National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

Dangerously cold air will be in place across the area through Monday (New Year's Day) morning. To avoid any danger involved with the extreme cold, limit your time outdoors, and cover any exposed skin. If stranded on a road, do not venture outside to seek help. Additionally, be cautious with space heaters. See the below graphics for more winter weather safety tips and information, or visit http://www.nws.noaa.gov/os/cold/during.shtml.