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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 >

Flooding

The following summaries cover "significant" or widespread flooding. River and flash flooding can be found in these summaries. If the flooding event accompanied severe thunderstorms or tornado outbreaks, it will likely be included in that event's summary under the "Thunderstorms / Tornadoes" section.

 

2020

2019

2018

 

Extreme Heat & Cold

The following summaries cover "significant" or widespread high heat or extreme cold. Dangerous wind chills and life threatening heat indices can be found in these summaries. If the extreme temperatures were associated with a summer or winter storm, it may be found under the "Thunderstorms & Tornadoes" or "Winter" sections.

 

Other Events

The following summaries cover events that don't fall under the other categories - such as high wind events (not associated with thunderstorms). Other atmospheric events, such as auroras, may be found here.


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