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EF1 tornado in Cheboygan County, Michigan

Tornado October 18, 2007 · Cheboygan County, Michigan

EF1
Rating
10.2 mi
Path length
215 yd
Path width
$30K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 215 yards (0.12 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 produced sporadic damage, mainly to trees, as it tracked across eastern Cheboygan County. One barn was destroyed just north of M-68, west of the community of Tower. The tornado moved out over Black Lake, where it was photographed from the shoreline, just before dissipating. Winds were estimated at 95 mph, making it an EF1.

The wider storm

An historic tornado outbreak rocked Northern Lower Michigan on the afternoon and evening of October 18th. The day started out cool and rainy, but a dry slot aloft allowed sunshine to break out in the afternoon. Temperatures rose into the lower to middle 70s in parts of the area. The warm and humid air was unstable enough to fuel multiple rounds of thunderstorms in the late afternoon and evening hours. There was a tremendous amount of shear in the atmosphere, and many storms quickly became supercells with rotating updrafts. This was an environment conducive to tornadoes, as several lines of discrete supercells crossed Northern Lower Michigan.

Northern Lower Michigan had a record six tornadoes on the day. The previous high was five, set on June 17 1992. Unfortunately, the Kalkaska tornado produced a fatality. That was the first tornado fatality in Northern Lower Michigan since March 30 1976, when a single death occurred in Ogemaw County.

Began near Tower (45.3500, -84.3927).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 64006. Narratives are written by the National Weather Service forecast office that issued the report.

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