EF0 tornado in Mackinac County, Michigan

Tornado May 23, 2011 · Mackinac County, Michigan

EF0

Rating

2.4 mi

Whole path

50 yd

Path width

NOAA records this tornado county by county. Its path ran through Luce County → Mackinac County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 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

The waterspout formed from an otherwise unimpressive rain shower on the Helmer Bay portion of Manistique Lake in Luce County. It drifted south, crossing into Mackinac County, and soon dissipated over the southeastern portion of the lake.

The wider storm

Scattered rain showers developed over Upper Michigan on the afternoon of the 23rd. These did not get especially strong, but one managed to produce a waterspout.

Began near Manistique Lake (46.2446, -85.7370).

Source: NOAA Storm Events Database, event 340243. Narratives are written by the National Weather Service forecast office that issued the report.

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