Time and Day: 0700
Friday
The Snapshot: It’s 320f and snowing this morning with 3” of new snow. Mixed
rain and snow is expected today with a
short dose of moderate snow tonight. Passing snow showers with sun breaks can be
anticipated for the weekend.
The Science: A nice batch of moisture ahead of the
approaching cold/occluded front is currently in the mountains. A bit of rain below 4500’ will be added to
the mix once the day begins to warms up. Radar
has the back boundary of the moisture just east of the Olympics with the front
still offshore.
The front is
timing out to pass east of the Cascade Crest early tonight with good westerly flow and lowering freezing levels
filling in. Hopefully, we will get a few inches of new snow to report on
tomorrow morning. A weak high pressure
ridge between systems will produce clear periods but also keep the chance of
snow showers possible into early Sunday
morning.
The Long Range: The weather
for the first full week of spring will continue to be active with the snow/rain
game continuing throughout. There are
signs of a pattern change late next week with high pressure developing off of the
Oregon/California coast – this could
be the start of a prolonged drying trend for the PNW, or not.
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24hr Precipitation
ending at 4am:
Today 24hr water = .5-.75
snow = 3-5
Tomorrow’s 24hr water
= .25-.5 snow = 2-5
Trend and Timing:
Snow this morning
shifting to mixed rain and snow through the day. The precipitation diminishes to light
showers tomorrow.
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24hr temperature ending at 4 am:
Low: 28 High:
38
Freezing level: 4500’ –
3500’
Trend and Timing:
Freezing levels will peak
near 4500’ this afternoon and then begin to fall tonight.
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24hr Winds (mph) ending at 4 am:
Base: 0-5 ESE
Ridge Top: 5-10 SE
Trend and Timing:
Light easterly winds
shift southerly then westerly over the next
24hrs.
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jM
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