Mountain Weather Forecast

Stevens Pass Mountain Weather Forecast

Day and Time: Saturday 0700

Current Observations:

24hr Precipitation:   .03” SWE / 0” snow

Pass temperature:  21

Pass level winds: 0-5 E

Barometer:  1017 and steady

Sky: Partly cloudy

Radar: Light-moderate showers in the north interior and Olympic Peninsula

The Forecast: Increasing clouds with light snow developing late Saturday. Moderate snow Saturday night and Sunday at relatively cool temperatures, with warming Sunday afternoon.

Long Range:  Moderate snow continues Sunday and Monday morning. A ridge of high pressure brings benign weather Monday afternoon and Tuesday. The next storm system arrives Wednesday, with the possibility of a low-land snow event taking shape.

  

The Science: Yet another triple point front is approaching Saturday morning. The “warm” portion will have little effect on Stevens Pass with cold air in place, east flow developing, and the elongated nature of the front not pushing in very aggressively today. Light snow begins tonight with post frontal showers driving orographic snow showers tonight and Sunday.

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: .5-.75   snow: 5-8” Tomorrow’s 24hr water: .75   snow: 8-10” Trend and Timing: Snow beginning after dark on Saturday, continuing overnight and Sunday morning. Tapering during the day Sunday then increasing again Sunday night.

Temperature: Low:  18   High: 25 Freezing level: 2000 Trend and Timing:    Steady cool temps thru Sunday morning.

Winds Base: 5-15 E, then W 5-15 Ridge Top: Variable, becoming WSW 15-20 Trend and Timing: Light east winds during the day Saturday, becoming westerly after midnight.