Mountain Weather Forecast

Stevens Pass Mountain Weather Forecast

Day and Time: Saturday 0645

Current Observations:

24hr Precipitation:   .65” SWE / 3” snow

Pass temperature: 31 base / 26 ridgetop

Pass level winds: Light

Barometer:  Steady at 1007

Sky: Mostly cloudy

Radar: Scattered showers in the Puget Sound, heavy rain off the coast

The Forecast: Moderate snow and gusty winds during the day Saturday. More snow/mixed precip Sunday at slightly warmer temperatures.

  

The Science: Active weather will continue across the PNW for the next few days. Last night’s system brought a few hours of heavy rain that switched to snow late-afternoon as the cold front swept through. A pair of fast moving, organized systems will move across the region during the day Saturday and Sunday. The first should begin to impact Western Washington this morning, with the moisture already visible on radar west of the Cascades. This should bring moderate snow to Stevens Pass, and gusty winds. There will be a relative lull overnight, with snow tapering off after dark. The next system moves onshore in Northern Oregon Sunday morning. Light to moderate snow can be expected during the day Sunday, at slightly warmer temperatures, so mixed precip is more likely.

Long Range:  Zonal westerly flow will bring cloudy conditions and a chance of snow on Monday, Tuesday currently looks mostly dry with brief ridging. This will be short lived with more active weather for the rest of the week at relatively cool temperatures.

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: .5-.75  snow: 4-6” Tomorrow’s 24hr water: .25-.5   snow: 3-5” Trend and Timing: Moderate snow during the day Saturday, with a brief break overnight. Snow/rain mix on Sunday.

Temperature: Low: 27    High: 36 Freezing level: 4000’ Trend and Timing:    Daytime warming will kick temps above freezing despite free air freezing levels.

Winds Base: E 5-10, then W 10-15 Ridge Top: ESE 5-10, then WSW 10-20 with gusts Trend and Timing: Wind direction should shift midday, becoming gusty.