Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

MANZANITA LAKE (VIOC1)

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

NA

43°F

6°C

Humidity 88%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 24 Dec 03:52 AM PST
Extended Forecast for

22 Miles NNW Chester CA

Flood Watch December 24, 04:23am until December 26, 04:00pm
Winter Storm Warning until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
Winter Storm Warning
  •  
    Flood Watch December 24, 04:23am until December 26, 04:00pm
    Winter Storm Warning until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 32 °F

    Rain/Snow and
    Windy

  • Wednesday

    Wednesday: Rain and snow before noon, then a slight chance of snow between noon and 1pm. The snow could be heavy at times.  Temperature falling to around 27 by 10am. Windy, with a south wind 25 to 30 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 60 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Rain/Snow and
    Windy then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow, mainly after 8pm. The snow could be heavy at times.  Low around 23. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 60 mph.  Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    Low: 23 °F

    Heavy Snow
    and Breezy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times.  High near 30. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 65 mph.  Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

    High: 30 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times.  Low around 23. Breezy, with a south wind 23 to 25 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

    Low: 23 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow.  High near 26. Breezy.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 26 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow, mainly before 4am.  Low around 20. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 20 °F

    Snow

  • Saturday

    Saturday: A chance of snow before 10am.  Mostly sunny, with a high near 27.

    High: 27 °F

    Chance Snow
    then Mostly
    Sunny

Detailed Forecast

Overnight
Rain and snow. Steady temperature around 32. Windy, with a south wind around 31 mph, with gusts as high as 70 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Rain and snow before noon, then a slight chance of snow between noon and 1pm. The snow could be heavy at times. Temperature falling to around 27 by 10am. Windy, with a south wind 25 to 30 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow, mainly after 8pm. The snow could be heavy at times. Low around 23. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 30. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 23. Breezy, with a south wind 23 to 25 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.
Friday
Snow. High near 26. Breezy. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow, mainly before 4am. Low around 20. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday
A chance of snow before 10am. Mostly sunny, with a high near 27.
Saturday Night
Mostly clear, with a low around 15.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 35.
Monday Night
Mostly clear, with a low around 23.
Tuesday
Sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNW Chester CA
 40.6°N 121.37°W (Elev. 7159 ft)
1:21 am PST Dec 24, 2025
4am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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