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

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

unknown precip,mist

32°F

0°C

Humidity 100%
Wind Speed N 3 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 32°F (0°C)
Visibility 1.50 mi
Last update 09 Dec 11:42 PM PST
Extended Forecast for

Snoqualmie Pass WA

Flood Watch December 9, 11:59pm until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 11:59pm until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 39 °F

    Heavy Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times.  High near 50. West wind 9 to 17 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 50 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain. The rain could be heavy at times.  Low around 40. West wind 11 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 40 °F

    Heavy Rain

  • Thursday

    Thursday: Rain.  High near 44. West wind around 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 44 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Low around 39. Calm wind.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain likely, possibly mixed with snow, becoming all rain after 1pm.  Mostly cloudy, with a high near 46. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain.  Partly sunny, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

Tonight
Rain. The rain could be heavy at times. Temperature rising to around 45 by 4am. Calm wind becoming southwest around 5 mph after midnight. 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 50. West wind 9 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday Night
Rain. The rain could be heavy at times. Low around 40. West wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Thursday
Rain. High near 44. West wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain. Low around 39. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, possibly mixed with snow, becoming all rain after 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 47.
Saturday Night
Rain, mainly after 10pm. Low around 37. Chance of precipitation is 80%.
Sunday
Rain. Mostly cloudy, with a high near 43.
Sunday Night
Rain likely. Mostly cloudy, with a low around 37.
Monday
Rain. Mostly cloudy, with a high near 44.
Monday Night
Rain. Mostly cloudy, with a low around 36.
Tuesday
Rain, possibly mixed with snow. Mostly cloudy, with a high near 41.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Snoqualmie Pass WA
 47.39°N 121.4°W (Elev. 2759 ft)
10:45 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database