Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

24°F

-4°C

Humidity 92%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 18 Jan 08:06 PM PST
Extended Forecast for

11 Miles WSW Twisp WA

Air Stagnation Advisory January 18, 08:57pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 08:57pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 26 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 38. Calm wind.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28. West wind 3 to 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. West wind around 6 mph becoming calm  in the morning.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22. Light west wind.

    Low: 22 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: A 10 percent chance of snow after 4pm.  Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Light southwest wind.
M.L.King Day
Sunny, with a high near 38. Calm wind.
Monday Night
Partly cloudy, with a low around 28. West wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 36. West wind around 6 mph becoming calm in the morning.
Tuesday Night
Mostly clear, with a low around 22. Light west wind.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
A 10 percent chance of snow after 4pm. Mostly sunny, with a high near 33.
Thursday Night
A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 24.
Friday
A 40 percent chance of snow. Partly sunny, with a high near 30.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 17.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 23.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Twisp WA
 48.29°N 120.33°W (Elev. 5220 ft)
3:07 pm PST Jan 18, 2026
8pm PST Jan 18, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database