Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

36°F

2°C

Humidity 99%
Wind Speed NNW 8 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill30°F (-1°C)
Last update 09 Dec 02:06 AM PST
Extended Forecast for

9 Miles ENE Twisp WA

  • Overnight

    Overnight: A 20 percent chance of snow.  Partly cloudy, with a low around 32. West wind around 15 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after 4pm.  Mostly cloudy, with a high near 36. West wind 5 to 9 mph.  New snow accumulation of less than one inch possible.

    High: 36 °F

    Partly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow before 1am, then rain, possibly mixed with snow. The snow could be heavy at times.  Temperature falling to near 30 by 9pm, then rising to around 35 during the remainder of the night. Southeast wind 5 to 7 mph becoming west after midnight.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 30 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain likely.  Mostly cloudy, with a high near 40. West wind around 8 mph.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, possibly mixed with snow before 10pm, then rain likely between 10pm and 1am, then rain likely, possibly mixed with snow after 1am.  Mostly cloudy, with a low around 34. West wind around 8 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow likely, mainly before 4pm.  Partly sunny, with a high near 39. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A slight chance of rain and snow before 7pm, then a slight chance of snow between 7pm and 10pm.  Mostly cloudy, with a low around 32. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of rain and snow after 10am.  Mostly cloudy, with a high near 39. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow. Partly cloudy, with a low around 32. West wind around 15 mph, with gusts as high as 24 mph.
Tuesday
A 30 percent chance of snow, mainly after 4pm. Mostly cloudy, with a high near 36. West wind 5 to 9 mph. New snow accumulation of less than one inch possible.
Tuesday Night
Snow before 1am, then rain, possibly mixed with snow. The snow could be heavy at times. Temperature falling to near 30 by 9pm, then rising to around 35 during the remainder of the night. Southeast wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Rain likely. Mostly cloudy, with a high near 40. West wind around 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain likely, possibly mixed with snow before 10pm, then rain likely between 10pm and 1am, then rain likely, possibly mixed with snow after 1am. Mostly cloudy, with a low around 34. West wind around 8 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
Rain and snow likely, mainly before 4pm. Partly sunny, with a high near 39. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain and snow before 7pm, then a slight chance of snow between 7pm and 10pm. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Friday
A slight chance of rain and snow after 10am. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 32.
Saturday
Mostly cloudy, with a high near 35.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Monday
Rain and snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Twisp WA
 48.39°N 119.91°W (Elev. 3993 ft)
2:52 am PST Dec 9, 2025
3am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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