. The initial round of convection on this day included areas of rain with embedded thunderstorms producing gusty winds as well as hail. There was a relative lull in thunderstorm activity during Wednesday evening, before the next upper-level impulse arrived, alongside a cold front and nearby surface low. This round of activity began its formation to the west in Mississippi and then moved through Alabama late Wednesday night through midday Thursday, February 6th. This round of convection produced widespread moderate to heavy rainfall, resulting in more substantial flooding. Some storms became tornadic due to the favorable wind shear and instability in place, while others produced damaging straight-line winds. Due to the overall wet and breezy conditions, trees fell in numerous locations from wind not associated with thunderstorms.

Began near Old Spring Hill (32.4617, -87.8012).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 878237. Narratives are written by the National Weather Service forecast office that issued the report.

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