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EF0 tornado in Perry County, Illinois

Tornado June 8, 2009 · Perry County, Illinois

EF0

Rating

0.4 mi

Path length

100 yd

Path width

$4K

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

A small shed was overturned. Several trees and limbs were downed. Peak winds were estimated near 70 mph in this small tornado.

The wider storm

Thunderstorms rapidly developed along a surface frontal boundary from central Illinois into southern Missouri. Extreme instability and favorable wind shear ahead of the activity promoted organized and isolated supercell storms.

Began near Sunfield (38.0985, -89.2646).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF1 Perry County

Source: NOAA Storm Events Database, event 171900. Narratives are written by the National Weather Service forecast office that issued the report.

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