A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. 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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