Time and Day: 1030
Tuesday
Apologies for the late forecast, avalanche
control this morning.
The Snapshot: Wind
with moderate to heavy snow showers today.
Dry with some warming tomorrow, light snow on Thursday.
The Science: Strong westerly winds has filled in behind the
cold front that passed east of the Cascade Crest earlier this morning. The Puget Sound convergence zone has formed and
will produce high winds and moderate to heavy snow through the day. Pressure gradients will ease after sunset which
will bring and end to the wind and the snow.
Warm SW flow
coupled with a weak high pressure ridge will produce a relatively benign day tomorrow
with mild temperatures and sun breaks. Quite the contrast to today.
The Long Range: A low-pressure
system sliding down the BC coast will bring another chance of snow on Thursday
and then again on Friday. These systems
are not packing much of a punch but will produce some nice new snow heading
into the weekend.
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Precipitation
Ending at 4am:
Today 24hr water =
.5-.75 Snow = 6-10
Tomorrow’s 24hr water
= 0 snow = 0
Trend and Timing:
Snow will taper off
after 7pm tonight with little to no
additional precipitation after midnight.
Dry tomorrow.
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24hr temperature ending at 4 am tomorrow:
Low: 26 High:
30
Freezing level: 3500’
-4000’
Trend and Timing:
Temperatures will cool
off a bit today and tonight with freezing levels inching toward 4000’
tomorrow. Surface temperatures could
rise above freezing tomorrow with the aid of the sun.
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24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-15 W
Ridge Top: 10-25
W gusty +40
Trend and Timing:
Westerly winds will
remain strong through early afternoon and then begin to diminish after
midnight. Wind shifts easterly
tomorrow afternoon.
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jM
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