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EF1 tornado in Marion County, Kentucky

Tornado June 23, 2017 · Marion County, Kentucky

EF1
Rating
2.1 mi
Path length
100 yd
Path width
$150K
Damage as recorded
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

This tornado spun up in a broader area of 40-60 mph winds that caused minor tree damage across an area over a mile wide in western Marion County. The tornado touched down on the edge of a large wooded area west of Highway 527 0.4 miles south of St Francis. Moving due east, it snapped the trunks of several large trees, blocking the highway, and mowed down a line of trees along Louis Mattingly Road. It continued to to tree-top damage in a heavily wooded area as it moved east, then tore roof panels off several hog barns on the south end of A. Mills Road. Drone footage of corn near the barns showed multiple streaks of converging winds in an area approximately 100 yards in width. Continuing to east-southeast, the tornado left downed numerous more trees in a cyclonic pattern on both sides of Spencer-Hamilton Road south of Loretto. Strong inflow and outflow winds estimated at 60-80 mph damaged several outbuildings and downed other trees south of the tornado along Spencer-Hamilton Road as the tornado dissipated. The Louisville NWS office thanks John Humphress and Tanner Thompson for the drone imagery that helped pinpoint the path of this rural tornado.

The wider storm

Tropical Storm Cindy made landfall along the Gulf Coast and quickly lifted northeast toward the lower Ohio Valley June 22-23. The remnants interacted with a cold front from the Upper Midwest to produced widespread heavy rainfall. The unseasonably moist air mass led to widespread rainfall amounts of 1-2 inches with an embedded swath of 3-6 inches across central Kentucky. This led to numerous reports of flash flooding with some swift water rescues occurring as well. Multiple roads across many counties were closed for a period of time due to the high water. Three river points rose into minor flood, mainly across the Bluegrass region. In addition, several strong to severe thunderstorms tracked across the area which brought down numerous trees and power poles. The environment also supported short spin-up tornadoes and 2 did touch down across central Kentucky.

Began near St Francis (37.6177, -85.4359).

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 702413. Narratives are written by the National Weather Service forecast office that issued the report.

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