Time and Day: 0900 Saturday
The Snapshot: This very complex weather system will continue to
bring a mixed bag of snow and rain to Stevens Pass into next week.
The Science: A weak cold front that is slowly passing over
the mountains this morning, has temporarily lowered the freezing levels to
around 4000’. An elongated SW oriented
low-pressure system developing behind the front will push freezing levels back up
and begin to break up the flow of moisture later today. Cold air arrives tomorrow morning with a
short period of moderate snow changing to snow showers. The weak Puget Sound Convergence zone is
expected to develop tomorrow that will help intensify snow showers.
Long
Range: The
show starts all over on Monday with snow changing to rain and then back to snow
on Tuesday. A cooler and drier weather pattern
will end the week.
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Precipitation
ending at 4 am:
Today’s
24hr Water = .5 Snow = 1-3
Tomorrow’s 24hr Water = .75
Snow = 5-8
Trend and Timing:
Mixed snow and rain changing to rain showers this
afternoon. Moderate snow tomorrow
morning changing to intermittent snow showers tomorrow afternoon.
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24hr temperature ending at 4 am tomorrow:
Low: 24 High:
40
Freezing levels: 6000’ - 2500.'
Trends and Timing:
Freezing levels will spike up to near 6000’ today
and then quickly descend to 3000’ late tonight. Surface temperatures will fall to lower 20’s
after 4 am tomorrow morning.
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24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-10 SE
Ridge Top: 5-15
S gusty
Trend and Timing:
Winds shift southerly today. Ridge top winds will remain active through
the weekend.
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JM
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