Mountain Weather Forecast

Stevens Pass Mountain Weather Forecast

Day and Time: Sunday 0645

Current Observations:

24hr Precipitation:   0”

Pass temperature:  28 base area/ 24 Tye Mill/ 27 Brooks

Pass level winds: Light, easterly

Barometer:  Steady around 1020

Sky: Clear with intermittent fog

Radar: Clear with low level fog

The Forecast: Inversion conditions continue today and Monday with locally cool temperatures, east winds, and intermittent fog layers. As the inversion layer ebbs and flows, clear skies and periods of above freezing temperatures can be expected.

Long Range:  The high pressure begins to break down Tuesday, with a weak frontal system approaching Wednesday. Active weather returns for the end of the week with snow levels looking close to seasonal norms.

  

The Science: The graph below (taken from NWAC’s weather station graphing tool)

 highlights the current inversion conditions with Paradise (Mt. Rainier) reaching 47 degrees yesterday! High pressure remains anchored over the PNW today, with east flow thru the passes providing another day of locally cool temps with warm air aloft.   

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: 0  snow: 0 Tomorrow’s 24hr water: 0  snow: 0 Trend and Timing: No precipitation is expected in the state of Washington for at least 48 hours.

Temperature: Low:  24   High: 32 Free Air Freezing level: 9000’ Localized Freezing Level: 4500-5000’ Trend and Timing:    Inversion conditions continue for the forecast period.

Winds Base: E 5-10 Ridge Top: E 5-15 Trend and Timing: East winds continue thru Monday.