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

STEHEKIN-AIRSTRIP (STRW1)

Lat: 48.34694°NLon: 120.72028°WElev: 1230.0ft.

NA

40°F

4°C

Humidity 96%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 09 Dec 07:01 PM PST
Extended Forecast for

Trinity WA

Flood Watch December 9, 08:02pm until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 08:02pm until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 35 °F

    Rain/Snow
    then Heavy
    Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times.  High near 45. West wind 3 to 8 mph.  Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

    High: 45 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain before 10pm, then rain, possibly mixed with snow between 10pm and 4am, then rain after 4am. The rain could be heavy at times.  Low around 35. West wind around 10 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow

  • Thursday

    Thursday: Rain before 7am, then rain, possibly mixed with snow.  High near 43. West wind 8 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow likely.  Mostly cloudy, with a low around 34. West wind around 7 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    Likely

  • Friday

    Friday: Rain, possibly mixed with snow, becoming all rain after 1pm.  High near 44. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow

  • 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 40 percent chance of rain.  Partly sunny, with a high near 44.

    High: 44 °F

    Chance Rain

Detailed Forecast

Tonight
Rain, possibly mixed with snow, becoming all rain after midnight. The rain could be heavy at times. Temperature rising to around 40 by 4am. Southeast wind 3 to 6 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Rain. The rain could be heavy at times. High near 45. West wind 3 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.
Wednesday Night
Rain before 10pm, then rain, possibly mixed with snow between 10pm and 4am, then rain after 4am. The rain could be heavy at times. Low around 35. West wind around 10 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Rain before 7am, then rain, possibly mixed with snow. High near 43. West wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 34. West wind around 7 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 44. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 44.
Saturday Night
Rain, mainly after 10pm. Low around 34. Chance of precipitation is 80%.
Sunday
Rain. High near 43. Chance of precipitation is 80%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Monday
Rain. High near 43. Chance of precipitation is 90%.
Monday Night
Rain, possibly mixed with snow. Low around 33. Chance of precipitation is 90%.
Tuesday
Rain and snow. High near 41. Chance of precipitation is 80%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Trinity WA
 48.08°N 120.84°W (Elev. 3346 ft)
5:48 pm PST Dec 9, 2025
8pm 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