Time and Day: 0630 Friday
The Snapshot:
4” of new snow with a brief convergence zone overnight. Moderate snow today and
tonight with another round of lesser amounts Saturday night.
The Science: An occluded front with a parent low centered south of
the OR/WA border is making its way ashore this morning. Radar shows heavy
precipitation to our west. Moist westerly upper-level
flow should bring moderate to occasionally heavy snow with lowering freezing
levels to Stevens Pass today and tonight.
The Puget Sound Convergence Zone will play a factor in snow totals
tonight and early tomorrow morning. High
westerly winds will also be in play with this storm.
The Long Range: Models are backing down on the amplitude of the high-pressure ridge for next week, currently showing the North
Central Cascades under continued NW upper-level flow, keeping snow in the forecast.
Stay tuned.
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Precipitation Ending at 4am:
Today 24hr water = .75 Snow = 6-10 +
(convergence)
Tomorrow’s 24hr water = .25 snow = 2-4
Trend and Timing:
Snow should
pick up after daybreak Friday morning. Steady snow showers with possible
heavier snow in convergence Friday afternoon through daybreak Saturday. Moderate
snow showers will continue Sunday.
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24hr temperature
ending at 4 am tomorrow:
Low: 22 High:
30
Freezing level: 3000’ – 2000.'
Trend and Timing:
Snow level is
currently at 3000’, with cooling behind the
front, temperatures should drop further overnight into Saturday
morning.
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24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-10 W gusty
Ridge Top 10-20 W sustained with gust
to 40 possible.
Trend and Timing:
Winds will
pick up this morning and remain strong and gusty from the west through
Saturday midday.
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DV
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