Stevens Pass Mountain Weather
Forecast
Date and Time: Tuesday 112/2019 0730
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Current Observations:
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24hr Precipitation: <
.10 of light rain
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Temperature profile: 34base,
32 ridge
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Pass level winds: light,
westerly
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Barometer: 1015mbs and falling
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Sky: Overcast
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Radar:
Wide spread rain west of the crest with mixed rain and snow tapering
off along the east slopes.
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The Forecast: Rain today tapering
off this afternoon. Partly cloudy
tomorrow with very light passing rain showers possible.
Long Range: Wednesday and Thursday will be
mostly dry with the next round of moisture arriving early Friday morning. See below for Friday’s synopsis.
The Science: Moisture out ahead of a stationary front will
slowly proceed east today with damp conditions expected for the mountains. The front is slowly occluding so temperatures
and freezing levels should remaining fairly stable with the passing of the
front – if the front even makes to the crest.
Pockets of cooler air are settling in the valleys along the east slopes
of the North Cascades; so expect some snow at the lower elevations.
Friday:
A strong moist cold front will arrive Friday morning with moderate to
heavy mixed rain and snow. Warm SW flow
will bring freezing levels back up on Saturday with another wet system possible
on Sunday. Long range models begin to
diverge significantly beyond Sunday, but it is safe say that we are entering into
an active weather pattern.
Confidence: Good.
Values from 4am today through 4am tomorrow.
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Precipitation:
Today
24hr
water: <.25
snow: trace on upper ridge
Tomorrow’s
24hr
water: <.
10 snow: 0
Trend and
Timing:
Light rain at Pass level will taper off later this afternoon. Mostly dry tomorrow with some light precipitation
possible.
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Temperature:
Low: 32 High: 40
Freezing
level: +-5000’
Trend and
Timing:
Freezing levels will hover around 5000’ through tomorrow.
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Winds
Base: 0-10
W
Ridge
Top: 5-10 W
Trend and
Timing:
Light to moderate westerly flow will continue through tomorrow.
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