MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Day and Time: Tuesday 1130am

Current Observations:

24hr Precipitation: Snowing.  16” of snow, storm water equivalent (SWE) = 8-10%

Temperature profile: 33base, 31 ridges

Pass level winds: Westerly 5-15mph gusting +20 <5000’.

Barometer: Bumped up to 1004mb’s

Sky: OC w/fog

Radar:  Scattered mixed rain and snow showers below 4500’.  

The Forecast:  Moderate to heavy snow showers today with temperatures falling slightly tonight.   There will be a brief break in the moisture tomorrow with another mixed snow and rain event anticipated to begin tomorrow night.   

Long Range: Mild temperature with diminishing precipitation for Thursday.  Cooler temperatures with light intermittent snow showers will be on the menu for Friday and Saturday.   

  

The Science:  The cold front that passed over Stevens around 730 this morning is now heading through Eastern Washington.  Westerly flow will strengthen today with good convergence showers developing.

Attention shifts to a low pressure system rapidly moving up the coast.  This will bring a spike in freezing levels (+-5000) tomorrow night/ early Thursday morning.   A strong cold front is expected to swing in and save the day Thursday afternoon.  Snow showers with freezing levels +-2000’ will lead us into the weekend.

  

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: 1  snow: 8-12 Tomorrow’s 24hr water: .5  snow: 3-5 Trend and Timing: Moderate to heavy convergence showers will persist through the next 24 hrs

Temperature: Low: 30    High: 34 Freezing level: +-4500’ Trend and Timing:    Freezing levels will hold +- 4500’ today and then begin to fall to +- 4000’ overnight.

Winds Base: 5-15 W Ridge Top: 10-20+ W Trend and Timing: Westerly winds will strengthen today with ridge top gust +25 possible.