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EF1 tornado in Marquette County, Michigan

Tornado June 8, 2012 · Marquette County, Michigan

EF1

Rating

7.8 mi

Path length

200 yd

Path width

$10K

Damage as recorded

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

The tornado snapped or uprooted numerous large trees causing some backroads in rural western Marquette County to become impassable. The tornado was classified as an EF-1 with max winds estimated at 95 mph.

The wider storm

A very warm and unstable airmass produced a few severe thunderstorms over Baraga and Marquette counties on the evening of the 8th. Some of these storms produced golf ball sized hail in the Marquette area, and a tornado occurred southwest of Big Bay at Eagle Mine. Storms also produced heavy rain over portions of central Upper Michigan from the evening of the 8th into the morning of the 9th.

Began near Huron Mtn (46.7800, -88.0300).

Source: NOAA Storm Events Database, event 387559. Narratives are written by the National Weather Service forecast office that issued the report.

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