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EF3 tornado in Oklahoma County, Oklahoma

Tornado May 6, 2015 · Oklahoma County, Oklahoma

EF3
Rating
2.0 mi
Path length
700 yd
Path width
12
Injuries
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

A tornado touched down near Southeast 59th Street and Eastern Avenue in Oklahoma City, and moved north along Eastern Avenue, then northwest crossing Interstate 35 near and south of Southeast 44th Street before turning west and dissipating near Southeast 44th Street and Lindsay Avenue. The most significant damage occurred just east of Interstate 35 where a motel sustained significant damage losing most walls on the second floor (DI 6, DOD 8) and significant damage to many recreational vehicles at an adjacent RV park. While not directly related to the tornado, one woman perished while seeking shelter from the tornado in a below ground storm cellar. Heavy rains flooded the cellar, and the woman drowned.

The wider storm

A potent Spring storm system took shape across the Southern and Central Plains. Strong surface cyclogenesis took shape during the day, allowing ample moisture to return northward with strong southerly flow. At the same time, a strong upper level shortwave trough allowed strong mid level westerlies to overspread much of the Plains region. With large instability and wind shear, the stage was set for widespread severe storm development. Storms initiated within the open warm sector ahead of the dryline. The first storm developed near Lawton and moved northeast along I-44 into parts of central Oklahoma, resulting in several tornadoes and large hail. Additional supercells spawned tornadoes across northern Oklahoma, and the slow moving nature of storms lead to several occurrences of flash flooding. Storms continued well into the night.

Began near Valley Brook (35.4061, -97.4769).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 581866. Narratives are written by the National Weather Service forecast office that issued the report.

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