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

MANZANITA LAKE (VIOC1)

Lat: 40.54011°NLon: 121.58016°WElev: 5732.0ft.

NA

33°F

1°C

Humidity 95%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 24 Dec 08:52 PM PST
Extended Forecast for

20 Miles NW Chester CA

Winter Storm Warning December 24, 09:30pm until December 26, 10:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 24, 09:30pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Winter Storm Warning

  • Tonight

    Low: 29 °F

    Heavy Snow
    and Windy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times.  Steady temperature around 26. Windy, with a south southwest wind 31 to 37 mph, with gusts as high as 65 mph.  Chance of precipitation is 100%. New snow accumulation of 20 to 26 inches possible.

    High: 26 °F

    Heavy Snow
    and Windy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times.  Low around 24. Windy, with a south southwest wind 31 to 33 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New snow accumulation of 20 to 26 inches possible.

    Low: 24 °F

    Heavy Snow
    and Windy

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 26. Windy, with a south southwest wind 23 to 31 mph, with gusts as high as 47 mph.  Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    High: 26 °F

    Heavy Snow
    and Windy

  • Friday Night

    Friday Night: Snow, mainly before 4am. The snow could be heavy at times.  Low around 22. West southwest wind 8 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 22 °F

    Heavy Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 10am.  Mostly sunny, with a high near 28. New snow accumulation of less than a half inch possible.

    High: 28 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Steady temperature around 29. Windy, with a south wind 24 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 17 to 23 inches possible.
Christmas Day
Snow. The snow could be heavy at times. Steady temperature around 26. Windy, with a south southwest wind 31 to 37 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 20 to 26 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 24. Windy, with a south southwest wind 31 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 20 to 26 inches possible.
Friday
Snow. The snow could be heavy at times. High near 26. Windy, with a south southwest wind 23 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Friday Night
Snow, mainly before 4am. The snow could be heavy at times. Low around 22. West southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
A 40 percent chance of snow, mainly before 10am. Mostly sunny, with a high near 28. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly clear, with a low around 18.
Sunday
Sunny, with a high near 31.
Sunday Night
Clear, with a low around 23.
Monday
Sunny, with a high near 36.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 40.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
A slight chance of snow. Sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles NW Chester CA
 40.46°N 121.54°W (Elev. 8399 ft)
1:21 pm PST Dec 24, 2025
9pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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