National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >


Snow this morning, mainly over the southwest. The heaviest snow will be across the Midcoast region with very difficult travel. Snow will taper off midday. A new low will give around 2 inches of snow across the area Christmas Morning, then windy and colder late Christmas day.

This general weather briefing slide is updated daily in the early AM hours before 7am (slide update time at bottom right of slide). It may not be updated as conditions change.  For high-impact events, more detailed information will be provided via traditional decision support services.

 


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