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EF1 tornado in Atoka County, Oklahoma

Tornado May 9, 2016 · Atoka County, Oklahoma

EF1
Rating
13.0 mi
Whole path
900 yd
Path width
$40K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 900 yards (0.51 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 tornado develop approximately 12 miles west-northwest of Atoka, near Blue Ribbon Road and less than one mile south of the Coal County line. An outbuilding was destroyed along Blue Ribbon Road. Although the center of circulation remained on the Atoka County side of the county line until moving into Coal County one-third of a mile west of US-75, the north side of the tornado expanded into Coal County before reaching NS376 Road as the tornado continue to produce tree damage across both counties.

The wider storm

With the help of an upper low, storms fired along the dryline in central Oklahoma on the 9th, with some of them becoming severe.

Began near Boggy Depot State Park (34.4080, -96.3410).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 633092. Narratives are written by the National Weather Service forecast office that issued the report.

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