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 3:24:41 pm PST

Watches, Warnings & Advisories

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National Weather Service Salt Lake City, UT

National Weather Service San Joaquin Valley, CA

National Weather Service NWS Flagstaff, AZ

Winter Storm Warning

High Wind Warning

Winter Weather Advisory

Flood Advisory

Wind Advisory

Avalanche Watch

Flood Watch

Wind Advisory

Strong Wind Gusts

Projected Rainfall Amounts

Projected Precipitation

Snow Amount Probabilities

A Wind Advisory is in effect for Central Nevada and parts of Northern Nevada until 7 PM PST Thursday evening. Blowing dust will reduce visibilities at times. Travel will be difficult, particularly for high profile vehicles.

Strong south wind gusts as high as 55 mph will persist in Central Nevada and parts of Northern Nevada into at least Thursday evening. Blowing dust will reduce visibilities at times. Travel will be difficult, particularly for high profile vehicles.

A storm system will impact Northern and Central Nevada this afternoon and tonight, resulting in periods of rain and high elevation snow. The majority of this precipitation will fall this evening.

A storm system will impact Northern and Central Nevada Thursday afternoon through Friday night, resulting in periods of precipitation. Snow levels will start at around 7,000 feet Thursday afternoon, before dropping to about 5,500 feet Friday evening. The majority of this precipitation will fall Friday. Here are snow amount probabilities for select locations in Northern and Central Nevada from 4 AM PST Friday, December 26th, 2025 until 4 AM PST Saturday, December 27th, 2025.