Stevens Pass
Mountain Weather Forecast
Day and Time: Wednesday 0700
Current Observations:
24hr Precipitation: .33swe,
1-3” of snow
Temperature profile: 32
base, 27 ridge
Pass level winds: moderate,
westerly
Barometer: 1022mb’s
and holding
Sky: OC
Radar: There are a few snow showers falling in Snohomish county with a long
fetch of moisture off shore.
The Forecast: Heavy
mountain snow and wind begins this afternoon with mixed rain anticipated
tomorrow.
Long
Range: Mixed rain and snow showers linger through Friday
with another strong snow storm taking shape for the weekend.
The Science:
First, there is an impressive blizzard tracking across the Midwestern plains
today - 40-50mph winds, 1-2’ of snow
with single digit wind chills….Yikes.
The Cascade Mountains will
get their own dose of wind and snow as a strong frontal system drives in from
the NW. This storm has all the fixings
for some significant snow…. frontal wave, convergence zone development, 20+mph
ridge top winds and plenty of moisture.
Tomorrow, a trailing warm
front will push freezing levels up above 4500’ with mixed rain and snow added
to the game. The moisture will diminish
to showers tomorrow afternoon but stick around through Friday. Another similar event is taking shape for
Saturday/Sunday – ie more snow.
Forecast confidence: Good – however, the convergence
zone dynamic is always a wild card.
Values from 4am today through
4am tomorrow.
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Precipitation:
Today 24hr
water: .75-1 snow: 8-10+
Tomorrow’s 24hr
water: .75 snow: 3-5
Trend and Timing:
Snow increases this afternoon. Rain will mix in below 4500’ tomorrow.
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Temperature:
Low:28 High: 34
Freezing level: 3500’ - 4500’
Trend and Timing:
The freezing levels will hover near
4000’ for the next 24hrs. Daytime
temperatures will recover just above freezing this afternoon and again
tomorrow.
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Winds
Base: 10-15 WNW
Ridge Top: 15-25 WNW
Trend and Timing:
WNW flow will strengthen today with
ridge top gusts topping 25mph.
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