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EF0 tornado in Apache County, Arizona

Tornado October 21, 2010 · Apache County, Arizona

EF0

Rating

0.8 mi

Path length

20 yd

Path width

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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.

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

A tornado was observed touching down between Cottonwood and Blue Gap. Trees and bushes were knocked down.

The wider storm

A cut off low moving eastward across Arizona produced widespread showers and scattered thunderstorms. Instability caused by daytime heating allowed one thunderstorm to intensify enough to produce a tornado in northern Apache County. Other thunderstorms produced hail across the area. Hail on Interstate 40 caused wrecks and a road closure.

Began near Cottonwood (36.1500, -109.8500).

Source: NOAA Storm Events Database, event 264923. Narratives are written by the National Weather Service forecast office that issued the report.

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