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Debris Flow in Lake County, California
Debris Flow December 11, 2014 · Lake County, California
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
New Long Valley Road was closed for several hours in the morning following a rock and mud slide.
The wider storm
An atmospheric river event beginning early December 11th brought periods of heavy rainfall, flooding from overly saturated grounds and high river/stream water levels, and heavy snow above 7000 ft. Windy conditions persisted through the event, causing trees and tree branches to fall down and localized power outages affecting hundreds of thousands of homes across Northern California. Snowfall of 1 to 2 feet caused travel problems at Sierra passes. Winds were reported to reach as high as 50-60 mph in the valley/foothill region, and over 100 mph in the mountains.
On December 22, Governor Brown declared a state of emergency for heavy rain, flooding and wind damage in counties including Tehama, Lake, Shasta, and Yolo.
Began near Clearlake Oaks (39.0223, -122.5727).
Source: NOAA Storm Events Database, event 553855. Narratives are written by the National Weather Service forecast office that issued the report.
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