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EF1 tornado in Boyle County, Kentucky

Tornado December 11, 2021 · Boyle County, Kentucky

EF1
Rating
14.9 mi
Whole path
950 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 950 yards (0.54 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 2 miles north of Clifton near Kings Ridge Road and tracked northeast for approximately 0.9 miles before crossing into northern Garrard County. The tornado continued approximately 2.1 miles into Garrard County before dissipating at 0411 EST. In Boyle County, The tornado began near the Old Bridge Golf Club where trees were uprooted and branches were broken. Then, the tornado crossed Herrington Lake into Garrard County.

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 Clifton (37.6780, -84.6940).

Other tornadoes from the same storm system

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

EF4 Mayfield Tornado (2021) 58 deadEF3 Bowling Green Tornado (2021) 17 deadEF3 Taylor County 1 deadEF3 Logan CountyEF2 Warren CountyEF2 Hart CountyEF1 Hardin CountyEF1 Spencer CountyEF1 Marion CountyEF1 Madison CountyEF1 Madison CountyEF0 Monroe County

Source: NOAA Storm Events Database, event 997260. Narratives are written by the National Weather Service forecast office that issued the report.

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