Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

35°F

2°C

Humidity 97%
Wind Speed NNW 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 08 Dec 02:06 PM PST
Extended Forecast for

12 Miles NNW Mazama WA

  • This Afternoon

    This Afternoon: Snow. The snow could be heavy at times.  High near 31. Southwest wind around 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. Total daytime snow accumulation of 5 to 9 inches possible.

    High: 31 °F

    Heavy Snow

  • Tonight

    Tonight: Snow before 1am, then a slight chance of snow after 4am. The snow could be heavy at times.  Low around 22. Windy, with a west wind 24 to 31 mph, with gusts as high as 50 mph.  Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 22 °F

    Heavy Snow
    and Windy

  • Tuesday

    Tuesday: A slight chance of snow before 7am, then snow likely after 1pm. The snow could be heavy at times.  Mostly cloudy, with a high near 24. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 32 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F

    Slight Chance
    Snow and
    Breezy then
    Heavy Snow

  • Tuesday Night

    Tuesday Night: Snow. The snow could be heavy at times.  Low around 23. Southwest wind 11 to 17 mph.  Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    Low: 23 °F

    Heavy Snow

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times.  High near 31. Breezy, with a west wind 14 to 22 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 31 °F

    Heavy Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 26. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.

    Low: 26 °F

    Heavy Snow

  • Thursday

    Thursday: Snow.  High near 28. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 28 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 25. Chance of precipitation is 60%.

    Low: 25 °F

    Snow Likely

  • Friday

    Friday: Snow likely, mainly before 10am.  Mostly cloudy, with a high near 30. Chance of precipitation is 60%.

    High: 30 °F

    Snow Likely

Detailed Forecast

This Afternoon
Snow. The snow could be heavy at times. High near 31. Southwest wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 5 to 9 inches possible.
Tonight
Snow before 1am, then a slight chance of snow after 4am. The snow could be heavy at times. Low around 22. Windy, with a west wind 24 to 31 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Tuesday
A slight chance of snow before 7am, then snow likely after 1pm. The snow could be heavy at times. Mostly cloudy, with a high near 24. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow. The snow could be heavy at times. Low around 23. Southwest wind 11 to 17 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 31. Breezy, with a west wind 14 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 26. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.
Thursday
Snow. High near 28. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Friday
Snow likely, mainly before 10am. Mostly cloudy, with a high near 30. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 27.
Saturday
Snow likely. Partly sunny, with a high near 29. Chance of precipitation is 60%.
Saturday Night
Snow. Low around 25. Chance of precipitation is 80%.
Sunday
Snow. High near 26. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW Mazama WA
 48.78°N 120.5°W (Elev. 6663 ft)
2:32 pm PST Dec 8, 2025
2pm PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

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