
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 >
New Graphical Drought Information Statement
Flash Flood Warning Issued: 12/23/2025 08:35:00 AM UTC
No active Flash Flood Watch
Flood Potential Outlook Issued: 11/03/2025 10:56:00 AM UTC
Flash Flood Statement Issued: 12/23/2025 10:03:00 AM UTC
Flood Statement Issued: 12/23/2025 01:36:00 PM UTC
No active Hydrological Coordination Message for Guam
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