MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Day and Time:  Friday 0700

Current Observations:

24hr Precipitation:        0

Temperature profile:     36 base, 35 ridge

Pass level winds:            calm, southeasterly

Barometer:                    1007mb’s and dropping

Sky:                               overcast

Radar: moderate mixed snow and rain showers along the western slopes with rain falling east of Moses Lake.

The Forecast: Wait for it………. mixed rain and snow today with snow tonight.  Hit repeat for tomorrow and Sunday.

Long Range:  Light showers will linger into Monday with a drying trend developing for the first half of the week.

  

The Science: A large swath of moisture, out ahead of an approaching frontal system, is just making landfall.  The triple point system, centered off of the Oregon coast will swing north of the next 24-36hrs.  The freezing levels are expected to bounce between 3500’ and 5000’ through the weekend.    

Storm totals between now and the end of the day on Sunday = 1.5”swe, 3-7” of snow above 4500’.

Forecast confidence:  Fair due to the timing of the fronts and mixing of colder air.  

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: .25-.5  snow: 1-2 upper mountain Tomorrow’s 24hr water: .5 -.75  snow: 2-4 upper mountain Trend and Timing: Light rain starts today and increases to mixed rain and snow tonight.

Temperature: Low: 32   High: 38 Freezing level: 5500’ – 4000’ Trend and Timing:    The freezing levels are expected to drop just below 4000’ late this afternoon and then spike back up to +-5000’ during the day tomorrow.

Winds Base: 5-10 W Ridge Top: 5-15 WSW Trend and Timing: Winds will shift WSW today with gusty periods likely.