National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

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

Chinook Pass WA

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

  • Today

    Today: Rain and snow likely, mainly between noon and 1pm. Partly sunny, with a high near 42. Southwest wind 8 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: A chance of rain and snow before 11pm, then a slight chance of snow after 2am. Mostly cloudy, with a low around 30. South southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Snow, mainly after 11am. High near 39. Wind chill values between 24 and 32. Southwest wind 8 to 11 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 39 °F

    Snow

  • Tuesday Night

    Tuesday Night: Snow. The snow could be heavy at times. Low around 26. West wind 9 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 26 °F

    Heavy Snow

  • Wednesday

    Wednesday: Snow. High near 35. West wind 7 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 35 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow, mainly before 11pm. Low around 23. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Snow then
    Chance Snow

  • Thursday

    Thursday: A 40 percent chance of snow, mainly after 11am. Partly sunny, with a high near 38. Little or no snow accumulation expected.

    High: 38 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before 11pm. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Rain and snow likely, mainly between noon and 1pm. Partly sunny, with a high near 42. Southwest wind 8 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tonight
A chance of rain and snow before 11pm, then a slight chance of snow after 2am. Mostly cloudy, with a low around 30. South southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday
Snow, mainly after 11am. High near 39. Wind chill values between 24 and 32. Southwest wind 8 to 11 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow. The snow could be heavy at times. Low around 26. West wind 9 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Wednesday
Snow. High near 35. West wind 7 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow, mainly before 11pm. Low around 23. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday
A 40 percent chance of snow, mainly after 11am. Partly sunny, with a high near 38. Little or no snow accumulation expected.
Thursday Night
A chance of snow before 11pm. Mostly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 43.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 49.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chinook Pass WA
 46.86°N 121.53°W (Elev. 3973 ft)
Last Update:
11:27 pm PDT Apr 12, 2026
Forecast Valid:
6am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation