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 >

Overview

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During the week of December 12, 2022, a powerful winter storm system moved eastward across the United States. Blizzard conditions developed in the Northern Plains, and a severe weather outbreak occurred across Texas, Oklahoma, and into the southeast United States. On December 15th, this storm system arrived in the vicinity of the Florida peninsula. Ushered along by the sharp change in temperature, a cold front moved into the region. Ahead of this front, a line of storms developed over the Gulf - bringing with it two EF1 tornadoes, an EF0 tornado, and some damaging wind gusts.

Infrared Satellite

Infrared Satellite Loop 

 

Radar Loop 12/15/2022

Radar Loop 12/15/2022