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 NNE 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 09 Dec 05:06 PM PST
Extended Forecast for

17 Miles NE Mazama WA

  • This Afternoon

    This Afternoon: Snow likely.  Mostly cloudy, with a steady temperature around 32. Light north wind.  Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.

    High: 32 °F

    Snow Likely

  • Tonight

    Tonight: Snow before 2am, then rain, possibly mixed with snow. The snow could be heavy at times.  Temperature falling to near 31 by 9pm, then rising to around 38 during the remainder of the night. East wind around 7 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 31 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain.  High near 42. Southwest wind 6 to 8 mph.  Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain before 1am, then rain, possibly mixed with snow.  Low around 35. West wind 7 to 9 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain then
    Rain/Snow

  • Thursday

    Thursday: Rain likely, possibly mixed with snow before 1pm, then a chance of snow.  Partly sunny, with a high near 39. West wind 7 to 10 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 32. Little or no snow accumulation expected.

    Low: 32 °F

    Chance Snow

  • Friday

    Friday: A chance of rain and snow before 1pm, then a chance of rain.  Mostly cloudy, with a high near 40. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 40 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain before 7pm, then a chance of rain and snow.  Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow, mainly after 4pm.  Partly sunny, with a high near 36. Chance of precipitation is 30%.

    High: 36 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Snow likely. Mostly cloudy, with a steady temperature around 32. Light north wind. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow before 2am, then rain, possibly mixed with snow. The snow could be heavy at times. Temperature falling to near 31 by 9pm, then rising to around 38 during the remainder of the night. East wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Wednesday
Rain. High near 42. Southwest wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain before 1am, then rain, possibly mixed with snow. Low around 35. West wind 7 to 9 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain likely, possibly mixed with snow before 1pm, then a chance of snow. Partly sunny, with a high near 39. West wind 7 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 32. Little or no snow accumulation expected.
Friday
A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 40. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday Night
A chance of rain before 7pm, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Saturday
A chance of rain and snow, mainly after 4pm. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow before 1am, then a chance of rain between 1am and 4am, then a chance of rain and snow after 4am. 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 37. Chance of precipitation is 50%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Monday
Rain and snow. High near 36. Chance of precipitation is 80%.
Monday Night
Rain and snow. Low around 31. Chance of precipitation is 90%.
Tuesday
Snow likely, possibly mixed with rain. Mostly cloudy, with a high near 36. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles NE Mazama WA
 48.78°N 120.15°W (Elev. 3730 ft)
3:08 pm PST Dec 9, 2025
5pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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