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EF0 tornado in Kay County, Oklahoma

Tornado May 13, 2009 · Kay County, Oklahoma

EF0
Rating
0.2 mi
Path length
100 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

NOAA recorded where this tornado touched down but not where it lifted, so it appears as a point. 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 tornado developed nine miles south of Nardin and remained nearly stationary before dissipating. No damage to structures were reported with the tornado.

The wider storm

A cold front moved south into Oklahoma during the evening of the 13th and early on the 14th. Widespread thunderstorms developed over much of the eastern two thirds of Oklahoma. Deep moisture and favorable atmospheric conditions allowed for thunderstorms to become severe along and south of the cold. A strong cap over western Oklahoma didn't allow for much development, although thunderstorms were able to develop west during the late evening hours. All forms of severe weather developed as several supercell thunderstorms developed. Hail up to baseball size, wind gusts over 60 mph, and four tornadoes were reported as the evening progressed. Damage was reported, especially with the tornadoes. The worst damage was reported with a tornado that moved from Gracemont to near Anadarko. Luckily, no injuries were reported with any of the damage.

Began near Nardin (36.6797, -97.4500).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 175479. Narratives are written by the National Weather Service forecast office that issued the report.

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