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

SAWMILL FLATS (MEFW1)

Lat: 46.9675°NLon: 121.08444°WElev: 3000.0ft.

NA

37°F

3°C

Humidity 100%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 09 Dec 09:25 PM PST
Extended Forecast for

Chinook Pass WA

Flood Watch December 9, 09:48pm until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 09:48pm until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 34 °F

    Heavy Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times.  High near 40. Breezy, with a southwest wind around 25 mph, with gusts as high as 43 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 40 °F

    Heavy Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 34. Breezy, with a southwest wind around 24 mph, with gusts as high as 38 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain and snow.  High near 36. Breezy, with a west wind 15 to 22 mph, with gusts as high as 40 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 36 °F

    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Rain, possibly mixed with snow.  Low around 34. West wind around 10 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow

  • Friday

    Friday: Rain likely, possibly mixed with snow before 1pm, then a chance of rain.  Mostly cloudy, with a high near 37. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 37 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain.  Partly sunny, with a high near 39.

    High: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Rain. The rain could be heavy at times. Temperature falling to near 34 by midnight, then rising to around 39 during the remainder of the night. Southwest wind 10 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
Rain. The rain could be heavy at times. High near 40. Breezy, with a southwest wind around 25 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain. Low around 34. Breezy, with a southwest wind around 24 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain and snow. High near 36. Breezy, with a west wind 15 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain, possibly mixed with snow. Low around 34. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Rain likely, possibly mixed with snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 37. 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 33.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 39.
Saturday Night
Rain, mainly after 10pm. Low around 31. Chance of precipitation is 80%.
Sunday
Rain, possibly mixed with snow. Mostly cloudy, with a high near 33.
Sunday Night
Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 30.
Monday
Rain, possibly mixed with snow. Mostly cloudy, with a high near 35.
Monday Night
Rain and snow. Mostly cloudy, with a low around 29.
Tuesday
Snow. Mostly cloudy, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
Chinook Pass WA
 46.88°N 121.5°W (Elev. 4823 ft)
9:15 pm PST Dec 9, 2025
9pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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