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EF3 tornado in Johnston County, Oklahoma

Tornado May 9, 2016 · Johnston County, Oklahoma

EF3
Rating
9.1 mi
Whole path
700 yd
Path width
1
Death
$250K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 700 yards (0.40 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF3 means. On the Enhanced Fujita scale, EF3 is severe damage: whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, consistent with estimated gusts of 136–165 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 formed near US-377/OK-99 in northern Johnston County about 4 miles south of Connerville. The tornado damage trees and power poles, and caused roof damage to a home as it crossed Tower Road. Passing Deadman Spring Road, the tornado destroyed a modular home where the fatality occurred. A truck parked at this house was carried 250 yards to the east. The tornado continued moving east-northeast with more tree damage, and light damage to a couple of houses at the edge of the tornado path. Fortunately as the tornado had weakened as it approached the town of Bromide with only light tree damage observed there.

From about 1.25 miles west of Bromide to where it dissipated just east of Bromide, the tornado moved down the Johnston-Coal county line affecting both counties. The center line of the tornado moved into Coal County in Bromide.

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 Connerville (34.3910, -96.6380).

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 633089. Narratives are written by the National Weather Service forecast office that issued the report.

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