MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Day and Time:  Friday 0630am

Current Observations:

24hr Precipitation: 0

Temperature profile: 19base, 15 ridges

Pass level winds: gusty and out of the west

Barometer: 1014mb’s and falling

Sky: OC  

Radar: Light snow beginning to fall.

The Forecast: While the low lands prepare for Snoageddon, Stevens Pass will only get a few inches.  Doesn’t seem fair.  Cold temperatures and light snow will persist tomorrow with Sunday trending dry.  

Long Range: Another round of light snow is expected on Tuesday with the middle of the week dry with partial clearing.  These cold temperatures will stick around through at least Wednesday with some warming expected later in the week. 

  

The Science: The well-advertised winter storm has begun its march.  This event will have a classic wraparound effect with the main moisture moving up the Columbia River basin.  Mission Ridge will get the good with the Cascade Crest on the fringes of the moisture.   

East/west pressure gradients will tighten on the backside of the system producing strong easterly winds through the Passes. Cold arctic air will also be pulled in keeping freezing levels very low.  Water densities could be -3% or lower.  Bust out those leaf blowers and brooms.

As the system moves south into Oregon over the next 24-36 hours, it will take most of the snow with it.   Therefore, expect Sunday and Monday to be mostly dry with clear periods.

    

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: .25  snow: 2-4 Tomorrow’s 24hr water: .25   snow: 2-4 Trend and Timing: Light snow is expected to fall through midnight tomorrow.

Temperature: Low: 8  High: 22 Freezing level: Sea Level Trend and Timing:    Freezing levels will drop to or even below Sea Level tonight. Temperature are expected to remain unseasonably low through the weekend.

Winds Base: 5-15 E Ridge Top: 10-20 E Trend and Timing: Winds will switch back to easterly today and strengthen overnight.  Strong easterly winds can be expected tomorrow.