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 >

The National Weather Service has made changes to our Flash Flood Warnings that includes impact based information and tags at the bottom of the warnings based on expected severity. These features are similar to our current Severe Thunderstorm and Tornado Warnings.

The Flash Flood Warnings (FFW) will now have tags and information at the bottom that includes: