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

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

31°F

-1°C

Humidity 100%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 26 Dec 01:06 AM PST
Extended Forecast for

8 Miles ESE Twisp WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of snow, mainly after 1pm.  Partly sunny, with a temperature rising to near 31 by noon, then falling to around 24 during the remainder of the day. Light and variable wind becoming south 5 to 8 mph in the morning.  New snow accumulation of less than a half inch possible.

    High: 31 °F

    Slight Chance
    Snow then
    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow before 10pm.  Partly cloudy, with a low around 13. Northwest wind 8 to 10 mph.  New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 20. Northwest wind 6 to 9 mph.

    High: 20 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 11. North wind 3 to 6 mph.

    Low: 11 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 21.

    High: 21 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 23.

    High: 23 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 26. Calm wind.
Friday
A 50 percent chance of snow, mainly after 1pm. Partly sunny, with a temperature rising to near 31 by noon, then falling to around 24 during the remainder of the day. Light and variable wind becoming south 5 to 8 mph in the morning. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow before 10pm. Partly cloudy, with a low around 13. Northwest wind 8 to 10 mph. New snow accumulation of less than a half inch possible.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 20. Northwest wind 6 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 11. North wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly cloudy, with a high near 23.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 24.
New Year's Day
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ESE Twisp WA
 48.32°N 119.95°W (Elev. 3510 ft)
1:32 am PST Dec 26, 2025
2am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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