Stevens Pass Mountain Weather Forecast
Date: Monday, February 3, 2020
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Current Observations:
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24hr Precipitation: .1” SWE /
3” snow
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Temperature profile: 23
base / 20 upper mtn
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Pass level winds: Light westerly
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Barometer: 1016 steady
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Sky: Broken clouds
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Radar: Light convergence showers between
I-90 and Highway 2
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The Forecast:
Cool and calm today with sunshine. Increasing clouds tomorrow with heavy snow
starting tomorrow night.
The Science: Another relatively
quiet day (weather-wise anyways) is in store for today. North/northwesterly
upper level flow will bring continued cool temperatures and mostly clear skies
to the PNW.
Things get interesting Tuesday night as a strong warm front
approaches in westerly flow. Heavy precipitation in the form of snow will begin
after dark on Tuesday and continue on Wednesday. Temperatures will begin to
rise with the moisture on Tuesday but should remain favorable for snow thru
much of Wednesday. Further warming Wednesday afternoon and Thursday will occur
with a warmer airmass pushing out the cold air. Time will tell what the precip
type is Wednesday night.
Long Range: Impressive amounts of
precipitation will fall between Wednesday and Friday with the jet stream riding
over high pressure in the Pacific and taking aim at Washington State. Freezing
levels rise just above pass level Thursday, then fall again Friday so precip
type will likely be mixed at times in the base area. A strong cold front approaches
on Saturday bringing cooling and more snow.
Confidence: Good
for the next 36 hours. Poor for precip type the second half of the week but
good for impending active weather.
Values from 4am today through 4am
tomorrow.
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Precipitation:
Today 24hr
water: LT .10 snow: 0-2”
Tomorrow’s 24hr
water: 1.25-1.5 snow: 12-16”
Trend and Timing:
Dry today
and most of the daylight hours Tuesday, heavy snow Tuesday night and
Wednesday.
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Temperature:
Low: 19 High:
26
Freezing level: 1000’
Trend and Timing:
Steady
cool temps with some daytime warming today.
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Winds
Base: W 0-5
Ridge Top: W 5-10
Trend and Timing:
Light
winds expected thru Tuesday morning.
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