Time and Day: 0630 Wednesday
The Snapshot: +5” of rain was recorded during the last 24hrs. Rain changing to snow this morning with
precipitation diminishing. Intermittent moderate
to heavy snow showers with generally cooler
temperatures expected for the rest of the week.
The Science: As of 2 am this morning, the leading edge of the
approaching cold front had just made landfall.
Temperatures are already beginning to fall with snow falling on the
upper mountain. Once the front moves
east of the mountains, the snow will
shift to showers and taper off. 3-5” of snow is possible before it ends later
today.
A low-pressure system churning just
off the NW coast will spin bands of
moisture (snow) into the Cascade Mountains tomorrow morning and then again on
Friday.
Long
Range: Another low-pressure system,
with cooler NW flow in tow, arrives on Saturday. As of now, storm total calculations are around a 1” of water /
12-14” of snow from Saturday noon through
Sunday 4 pm. Those number will surely mature as this
system develops further.
A weak high-pressure
system develops early next week for a dry and cold start to the new week.
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Precipitation
ending at 4 am:
Today’s
24hr Water = .5 Snow = 3-6
Tomorrow’s 24hr Water =
.25-.5 Snow
= 3-6
Trend and Timing:
Snow tapers off after 4 pm today. Snow showers
begin again early tomorrow morning and diminish
to light snow showers through the day. Hit repeat for Friday.
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24hr temperature ending at 4 am tomorrow:
Low: 26 High: 32
Freezing level: 4000’
-3500.'
Trends and Timing:
Freezing levels are on the decline and should drop
below 4000’ this morning. Freezing
levels should remain at or below Pass level for the remainder of the year.
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24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-10 WSW
Ridge Top: 10-20 W
Gusty
Trend and Timing:
Strong westerly winds will accompany this morning’s
front. Watch for ridge top winds
gusting +40 this morning and diminishing this afternoon.
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JM
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