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

34°F

1°C

Humidity 97%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 09 Dec 08:06 PM PST
Extended Forecast for

11 Miles NE Mazama WA

  • Tonight

    Tonight: Snow before 2am, then rain, possibly mixed with snow. The snow could be heavy at times.  Temperature rising to around 35 by 5am. Southeast wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 5 to 9 inches possible.

    Low: 29 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain, possibly mixed with snow.  High near 42. Light west wind increasing to 5 to 9 mph in the morning.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow.  Low around 31. West wind 8 to 11 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 31 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow likely before 1pm, then a chance of snow.  Partly sunny, with a high near 37. West wind 8 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 28. Northwest wind around 6 mph.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: Snow likely before 1pm, then rain likely, possibly mixed with snow.  Mostly cloudy, with a high near 39. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A chance of rain and snow.  Mostly cloudy, with a low around 28. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow.  Partly sunny, with a high near 36. Chance of precipitation is 30%.

    High: 36 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Rain likely, possibly mixed with snow, mainly after 4am.  Mostly cloudy, with a low around 28. Chance of precipitation is 60%.

    Low: 28 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
Snow before 2am, then rain, possibly mixed with snow. The snow could be heavy at times. Temperature rising to around 35 by 5am. Southeast wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 5 to 9 inches possible.
Wednesday
Rain, possibly mixed with snow. High near 42. Light west wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain and snow. Low around 31. West wind 8 to 11 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Thursday
Rain and snow likely before 1pm, then a chance of snow. Partly sunny, with a high near 37. West wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 28. Northwest wind around 6 mph. New snow accumulation of less than a half inch possible.
Friday
Snow likely before 1pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 39. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday
A chance of rain and snow. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Saturday Night
Rain likely, possibly mixed with snow, mainly after 4am. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 60%.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Monday
Rain and snow. High near 35. Chance of precipitation is 80%.
Monday Night
Rain and snow. Low around 28. Chance of precipitation is 90%.
Tuesday
Snow likely. Mostly cloudy, with a high near 35. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NE Mazama WA
 48.74°N 120.29°W (Elev. 4439 ft)
5:48 pm PST Dec 9, 2025
8pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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