Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat 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 the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Current conditions at

JEFFERSON CREEK (JEFW1)

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

NA

37°F

3°C

Humidity 96%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 13 Apr 11:36 PM PDT
Extended Forecast for

12 Miles NW Liliwaup WA

  • Overnight

    Overnight: Snow likely, mainly between 4am and 5am.  Mostly cloudy, with a low around 29. Wind chill values between 17 and 22. West southwest wind 16 to 20 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 29 °F

    Snow Likely

  • Tuesday

    Tuesday: Snow. The snow could be heavy at times.  High near 31. Wind chill values between 13 and 18. Windy, with a west southwest wind 25 to 32 mph, with gusts as high as 45 mph.  Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    High: 31 °F

    Heavy Snow
    and Windy

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times.  Low around 21. Wind chill values between 9 and 17. Breezy, with a west northwest wind 24 to 29 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 41 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 21 °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 29. Wind chill values between 10 and 16. West wind 11 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 29 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow before 11pm.  Partly cloudy, with a low around 22. West wind 9 to 16 mph, with gusts as high as 23 mph.  New snow accumulation of less than one inch possible.

    Low: 22 °F

    Chance Snow
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Snow likely, mainly between 4am and 5am. Mostly cloudy, with a low around 29. Wind chill values between 17 and 22. West southwest wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 3 inches possible.
Tuesday
Snow. The snow could be heavy at times. High near 31. Wind chill values between 13 and 18. Windy, with a west southwest wind 25 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Tuesday Night
Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times. Low around 21. Wind chill values between 9 and 17. Breezy, with a west northwest wind 24 to 29 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Wednesday
Snow likely before 11am, then snow showers after 11am. Some thunder is also possible. High near 29. Wind chill values between 10 and 16. West wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
A 50 percent chance of snow before 11pm. Partly cloudy, with a low around 22. West wind 9 to 16 mph, with gusts as high as 23 mph. New snow accumulation of less than one inch possible.
Thursday
Sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 36.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 42.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 37.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 38.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 31.
Monday
Snow likely, possibly mixed with rain. Mostly cloudy, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NW Liliwaup WA
 47.6°N 123.27°W (Elev. 6001 ft)
11:27 pm PDT Apr 13, 2026
12am 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