The
Snapshot: Clouds will thicken today with the approach the next
weather system. Snow begins late tonight
and continues tomorrow. There will be a
period of mixed snow and rain below 4500’ tomorrow afternoon.
The
Science: A strong warm
front packing a bunch of moisture will drop in from the NW tomorrow morning. Heavy snow is expected during the meat of
the day with periods of rain throughout. Freezing levels will bounce between 4k and 5k
with waves of snow and rain. The upper
ridges should see mostly snow.
Storm totals:
Water equivalent by 4pm Sunday could exceed 3”. 12-24” of snow. If we luck out with the freezing levels snow
totals could be hirer.
4-7day
Long Range: The main bulk
of the moisture will be over by Saturday night.
Light snow showers will continue through Sunday. A cold front arrives on Monday with lowering
temperatures and snow to start out the holiday week. High pressure builds over the PNW on Tuesday
for dry and clear weather expected to finish out the week.
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Precipitation:
Water
by 4am = .25 Snow equivalent = 2-4
Total
inches of water by noon tomorrow = .5-.75
Total
inches of snow by noon tomorrow = 6-10”
Trends and Timing:
Snow will develop around midnight
tonight and be relatively light to start.
Snow will intensify during the day with hopefully a good foot or more of
snow by day’s end. A period of rain
below the top of Hogsback can be anticipated tomorrow afternoon.
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Base Temp and Freezing levels:
Low:28 High:
34
Trend and Timing:
The freezing level should remain below
4000’ through at least noon tomorrow.
Temperatures will rise above freezing as the warm air mixes with the
cold air. Freezing levels will hover
around +- 4500’ through Sunday.
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Winds (mph)
Base: 5- 10 WSW
Ridge Top: 10-20 WSW
Gusty
Trend and Timing:
Winds will shift westerly this
afternoon. Winds will be fairly light
tonight. Strong WSW ridge top winds
can be expected tomorrow with the passing of the front. +40 mph winds will be possible.
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