MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Wednesday, February 26, 2020, 0830

Current Observations:

24hr Precipitation:        .09 swe, 1” snow

Temperature profile:     32 base, 28 ridge

Pass level winds:            light, westerly – gustier on the upper ridges.

Barometer:                    1025mb’s and inching up

Sky:  Pass level fog with broken midlevel clouds and snow showers.

Radar:   Intermittent snow showers falling at Stevens Pass with mostly dry conditions everywhere else.

The Forecast:  Diminishing snow showers today with partial clearing tonight.   Temperatures will be in the lower 30’s with warmer temperatures expected tomorrow and Friday.

The Science:  A weak front is passing over the crest this morning producing some intermittent snow showers.  The barometric pressure rises behind the front which will begin to dry up the precipitation.   Warm air advections from the south will make its way north over the next 24-36hrs pushing freezing levels to +-5000’ by tomorrow afternoon.  No significant moisture is expected through Friday noon.

The next weather feature of interest arrives last Friday with the arrival of a strong cold front.  Falling temperatures and snow can be expected on Saturday.  Early precipitation values Friday 10pm through Sunday 4am show +-1” swe, 10-12” snow.    

Long Range.  Snow on Saturday with Sunday trending dry. 

Confidence:  Good.  

Values from 4am today through 4am tomorrow.

Precipitation: Today 24hr water: .10 snow: 1    Tomorrow’s 24hr water: .10   snow: trace Trend and Timing: The snow showers will diminish today with mostly dry conditions setting up.

Temperature: Low: 28   High: 34 Freezing level: +-4000’ Trend and Timing:    Freezing levels will hover around the 4000’ elevation through tomorrow.  Freezing levels rise above 5000’ tomorrow afternoon.

Winds Base:  0-10 W Ridge Top: 5-10 W  Trend and Timing: Westerly flow will be the wind pattern through tomorrow.