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Tornado in Johnston County, Oklahoma

Tornado May 9, 2016 · Johnston County, Oklahoma

–
Not rated
1.5 mi
Path length
20 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 20 yards (0.01 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

Not rated. NOAA lists no rating for this tornado. Ratings come from surveying damage, and the National Weather Service now records “EFU” (unknown) when a tornado hit nothing a survey team could rate.

What the National Weather Service wrote

A mini-supercell that developed between the Katie-Sulphur storm and the Bromide-Atoka storm produced a tornado in northern Johnston County that was observed by spotters and chasers, including an NWS employee, and broadcast live on Oklahoma City television by a media helicopter. The tornado occurred in open grassland on a ranch and produced no damage. The specific path could be determined by the proximity to landmarks observed on the helicopter footage.

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 Mill Creek (34.4800, -96.7550).

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 633090. Narratives are written by the National Weather Service forecast office that issued the report.

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