EF1 tornado — Glenn County, California

EF1 tornado in Glenn County, California

Tornado May 25, 2011 · Glenn County, California

EF1

Rating

21.6 mi

Path length

120 yd

Path width

$200K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 120 yards (0.07 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

The first and northernmost tornado in the outbreak developed east of the town of Artois in Glenn County at approximately 5:08 pm and moved east-northeast, passing south of the town of Chico in Butte County. It caused significant damage to an almond grove in Glenn County and less significant damage to farm implements, roofing materials, and another almond grove across its path. The rating of an EF1 was based upon the uprooting of hundreds of almond trees with a few instances of broken large branches and trunks. The estimated highest wind speed (3 second gust) based upon damage with this tornado is 95 mph. There were no injuries nor fatalities.

The wider storm

Three tornadoes moved through Glenn and Butte Counties the evening of May 25, 2011. Significant damage was caused to several structures and thousands of almond trees were destroyed.

Other tornadoes from the same storm system

Source: NOAA Storm Events Database, event 299806. Narratives are written by the National Weather Service forecast office that issued the report.

EF1 tornado in Glenn County, California

What the National Weather Service wrote

The wider storm

Other tornadoes from the same storm system

Tornadoes near your address