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EF1 tornado in Graves County, Kentucky

Tornado February 24, 2018 · Graves County, Kentucky

EF1
Rating
8.3 mi
Whole path
125 yd
Path width
$450K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 125 yards (0.07 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 EF-1 tornado touched down about 1 mile southwest of Bell City and moved northeast across Highway 97 into Calloway County. The majority of the path and associated damage occurred in Calloway County. In the Graves County portion, a few barns were damaged or destroyed. A house sustained minor damage. Many dozens of trees, some very large, were snapped or uprooted. At least one eyewitness observed the tornado. A convergent damage pattern consisting of dozens of very large uprooted trees was visible from Kentucky Highway 97. Peak winds were estimated near 100 mph. The tornado path continued into Calloway County.

The wider storm

An outbreak of severe thunderstorms and tornadoes occurred across western Kentucky. Most of the severe weather was along and south of a Paducah to Madisonville line. North of that line, serious flash flooding resulted in a fatality. A surface low pressure center tracked rapidly north-northeast from Arkansas to the upper Mississippi Valley, dragging a warm front north across western Kentucky. Instability was adequate for tornadoes and severe storms in the presence of very strong wind shear. A very moist air mass resulted in heavy rainfall, which produced localized flash flooding due to the water-logged ground. Locally 5 to 6 inches of rain had fallen over the previous week. Rainfall rates in these thunderstorms were locally one-half to one inch per hour.

Began near Bell City (36.5163, -88.5217).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 735571. Narratives are written by the National Weather Service forecast office that issued the report.

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