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EF1 tornado in Perry County, Indiana

Tornado October 18, 2007 · Perry County, Indiana

EF1
Rating
8.2 mi
Path length
200 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 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

A thunderstorm that had earlier produced a tornado in Daviess and Hancock Counties in Kentucky crossed the Ohio River near Hawesville, Kentucky. It produced an EF-1 tornado which touched down just northeast of Cannelton in Perry County, Indiana. Witnesses reported seeing a visible tornado intermittently lifting and touching back down as it moved northeast across the county, snapping and uprooting trees along its path. Most of the damage occurred near a Girl Scout camp on Cann Heights Road about two and a half miles northeast of Cannelton. The tornado ended near Plock Knob in southern Perry County, but the parent storm continued to produce intermittent wind damage across the southern part of the county.

The wider storm

A cold front with strong upper level support collided with a very moist air mass over the lower Ohio Valley. Widespread severe thunderstorms resulted, along with three confirmed tornadoes in south central Indiana. The severe storms and tornadoes produced property damage, widespread areas with downed trees and power lines, and some large hail.

Began near Cannelton (37.9147, -86.7302).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 57774. Narratives are written by the National Weather Service forecast office that issued the report.

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