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EF1 tornado in Boyle County, Kentucky

Tornado December 11, 2021 · Boyle County, Kentucky

EF1
Rating
14.9 mi
Whole path
400 yd
Path width

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

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

The tornado began near Morning Pointe of Danville along Perryville Road just south of Millennium Park, where significant roof damage occurred to a church and a gas station. Several trees were also uprooted and snapped at this location. The tornado continued through neighborhoods along West Lexington Avenue where tree and roof damage occurred. The tornado continued to produce tree and roof damage to homes between Caldwell Manor and Bellvue Cemetery before crossing Highway 2168. The tornado continued near Waterworks Road with destruction of a barn and roof damage to a residence nearby,. No damage was observed beyond Waterworks 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 Danville (37.6459, -84.7908).

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 996917. Narratives are written by the National Weather Service forecast office that issued the report.

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