Stevens Pass
Mountain Weather Forecast
Day and Time: Friday 0600
The Snapshot: The Puget Sound Convergence Zone came through last
night with 14” of new snow. Snow showers will continue today and taper off tomorrow
morning. With temperatures hovering at or
just below freezing it is good base making.
Current Observations:
Precipitation:
It is lightly snowing. .93” of water
converts to 14” of snow, 11 of which
fell since 4pm yesterday.
Pass
temperature: 31
Winds:
5-10 W
Barometer: 1005mb
and slowly rising
Sky:
Overcast and dark
Radar:
The radar shows a blob of moisture south
of Everett moving NE into the mountains.
The Forecast: The snow will continue today and diminish
overnight. The weekend will be mostly
dry with sun breaks.
Long
Range: The next push of moisture
with rising freezing levels arrives on Monday.
The snow vs rain dynamic is still in question. Light snow showers with dry periods will wrap
up the week.
The Science:
There are no defined warm or cold fronts
approaching, just nice unstable westerly flow. A strengthening high pressure ridge will shut
off the moisture tomorrow and provide a 24-48hr dry period with partial
clearing.
Monday/Tuesday: A large low pressure system with a strong SW
fetch of moisture component will begin to move in on Monday. East flow will develop as cool air from the
weekend settles in the eastern basin.
Time will tell how the warm air advection mixes with the cooler east
flow. Stay tuned.
Values from 4am today through
4am tomorrow.
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Precipitation:
Today 24hr
water: .75+ snow: 8-10
Tomorrow’s 24hr
water:.10 snow: 1-2
Trend and Timing:
Snow ends just after 4am tomorrow.
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Temperature:
Low: 28 High: 34
Freezing level: +3500’
Trend and Timing:
Freezing levels will slowly fall to
around 3500’ today and hold there through Sunday morning.
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Winds
Base: 5-10 W
Ridge Top: 5-15 W
Trend and Timing:
Westerly flow will persist through
early Sunday morning.
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