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Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Overview

A strong low-pressure system brought heavy snow and very gusty winds to northeastern Wyoming and western South Dakota Christmas Day of 2016. Before the snow, some areas experienced freezing rain and sleet, creating a layer of icing. Generally, 4 to 12 inches of snow fell across the forecast area, with the highest amounts across northwestern SD, northeastern WY, and the Black Hills. Strong winds up to 72 mph created blowing snow, resulting in blizzard conditions across much of the area, even after the snow stopped falling. Many places had drifts several feet high. 

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Devils Tower Gillette 8 mi N Sturgis
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