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

32°F

0°C

Humidity 100%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 10 Dec 12:06 AM PST
Extended Forecast for

2 Miles ESE Mazama WA

  • Overnight

    Overnight: Rain, possibly mixed with snow.  Steady temperature around 36. East wind around 5 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 36 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain.  High near 45. Northwest wind 6 to 9 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 45 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 35. West wind around 10 mph.  Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 35 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 7am.  Partly sunny, with a high near 43. West wind 7 to 9 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain Likely
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A chance of rain and snow.  Mostly cloudy, with a low around 31. Northwest wind 3 to 6 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 31 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain likely, possibly mixed with snow, becoming all rain after 7am.  Mostly cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 10am.  Partly sunny, with a high near 43.

    High: 43 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain, mainly after 10pm.  Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Overnight
Rain, possibly mixed with snow. Steady temperature around 36. East wind around 5 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Rain. High near 45. Northwest wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain. Low around 35. West wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday
Rain likely, mainly before 7am. Partly sunny, with a high near 43. West wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Northwest wind 3 to 6 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
Rain likely, possibly mixed with snow, becoming all rain after 7am. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 30 percent chance of rain, mainly before 10am. Partly sunny, with a high near 43.
Saturday Night
A 50 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 32.
Sunday
Rain likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Monday
Rain. High near 43. Chance of precipitation is 80%.
Monday Night
Rain. Low around 31. Chance of precipitation is 90%.
Tuesday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Mazama WA
 48.6°N 120.41°W (Elev. 2201 ft)
1:13 am PST Dec 10, 2025
2am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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