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 >

Hazardous Weather Conditions

Storm Warning until December 26, 03:00 AM PST

Last Update: 807 PM PST Wed Dec 24 2025

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For More Weather Information:

San Francisco Bay Area/Monterey, CA Local Forecast Office

10NM WSW Santa Cruz CA

Marine Zone Forecast

Tonight

S wind 30 to 40 kt. Gusts up to 55 kt, increasing to 60 kt late. Seas 9 to 13 ft, building to 12 to 14 ft after midnight. Wave detail: S 13 ft at 10 seconds and NW 5 ft at 12 seconds. Showers with a chance of tstms.

Christmas Day

S wind 25 to 35 kt. Gusts up to 45 kt, increasing to 55 kt in the afternoon. Seas 11 to 15 ft. Wave detail: SW 14 ft at 10 seconds and NW 3 ft at 11 seconds. Showers with a slight chance of tstms.

Thu Night

S wind 25 to 35 kt. Gusts up to 50 kt in the evening. Seas 12 to 16 ft. Wave detail: SW 14 ft at 12 seconds and W 7 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 13 to 16 ft. Wave detail: SW 13 ft at 13 seconds and W 16 ft at 14 seconds. Showers.

Fri Night

SW wind around 10 kt, veering to NW after midnight. Seas 11 to 15 ft, subsiding to 9 to 12 ft after midnight. Wave detail: S 6 ft at 11 seconds and W 15 ft at 15 seconds. A slight chance of tstms. Showers, mainly in the evening.

Sat

N wind 10 to 15 kt. Seas 8 to 11 ft. Wave detail: SW 3 ft at 11 seconds and NW 10 ft at 12 seconds. A chance of showers.

Sat Night

N wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 7 ft at 11 seconds.

Sun

N wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 5 ft at 9 seconds.

Sun Night

N wind 10 to 15 kt, becoming NE 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave detail: NW 4 ft at 9 seconds.

Mon

NE wind 5 to 10 kt, backing to N in the afternoon. Seas 3 to 4 ft. Wave detail: NW 3 ft at 8 seconds.

Mon Night

NE wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 3 ft at 8 seconds.

winds and seas higher in and near tstms.