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

White Pass (TWHIT)

Lat: 46.638°NLon: 121.39°WElev: 4498.0ft.

NA

N/A

Humidity 70%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint N/A
Visibility 1.24 mi
Last update 03 Apr 10:56 AM PDT
Extended Forecast for

3 Miles SSW Chinook Pass WA

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

    Overnight: A slight chance of snow between 3am and 5am.  Mostly cloudy, with a steady temperature around 36. Southwest wind around 9 mph, with gusts as high as 22 mph.  Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: Snow, mainly after 11am.  High near 41. Southwest wind 9 to 13 mph, with gusts as high as 32 mph.  Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 41 °F

    Snow Likely
    then Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before 4am. The snow could be heavy at times.  Low around 29. South southwest wind 8 to 13 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 29 °F

    Heavy Snow

  • Wednesday

    Wednesday: A chance of snow before 11am, then snow showers after 11am. Some thunder is also possible.  High near 36. Wind chill values between 21 and 27. West wind 7 to 11 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 36 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow, mainly before 11pm.  Low around 24. West wind 7 to 11 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Snow then
    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow after 11am.  Partly sunny, with a high near 40. Little or no snow accumulation expected.

    High: 40 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow before 11pm.  Partly cloudy, with a low around 27. Little or no snow accumulation expected.

    Low: 27 °F

    Chance Snow
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of snow between 3am and 5am. Mostly cloudy, with a steady temperature around 36. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tuesday
Snow, mainly after 11am. High near 41. Southwest wind 9 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow, mainly before 4am. The snow could be heavy at times. Low around 29. South southwest wind 8 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Wednesday
A chance of snow before 11am, then snow showers after 11am. Some thunder is also possible. High near 36. Wind chill values between 21 and 27. West wind 7 to 11 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow, mainly before 11pm. Low around 24. West wind 7 to 11 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday
A 30 percent chance of snow after 11am. Partly sunny, with a high near 40. Little or no snow accumulation expected.
Thursday Night
A 30 percent chance of snow before 11pm. Partly cloudy, with a low around 27. Little or no snow accumulation expected.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Partly sunny, with a high near 52.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 38.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 50.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 36.
Monday
Rain and snow likely. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Chinook Pass WA
 46.84°N 121.52°W (Elev. 4052 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