0800 Friday:
The Snapshot: Thickening clouds today with snow tonight and tomorrow, dry Sunday/Monday.
The Science: Clouds are thickening over the Pacific NW this
morning in response to the incoming winter storm. The anticipated strong frontal system is
maturing and still on track to bring a good dose of snow to Stevens Pass. The main event will be tomorrow as the Puget
Sound Convergence Zone gears up.
Freezing levels could drop as low as 2500’ tomorrow but will rise to +-
4500’ on Sunday. The moisture gets cut
off early Sunday morning as an upper-level ridge forms. Therefore, expect partial clearing to develop
on Sunday and Monday with little to no additional precipitation.
Long Range: Another, less
potent front arrives late Monday night for a few more inches of snow for
Tuesday. Warming and drying is expected
to develop after Tuesday.
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Precipitation ending at 4am:
Today’s 24hr Water = .5 Snow = 3-5
Tomorrow’s 24hr Water = +1. Snow
= 12-15
Trend and Timing:
Mixed rain
and snow is expected to develop after 5pm tonight and change to all snow around
midnight. Snow intensifies tomorrow
as convergence conditions strengthen.
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24hr temperature ending at 4am
tomorrow:
Low: 46 High: 24
Freezing level:
7000’ 3000.'
Trends
and Timing:
Daytime
temperatures will climb into the mid to upper 40’s again today. Freezing levels will drop to 4000’ around
midnight tonight and will continue to descend tomorrow to +- 3000’.
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24hr Winds (mph) ending at 4am
tomorrow:
Base: 5-10 W
Ridge Top: 5-15
W gusty
Trend
and Timing:
Winds don’t
appear to be extremely strong with this storm but expect gusty ridge top
winds with the convergence tomorrow.
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JM
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