Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

35°F

2°C

Humidity 94%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 09 Dec 06:06 PM PST
Extended Forecast for

16 Miles NNW Mazama WA

  • Tonight

    Tonight: Snow before 4am, then snow, possibly mixed with rain between 4am and 5am, then snow after 5am. The rain and snow could be heavy at times.  Temperature rising to around 32 by 5am. Breezy, with a southwest wind 13 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 9 to 13 inches possible.

    Low: 23 °F

    Breezy. Heavy
    Snow then
    Rain/Snow

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times.  High near 32. Breezy, with a west wind 15 to 18 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New snow accumulation of 13 to 19 inches possible.

    High: 32 °F

    Heavy Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 24. Breezy, with a west wind 14 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

    Low: 24 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow, mainly before 4pm.  High near 26. West wind 14 to 17 mph, with gusts as high as 28 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 26 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly after 10pm.  Mostly cloudy, with a low around 22. West wind around 10 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Snow Likely

  • Friday

    Friday: Snow.  High near 28. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 28 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow Likely

  • Saturday

    Saturday: A 40 percent chance of snow.  Mostly cloudy, with a high near 26.

    High: 26 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Snow, mainly after 10pm. The snow could be heavy at times.  Low around 24. Chance of precipitation is 80%.

    Low: 24 °F

    Heavy Snow

Detailed Forecast

Tonight
Snow before 4am, then snow, possibly mixed with rain between 4am and 5am, then snow after 5am. The rain and snow could be heavy at times. Temperature rising to around 32 by 5am. Breezy, with a southwest wind 13 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 9 to 13 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 32. Breezy, with a west wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 13 to 19 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 24. Breezy, with a west wind 14 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Thursday
Snow, mainly before 4pm. High near 26. West wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Thursday Night
Snow likely, mainly after 10pm. Mostly cloudy, with a low around 22. West wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow. High near 28. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 26.
Saturday Night
Snow, mainly after 10pm. The snow could be heavy at times. Low around 24. Chance of precipitation is 80%.
Sunday
Snow. The snow could be heavy at times. High near 26. Chance of precipitation is 80%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 22. Chance of precipitation is 70%.
Monday
Snow. The snow could be heavy at times. High near 27. Chance of precipitation is 90%.
Monday Night
Snow. The snow could be heavy at times. Low around 23. Breezy. Chance of precipitation is 90%.
Tuesday
Snow. The snow could be heavy at times. High near 25. Breezy. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NNW Mazama WA
 48.84°N 120.55°W (Elev. 6926 ft)
5:48 pm PST Dec 9, 2025
6pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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