Stevens Pass
Mountain Weather Forecast
Day and Time: Sunday 0700
Current Observations:
24hr Precipitation: .64swe – 4” of snow
Temperature profile: 30f base, 24 ridge
Pass level winds: gusty, westerly
Barometer: 1008mb’s
and holding
Sky: OC
Radar: Lightly snowing along the
Cascade crest with dry conditions to the west and east.
The Forecast: The snow will continue today with cool
temperatures. Tomorrow and Tuesday will
be mostly dry with light rain possible on Wednesday.
Long
Range: Model
opinions begin to split on Wednesday with some showing light rain and others
showing clearing and high freezing levels.
All will be revealed in time.
The Science:
A cold front moved through last night
which is now moving into western Montana. Cool unstable westerly flow has
filled in with nice orographics now pushing through the Passes. Weak convergence zone(s) conditions are
expected to persist today.
A high pressure ridge will
develop tonight which will cut off the moisture and produce cooling and clearing
for tomorrow. Seasonally warm air begins
to creep back into the scene tomorrow; freezing levels by the end of the week
could peak above 8000’ with daytime high temperatures in the 50’s.
Forecast confidence: Good with changing convergence
conditions dynamics in play. Fair to
poor for long range outlook.
Values from 4am today through
4am tomorrow.
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Precipitation:
Today 24hr
water: .5 -.75 snow:
4-7
Tomorrow’s 24hr
water: .10 snow: 0
Trend and Timing:
Light to moderate snow will continue
today and taper off after midnight tonight.
Tomorrow will be mostly dry.
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Temperature:
Low: 24 High: 32
Freezing level: +-4000’
Trend and Timing:
Freezing levels will remain below 4000’
through early tomorrow morning.
Freezing level rise to or above 5000’ tomorrow afternoon.
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Winds
Base: 5-10 W
Ridge Top: 5-15 W
gusty
Trend and Timing:
Westerly flow will continue through
the next 24hrs and then shift easterly.
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