National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

NCSB (NCSW1)

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

NA

32°F

0°C

Humidity 94%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 09 Dec 09:06 AM PST
Extended Forecast for

16 Miles SW Twisp WA

Flood Watch December 9, 09:39am until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 09:39am until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • Today

    High: 27 °F

    Partly Sunny
    and Breezy
    then Heavy
    Snow

  • Tonight

    Tonight: Snow before 2am, then rain and snow. The rain and snow could be heavy at times. Temperature rising to around 30 by 3am. West wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    Low: 22 °F⇑

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Snow before 7am, then rain and snow between 7am and 8am, then snow after 8am. The rain and snow could be heavy at times. High near 32. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 10 to 14 inches possible.

    High: 32 °F

    Breezy.
    Rain/Snow
    then Heavy
    Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 26. West wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 10 to 14 inches possible.

    Low: 26 °F

    Heavy Snow

  • Thursday

    Thursday: Snow. The snow could be heavy at times. High near 28. West wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 28 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before 4am. Mostly cloudy, with a low around 23. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow, mainly after 10am. Mostly cloudy, with a high near 30. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Chance Snow

Detailed Forecast

Today
Snow likely, mainly after 4pm. The snow could be heavy at times. Mostly cloudy, with a high near 27. Breezy, with a southwest wind 16 to 21 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Snow before 2am, then rain and snow. The rain and snow could be heavy at times. Temperature rising to around 30 by 3am. West wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Wednesday
Snow before 7am, then rain and snow between 7am and 8am, then snow after 8am. The rain and snow could be heavy at times. High near 32. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 10 to 14 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 26. West wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 10 to 14 inches possible.
Thursday
Snow. The snow could be heavy at times. High near 28. West wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
A 40 percent chance of snow, mainly before 4am. Mostly cloudy, with a low around 23. New snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of snow, mainly after 10am. Mostly cloudy, with a high near 30. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 25.
Saturday
A 30 percent chance of snow, mainly after 10am. Partly sunny, with a high near 28.
Saturday Night
Snow likely, mainly after 10pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Sunday
Snow likely. Mostly cloudy, with a high near 25. Chance of precipitation is 60%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Monday
Snow. The snow could be heavy at times. High near 27. Chance of precipitation is 80%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SW Twisp WA
 48.2°N 120.37°W (Elev. 6736 ft)
Last Update:
9:28 am PST Dec 9, 2025
Forecast Valid:
9am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation