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 87%
Wind Speed NW 3 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 20 Jan 02:06 AM PST
Extended Forecast for

11 Miles E Twisp WA

Air Stagnation Advisory January 20, 02:38am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 02:38am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 34. North wind around 6 mph becoming calm  in the morning.

    High: 34 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a steady temperature around 25. North wind around 6 mph.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. Northwest wind around 6 mph becoming light and variable  in the morning.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. Northwest wind around 5 mph.

    Low: 21 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 23. Northwest wind around 6 mph.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 34. North wind around 6 mph becoming calm in the morning.
Tuesday Night
Mostly clear, with a steady temperature around 25. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 32. Northwest wind around 6 mph becoming light and variable in the morning.
Wednesday Night
Mostly cloudy, with a low around 21. Northwest wind around 5 mph.
Thursday
Partly sunny, with a high near 30.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 28.
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
Partly sunny, with a high near 31.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles E Twisp WA
 48.39°N 119.88°W (Elev. 4150 ft)
1:12 am PST Jan 20, 2026
2am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

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