Heavy Rain in Sierra County, California

Heavy Rain October 24, 2021 – October 25, 2021 · Sierra County, California

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Several CoCoRahs Observers and Mesonet/ASOS sites reported rainfall amounts ranging from 0.4-1.0 near Independence Lake, 2.0-4.0 in and around Portola, CA, and 4.0-6.0 west of Verdi, NV.

The wider storm

A strong atmospheric river event produced a major heavy rain, high wind, and high elevation snow event for much of the region. Record-setting rainfall amounts for many areas of the Sierra into western Nevada. NWS Reno received multiple reports of mud and rock slides in the Sierra along I-80 near the summit, and CA 70 and CA 89 in Sierra, Plumas, and Lassen Counties.

Began near Sierraville Drwtr Ar (39.5500, -120.2000).

Source: NOAA Storm Events Database, event 987603. Narratives are written by the National Weather Service forecast office that issued the report.

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