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EF1 tornado in Grady County, Oklahoma

Tornado May 23, 2015 · Grady County, Oklahoma

EF1
Rating
6.0 mi
Path length
500 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 500 yards (0.28 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 tornado was shown live from a KOCO TV helicopter near Pocasset. Emergency management reports four houses damaged by this tornado (DI 2, up to DOD 4).

The wider storm

Storms developed in the panhandles on the 23rd under the influence of an upper level trough. These storms merged into a line and moved eastward over Oklahoma producing widespread flooding.

Began near Pocasset (35.1900, -98.0031).

Other tornadoes from the same storm system

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

EF1 McClain CountyEF1 Garvin CountyEF1 Pontotoc CountyEF0 Murray CountyEF0 Pontotoc CountyEF0 Murray CountyEF0 Garvin CountyEF0 McClain CountyEF0 Hughes County

Source: NOAA Storm Events Database, event 584400. Narratives are written by the National Weather Service forecast office that issued the report.

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