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EF0 tornado in Graves County, Kentucky

Tornado April 18, 2013 · Graves County, Kentucky

EF0

Rating

3.2 mi

Path length

100 yd

Path width

$3K

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 EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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

Several large branches were blown down. The average damage path width was 100 yards and the peak winds were 75 mph.

The wider storm

Small, low-topped thunderstorm line segments moved northeast in a region of strong vertical wind shear and very weak instability. These line segments produced a few short-track, weak tornadoes and isolated wind damage. The tornadoes formed from mesovortices embedded within the line. There was little if any lightning associated with the convection. The storms occurred along a cold front that extended southward from a low pressure center in northern Illinois.

Began near Sedalia (36.6065, -88.6542).

Other tornadoes from the same storm system

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

EF0 Graves County EF0 Graves County

Source: NOAA Storm Events Database, event 439512. Narratives are written by the National Weather Service forecast office that issued the report.

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