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

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

MARTEN RIDGE (MRTW1)

Lat: 48.76292°NLon: 121.69823°WElev: 3520.0ft.

NA

38°F

3°C

Humidity NA
Wind Speed NA NA MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

10 Miles NNW Marblemount WA

Winter Storm Warning April 14, 11:00am until April 15, 11:00pm
Click here for hazard details and duration
Winter Storm Warning
  • This Afternoon

    This Afternoon: A 50 percent chance of snow.  Mostly cloudy, with a high near 35. Wind chill values between 25 and 30. West southwest wind around 9 mph.  Total daytime snow accumulation of less than one inch possible.

    High: 35 °F

    Chance Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times.  Low around 30. Wind chill values between 22 and 27. West southwest wind around 9 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 30 °F

    Heavy Snow

  • Tuesday

    Tuesday: Snow. The snow could be heavy at times.  High near 32. Wind chill values between 19 and 24. South southwest wind 10 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.

    High: 32 °F

    Heavy Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before 11pm. The snow could be heavy at times.  Low around 21. Wind chill values between 13 and 18. Southwest wind 8 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 21 °F

    Heavy Snow
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, mainly between 11am and 2pm, then snow showers likely after 2pm. Some thunder is also possible.  Mostly cloudy, with a high near 31. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 31 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 23. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow.  Partly sunny, with a high near 34. Little or no snow accumulation expected.

    High: 34 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow.  Partly sunny, with a high near 37.

    High: 37 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Mostly cloudy, with a high near 35. Wind chill values between 25 and 30. West southwest wind around 9 mph. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow. The snow could be heavy at times. Low around 30. Wind chill values between 22 and 27. West southwest wind around 9 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Tuesday
Snow. The snow could be heavy at times. High near 32. Wind chill values between 19 and 24. South southwest wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.
Tuesday Night
Snow, mainly before 11pm. The snow could be heavy at times. Low around 21. Wind chill values between 13 and 18. Southwest wind 8 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Wednesday
Snow likely, mainly between 11am and 2pm, then snow showers likely after 2pm. Some thunder is also possible. Mostly cloudy, with a high near 31. West southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A 40 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 23. New snow accumulation of less than a half inch possible.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 34. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 25.
Friday
A slight chance of snow. Partly sunny, with a high near 37.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 44.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 34.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 42.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Marblemount WA
 48.65°N 121.55°W (Elev. 4573 ft)
11:27 am PDT Apr 13, 2026
1pm PDT Apr 13, 2026-6pm PDT Apr 19, 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