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EF1 tornado in Oklahoma County, Oklahoma

Tornado May 19, 2013 · Oklahoma County, Oklahoma

EF1
Rating
0.5 mi
Path length
200 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 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 brief tornado was observed just northeast of Lake Arcdia. The tornado damaged a power pole along Post Road just north of State Highway 66, otherwise no known damage occurred.

The wider storm

A moist and very unstable airmass was in place over the eastern two thirds of Oklahoma, to the east of a dryline. Additionally, strong wind shear was present as a mid-level jet streak carved into the southern Plains. Several supercells developed along the dryline during the mid and late afternoon hours, producing large hail. Two supercells in central Oklahoma also produced tornadoes, including a few significant, damaging tornadoes.

Began near Arcadia Lake (35.6534, -97.3621).

Other tornadoes from the same storm system

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

EF4 Pottawatomie County 2 deadEF3 Oklahoma CountyEF2 Pottawatomie CountyEF1 Oklahoma CountyEF1 Lincoln CountyEF0 Pottawatomie County

Source: NOAA Storm Events Database, event 451524. Narratives are written by the National Weather Service forecast office that issued the report.

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