Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas
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 >
| NWS Forecast for: Coastal Waters from Point Arena to Point Reyes California out to 10 nm (PZZ540) Issued by: National Weather Service San Francisco Bay Area/Monterey, CA Last Update: 852 AM PST Wed Dec 24 2025 | |
Today: SW wind 20 to 25 kt, becoming S 10 to 15 kt late this morning, then becoming SE 15 to 20 kt early this afternoon, rising to 25 to 30 kt with gusts up to 40 kt late. Seas 11 to 15 ft, subsiding to 9 to 12 ft this afternoon. Wave detail: S 14 ft at 11 seconds and NW 7 ft at 12 seconds. A chance of showers this morning. A slight chance of tstms. Showers likely this afternoon. Tonight: S wind 25 to 35 kt. Gusts up to 45 kt, increasing to 55 kt after midnight. Seas 10 to 14 ft, building to 12 to 15 ft after midnight. Wave detail: S 14 ft at 10 seconds and NW 6 ft at 11 seconds. Showers with a chance of tstms. Christmas Day: S wind 25 to 30 kt with gusts up to 45 kt. Seas 12 to 14 ft, building to 12 to 17 ft in the afternoon. Wave detail: S 16 ft at 10 seconds and NW 5 ft at 13 seconds. A slight chance of tstms. Showers. Thu Night: S wind 25 to 30 kt with gusts up to 40 kt. Seas 14 to 18 ft. Wave detail: S 16 ft at 11 seconds and W 14 ft at 13 seconds. Showers with a slight chance of tstms in the evening, then showers after midnight. Fri: S wind 20 to 25 kt, easing to 15 to 20 kt in the afternoon. Seas 15 to 18 ft, subsiding to 13 to 18 ft in the afternoon. Wave detail: S 10 ft at 11 seconds and W 17 ft at 15 seconds. Showers with a slight chance of tstms. Fri Night: NW wind 10 to 15 kt. Seas 10 to 14 ft, subsiding to 9 to 12 ft after midnight. Wave detail: SW 9 ft at 11 seconds and W 11 ft at 13 seconds. Showers likely, mainly in the evening. Sat: N wind 10 to 15 kt. Seas 7 to 10 ft, subsiding to 6 to 8 ft in the afternoon. Wave detail: SW 3 ft at 9 seconds and NW 10 ft at 11 seconds. A chance of showers in the morning. Sat Night: N wind 5 to 10 kt. Seas 5 to 8 ft. Wave detail: S 2 ft at 9 seconds and NW 7 ft at 10 seconds. Sun: NE wind around 5 kt, backing to NW around 5 kt in the afternoon. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds. Sun Night: N wind around 5 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds. winds and seas higher in and near tstms. | |
| Zone Forecast: Coastal Waters from Point Arena to Point Reyes California out to 10 nm (PZZ540) | |
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