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

23°F

-5°C

Humidity 84%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 20 Jan 06:06 AM PST
Extended Forecast for

9 Miles SE Twisp WA

Air Stagnation Advisory January 20, 06:42am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 06:42am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 33 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 25. Northwest wind around 8 mph becoming northeast after midnight.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31. Northwest wind 5 to 7 mph becoming southeast in the afternoon.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20. Northwest wind around 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 30. Northwest wind around 6 mph becoming east in the afternoon.

    High: 30 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 33. North wind 5 to 9 mph becoming light and variable in the afternoon.
Tonight
Mostly clear, with a steady temperature around 25. Northwest wind around 8 mph becoming northeast after midnight.
Wednesday
Mostly sunny, with a high near 31. Northwest wind 5 to 7 mph becoming southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 20. Northwest wind around 6 mph.
Thursday
Partly sunny, with a high near 30. Northwest wind around 6 mph becoming east in the afternoon.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 28.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 22.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SE Twisp WA
 48.25°N 120°W (Elev. 4911 ft)
1:12 am PST Jan 20, 2026
6am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database