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 >

Current conditions at

OROVILLE (OVLW1)

Lat: 48.96311°NLon: 119.49161°WElev: 1450.0ft.

NA

31°F

-1°C

Humidity 97%
Wind Speed NW 5 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 24 Dec 06:41 AM PST
Extended Forecast for

24 Miles NNE Mazama WA

Winter Weather Advisory December 24, 07:18am until December 24, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 24, 07:18am until December 24, 04:00pm

    NOW until 4:00pm Wed

    Winter Weather Advisory

  • Today

    High: 27 °F

    Heavy Snow
    and Breezy

  • Tonight

    Tonight: A 30 percent chance of snow before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 14. West wind 9 to 13 mph, with gusts as high as 24 mph.  New snow accumulation of less than one inch possible.

    Low: 14 °F

    Chance Snow
    then Partly
    Cloudy

  • Christmas Day

    Christmas Day: Snow, mainly after 10am.  High near 23. West wind around 8 mph becoming north in the afternoon.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 23 °F

    Snow

  • Thursday Night

    Thursday Night: Snow, mainly before 10pm.  Low around 18. Northwest wind around 10 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Snow then
    Chance Snow

  • Friday

    Friday: Snow, mainly between 10am and 4pm.  High near 21. West wind around 14 mph, with gusts as high as 29 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 21 °F

    Snow

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly before 10pm.  Mostly cloudy, with a low around 6. New snow accumulation of less than a half inch possible.

    Low: 6 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after 10pm.  Mostly cloudy, with a low around 8.

    Low: 8 °F

    Slight Chance
    Snow

Detailed Forecast

Today
Snow, mainly before 4pm. The snow could be heavy at times. High near 27. Breezy, with a north wind 10 to 20 mph becoming southeast in the morning. Winds could gust as high as 39 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 8 to 12 inches possible.
Tonight
A 30 percent chance of snow before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 14. West wind 9 to 13 mph, with gusts as high as 24 mph. New snow accumulation of less than one inch possible.
Christmas Day
Snow, mainly after 10am. High near 23. West wind around 8 mph becoming north in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Thursday Night
Snow, mainly before 10pm. Low around 18. Northwest wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
Snow, mainly between 10am and 4pm. High near 21. West wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
A 50 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 6. New snow accumulation of less than a half inch possible.
Saturday
Partly sunny, with a high near 15.
Saturday Night
A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 8.
Sunday
A 20 percent chance of snow before 10am. Mostly cloudy, with a high near 22.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 27.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 29.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
24 Miles NNE Mazama WA
 48.92°N 120.22°W (Elev. 7562 ft)
4:36 am PST Dec 24, 2025
7am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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