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EF0 tornado in Yuba County, California

Tornado March 21, 2018 · Yuba County, California

EF0

Rating

1.0 mi

Path length

30 yd

Path width

$1K

Damage as recorded

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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 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

Tornado touchdown observed by Yuba County deputies at Yuba County. Minor damage was observed, including ripped tarps and objects knocked over. Another touchdown was observed and videoed in an open field, about a mile to the north. No damage was observed at the second touchdown location.

The wider storm

Torrential rain from an atmospheric river with locally heavy convective showers brought flash flooding to portions of the northern Sierra and Motherlode foothills. The heaviest flooding was in Groveland, where 4-5 of rain fell, combining with 8-9 of rain in higher elevations upstream. There was also widespread damage in Tuolumne County to roads from debris flows, soil erosion, erosion of water conveyance systems, sewer systems that were inundated with excess water and debris. Roads damaged inluded state Highways 49 and 132. Moccasin Dam was damaged and came close to failure, with road closures. A tornado struck an amphitheater in Wheatland and caused minor damage. Heavy snow caused travel problems over Sierra highways.

Began near Arboga (39.0300, -121.5200).

Source: NOAA Storm Events Database, event 747045. Narratives are written by the National Weather Service forecast office that issued the report.

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