Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Current conditions at

JEFFERSON CREEK (JEFW1)

Lat: 47.5491°NLon: 123.21759°WElev: 2408.0ft.

NA

37°F

3°C

Humidity 94%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 14 Apr 07:36 AM PDT
Extended Forecast for

12 Miles NW Liliwaup WA

Winter Weather Advisory until April 14, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until April 14, 11:00pm

    NOW until 11:00pm Tue

    Winter Weather Advisory

  • Today

    High: 32 °F

    Heavy Snow
    and Breezy

  • Tonight

    Tonight: Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times.  Low around 22. Wind chill values between 11 and 16. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 34 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 22 °F

    Heavy Snow
    and Breezy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely before 11am, then snow showers after 11am. Some thunder is also possible.  High near 30. Wind chill values between 12 and 18. West wind 10 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 30 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow before 11pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Wind chill values between 13 and 18. West wind 8 to 14 mph, with gusts as high as 21 mph.  New snow accumulation of less than one inch possible.

    Low: 23 °F

    Chance Snow
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 37. West wind 7 to 11 mph.

    High: 37 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow. The snow could be heavy at times. High near 32. Wind chill values between 16 and 21. Breezy, with a west southwest wind 22 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 10 to 14 inches possible.
Tonight
Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times. Low around 22. Wind chill values between 11 and 16. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow likely before 11am, then snow showers after 11am. Some thunder is also possible. High near 30. Wind chill values between 12 and 18. West wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
A 50 percent chance of snow before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Wind chill values between 13 and 18. West wind 8 to 14 mph, with gusts as high as 21 mph. New snow accumulation of less than one inch possible.
Thursday
Sunny, with a high near 37. West wind 7 to 11 mph.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Partly sunny, with a high near 38.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
A chance of snow after 5pm. Partly sunny, with a high near 43.
Saturday Night
A chance of rain and snow before 8pm, then a chance of rain between 8pm and 2am, then a chance of rain and snow after 2am. Mostly cloudy, with a low around 38.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 39.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Monday
Rain and snow likely. Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NW Liliwaup WA
 47.55°N 123.32°W (Elev. 4708 ft)
11:27 pm PDT Apr 13, 2026
8am PDT Apr 14, 2026-6pm PDT Apr 20, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database