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EF1 tornado in Green County, Kentucky

Tornado December 11, 2021 · Green County, Kentucky

EF1
Rating
23.8 mi
Whole path
528 yd
Path width
1
Injury

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 528 yards (0.30 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

This tornado formed approximately 1.6 miles west southwest of Rowletts near L and N Turnpike Road and tracked northeast for approximately 14.2 miles before exiting Hart County and into western Green County. In Green County, tree and limited building damage was determined to be EF1 and EF0 from the Hart County line through Summersville. The tornado lifted northeast of Summersville near Summersville Road.

The wider storm

Strong southern winds brought warm temperatures and plenty of moisture into an environment of strong wind shear ahead of an advancing cold front. This resulted in unusually warm temperatures for a December day and the ingredients to produce a historic tornado outbreak and flash flooding. This included multiple long track tornadoes. Central Kentucky saw 18 tornadoes that injured 96 and killed 18. An additional death occurred in a flash flood.

Began near Eve (37.2890, -85.6830).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 997242. Narratives are written by the National Weather Service forecast office that issued the report.

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