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 98%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 09 Dec 09:01 PM PST
Extended Forecast for

3 Miles S Trinity WA

Flood Watch December 9, 09:39pm until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 09:39pm until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 33 °F

    Rain/Snow
    then Heavy
    Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times.  High near 46. West wind 5 to 7 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 46 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain. The rain could be heavy at times.  Low around 36. West wind around 8 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 36 °F

    Heavy Rain

  • Thursday

    Thursday: Rain before 10am, then rain likely, possibly mixed with snow between 10am and 1pm, then rain likely after 1pm.  High near 44. West wind 7 to 13 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain likely before 1am, then rain likely, possibly mixed with snow between 1am and 4am, then rain likely after 4am.  Mostly cloudy, with a low around 34. West wind around 6 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Friday

    Friday: Rain likely before 7am, then rain likely, possibly mixed with snow between 7am and 1pm, then rain likely 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 36.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain.  Partly sunny, with a high near 45.

    High: 45 °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 39 by 4am. Calm wind becoming southeast around 6 mph after midnight. 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 46. West wind 5 to 7 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 36. West wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Thursday
Rain before 10am, then rain likely, possibly mixed with snow between 10am and 1pm, then rain likely after 1pm. High near 44. West wind 7 to 13 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Rain likely before 1am, then rain likely, possibly mixed with snow between 1am and 4am, then rain likely after 4am. Mostly cloudy, with a low around 34. West wind around 6 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Rain likely before 7am, then rain likely, possibly mixed with snow between 7am and 1pm, then rain likely 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 36.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 45.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
Rain likely. Mostly cloudy, with a high near 44. Chance of precipitation is 70%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Monday
Rain. High near 43. Chance of precipitation is 80%.
Monday Night
Rain. Low around 33. Chance of precipitation is 90%.
Tuesday
Rain, possibly mixed with snow. High near 42. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Trinity WA
 48.02°N 120.82°W (Elev. 2785 ft)
5:48 pm PST Dec 9, 2025
9pm 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