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EF1 tornado in Sonoma County, California

Tornado March 18, 2011 · Sonoma County, California

EF1

Rating

0.1 mi

Path length

100 yd

Path width

$50K

Damage as recorded

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 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

An EF1 tornado completely destroyed a metal building and severely bent a metal gate.

The wider storm

A series of weather systems bringing heavy rain, strong winds, high surf, and a tornado affected the District on March 16-21, 2011. Two deaths occurred during this time.

Began near Santa Rosa (38.4525, -122.7082).

Source: NOAA Storm Events Database, event 290104. Narratives are written by the National Weather Service forecast office that issued the report.

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