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

MANSON (MASW)

Lat: 47.91694°NLon: 120.12444°WElev: 1972.0ft.

NA

40°F

4°C

Humidity 88%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 09 Dec 08:00 PM PST
Extended Forecast for

16 Miles ESE Trinity WA

Flood Watch December 9, 08:40pm until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 08:40pm until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 29 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain before 1pm, then snow, possibly mixed with rain. The rain could be heavy at times.  High near 37. Breezy, with a west wind 16 to 23 mph, with gusts as high as 37 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Breezy. Heavy
    Rain then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 1am.  Low around 31. Windy, with a west wind 17 to 26 mph, with gusts as high as 43 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 31 °F

    Rain/Snow and
    Windy

  • Thursday

    Thursday: Snow likely.  Mostly cloudy, with a high near 33. West wind 10 to 17 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 33 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 29. Northwest wind around 9 mph.  New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow

  • Friday

    Friday: A chance of snow before 1pm, then a chance of rain and snow.  Mostly cloudy, with a high near 34. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 7pm, then a chance of snow.  Mostly cloudy, with a low around 30. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 10am.  Partly sunny, with a high near 31.

    High: 31 °F

    Chance Snow

Detailed Forecast

Tonight
Snow before 2am, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Temperature rising to around 37 by 5am. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Wednesday
Rain before 1pm, then snow, possibly mixed with rain. The rain could be heavy at times. High near 37. Breezy, with a west wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain and snow, becoming all snow after 1am. Low around 31. Windy, with a west wind 17 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow likely. Mostly cloudy, with a high near 33. West wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 29. Northwest wind around 9 mph. New snow accumulation of less than a half inch possible.
Friday
A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 34. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow, mainly after 10am. Partly sunny, with a high near 31.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 29.
Sunday
Snow likely. Mostly cloudy, with a high near 31. Chance of precipitation is 60%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Monday
Snow. The snow could be heavy at times. High near 30. Chance of precipitation is 80%.
Monday Night
Snow. The snow could be heavy at times. Low around 27. Chance of precipitation is 90%.
Tuesday
Snow likely. Mostly cloudy, with a high near 30. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles ESE Trinity WA
 48.01°N 120.5°W (Elev. 6024 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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