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

25°F

-4°C

Humidity 86%
Wind Speed NW 3 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 19 Jan 11:06 PM PST
Extended Forecast for

16 Miles SW Twisp WA

Air Stagnation Advisory January 20, 12:04am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 12:04am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 31. North wind 6 to 13 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. West wind around 10 mph.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25. Southwest wind 7 to 10 mph.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17. West wind around 9 mph.

    Low: 17 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 26. Northwest wind 13 to 15 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 31. North wind 6 to 13 mph.
Tuesday Night
Mostly clear, with a low around 16. West wind around 10 mph.
Wednesday
Mostly sunny, with a high near 25. Southwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 17. West wind around 9 mph.
Thursday
Partly sunny, with a high near 25.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Sunny, with a high near 23.
Friday Night
Partly cloudy, with a low around 13.
Saturday
A 20 percent chance of snow after 10am. Mostly sunny, with a high near 20.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 22.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SW Twisp WA
 48.18°N 120.36°W (Elev. 7339 ft)
9:02 pm PST Jan 19, 2026
12am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

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