Time and Day: 0830 Saturday
The Snapshot: Light/moderate snow
this afternoon and evening at low snow levels. Very cold and dry starting
Sunday and lasting into next week.
The Science: A low pressure system will
approach from the NW down the BC coast Saturday afternoon. Short lived frontal
snowfall at cold temperatures will end Sunday morning after the front passes
and dry, cold air fills in from the NE. The low pressure becomes stationary
near the WA/OR border on Sunday, with high pressure off the coast. This should
support Fraser River outflow and unusually (except this December) cold
temperatures in Washington.
The Long Range: A stationary synoptic
pattern will funnel very cold air directly from the Arctic into the Pacific
Northwest. Typically, these scenarios bring cold temperatures but very little
precipitation and next week should be no exception. Expect cold and dry
conditions through the extended period. Regarding the upcoming holiday:
AFTER
THE YEAR OF THE MONKEY COMES THE YEAR OF THE ROOSTER, WHICH BEGINS JANUARY 28,
2017. THE ROOSTER BEING THE SIGN OF DAWN AND AWAKENING, TRIUMPH AND SUCCESS CAN
ONLY BE ACHIEVED AT THE PRICE OF HARD WORK AND PATIENCE IN 2017.
Precipitation Ending at 4am:
Today 24hr water = .5 Snow = 4-6"
Tomorrow’s 24hr water = >.10 Snow =
0-1"
Trend and Timing:
Light snow will begin Saturday afternoon and become
moderate before midnight. Snow will taper and end around daybreak
Sunday.
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24hr temperature ending at 4 am tomorrow:
Low: 16 High: 24
Freezing level: 1000'-Surface
Trend and Timing:
Freezing level and
temperatures will fall Saturday afternoon and evening behind the front.
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24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-15 W
Ridge Top: 10-25 W/SW, then light N
Trend and Timing:
Winds should shift from light westerly, to moderate with gusts
from the SW as the front passes Saturday night. Early Sunday morning ridgetop
winds will be light from the north.
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