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 >

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Last Map Update: Wed, Dec 24, 2025 at 6:54:12 am PST

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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Wind Safety Tips

WIND TIMING

High winds can be dangerous! If possible, stay inside. When driving, slow down, keep both hands on the wheel, and keep away from high-profile vehicles. Be aware of loose outdoor items and stay clear of trees. Visit weather.gov/wind for more information.

Wind gusts of 45 to 55 mph is expected across southwest Washington and northwest Oregon on Wednesday, December 24. This graphic shows the timing of the strongest winds. The winds will start to the south in Lane County around 7 am, reach the Portland/Vancouver Metro area around 10 am, and southwest Washington around noon. The strong winds will persist 1 to 3 hours for each location.