MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Sunday, November 24, 2019, 0900  

Current Observations:

24hr Precipitation:          .52 water,  3” on upper ridge

Temperature profile:      33 base, 29 ridge

Pass level winds:              moderate westerly

Barometer:                      1017mb’s and slowly rising

Sky:                                  Overcast

Radar:   Convergence showers in the Hwy 2 corridor and the I-90 corridor with dry conditions to the west.

The Forecast:   Moderate snow showers with cooling temperatures can be expected today.  Snow showers taper off tomorrow.

Long Range: A drying trend will develop for the Holiday period with little to no additional snow accumulation expected through the weekend.   

  

The Science:  The cold front that brought us this blustery weather is now heading into the intermountain west.  Cool unstable NW flow will keep orographic showers likely through the night.  A dry, cool air mass will descend from the north as the week progresses with little to no precipitation likely after Wednesday. Day time low temperatures will be in high teens with day time temperatures peaking in the mid to upper 20’s. 

Forecast confidence: Good to fair.

Values from 4am today through 4am tomorrow.

Precipitation: Today 24hr water: .25-.5   snow: 3-5 Tomorrow’s 24hr water: .10  snow: trace Trend and Timing: Moderate snow showers will persist today with precipitation tapering off tomorrow.

Temperature: Low: 26   High: 33 Freezing level: 4500’ – 3000’ Trend and Timing:    Freezing levels will continue to slowly fall through the day.

Winds Base: 5-10 NW Ridge Top: 5-10 NW Trend and Timing: Winds will diminish today with a NW flow pattern developing.