MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Day and Time:  Monday 0700

Welcome April.

Current Observations:

24hr Precipitation:        0

Temperature profile:     34 base,  33 ridge

Pass level winds:            calm,  E

Barometer:                    1017mb’s falling

Sky:                               high clouds

Radar: Bands of high clouds moving north of Yakima with light moisture falling in the Columbian Gorge.

The Forecast: Mild temperatures again today with increasing clouds. Hit repeat for tomorrow with thickening clouds.  

Long Range:  Mixed rain and snow is expected on Wednesday and then again on Friday.   

  

The Science: Satellite images have an upper level low approaching the Oregon coast this morning.  The North Central Cascade Mountains will only get clouds with the moisture remaining to south.  Warm air will remain in place under SSE flow aloft through early Wednesday morning.

As the weak progresses, the jet stream begins to take a more northerly trajectory. Several storms developing with in the zonal flow will begin to track through the region starting on Wednesday.  There is cool air available for some mixing, so for now, expect a wet pattern with mixed forms for the second half of the week.

Forecast confidence:  24-36hrs = good.  Fair for long range.

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: <.10  snow: 0 Tomorrow’s 24hr water:<.   snow: 0 Trend and Timing: Mostly dry with a slight chance of a rain drop or two.

Temperature: Low: 32  High: 50 Freezing level: 7000’ – 6000’ Trend and Timing:    Freezing levels will remain high today and then slowly begin to fall tomorrow.

Winds Base: 0-5 E Ridge Top: 5-15 E gusty Trend and Timing: East flow will strengthen today.