MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Wednesday, November 27, 2019, 0830a

Current Observations:

24hr Precipitation:      .13 SWE, 2” of snow

Temperature profile:    21 base,

Pass level winds:            Moderate to strong easterly

Barometer:                   997mb’s and falling

Sky:                               Obscure and overcast

Radar:             Snow showers lifting north through the center of the state.

The Forecast:  The main feature of today will be the wind.  30+ mph winds will persist today.  Snow showers will continue through the night.  A clearing trend begins tomorrow with mostly dry and sunny conditions expected on Friday and Saturday.

Warning: Wind chill temperatures could be at or below 0.

Long Range: The next chance of snow will be early Sunday morning with the first week of December starting out dry.   

  

The Science:  A strong storm tracked into Oregon and then shifted north into the intermountain west last night.  Spin off snow showers dusted the east slopes with a few inches of snow.  The storm is expected to continue its trek into northern Montana and southern Alberta today.   Spin off showers will continue today with strong easterly /offshore flow.

Clearing and drying begins tomorrow as a cold, dry air mass gets pushed into the region from the NE.

A weakening low pressure system will spin more snow showers through the state on Sunday. Rising freezing levels will also accompany the weekend weather pattern.  

Confidence: good.

Values from 4am today through 4am tomorrow.

Precipitation: Today 24hr water: .5 snow: 3-6 Tomorrow’s 24hr water: .10  snow:  trace Trend and Timing:

Temperature: Low: 14   High:  22 Freezing level: +-500’ Trend and Timing:    Early morning temperatures will be in the mid-teens with highs in the lower 20’s.  Wind chill temperatures will be near or below 0.

Winds Base: 10-20 E gusts + 30 possible Ridge Top: 15-30 E  + 40 Trend and Timing: Strong sustained easterly winds will continue for the next 24-36hrs.