0930 Friday:
The Snapshot: Dry and warm today with thickening clouds;
rain tomorrow changing to snow early Sunday morning, mostly dry and cooler on
Sunday, rain/snow Sunday night/Monday.
The Science: A moist storm system preparing to enter the region
will spread rain to the Cascade Mountains tomorrow. A cold
front will swing through late tomorrow night dropping freezing levels to +-4500’
therefore, some snow will be possible early Sunday morning. The main bulk of moisture begins to sags south of
Stevens Pass during the day on Sunday for a mostly dry day.
Long Range: A low-pressure
system tracking up the coast will bring a chance of mixed rain and snow early
Monday morning. The rest of next week
will be dry under a split flow pattern.
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Precipitation ending at 4am:
Today’s 24hr Water = .10 Snow = 0
Tomorrow’s 24hr Water = .75-1 Snow = 1-2
Trend and Timing:
Rain begins
after midnight tonight and will continue through late tomorrow night.
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24hr temperature ending at 4am
tomorrow:
Low: 36 High: 55
Freezing level:
8000’ 5000.’
Trends
and Timing:
Freezing levels will spike
near 9000’ today and then fall through the night to around 4500’. Daytime temperatures could reach +600 today.
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24hr Winds (mph) ending at 4am
tomorrow:
Base: 0-5 E
shifting W
Ridge Top: 0-10 ESE shifting SW
Trend
and Timing:
East flow
will shift SW overnight with the passing of the front. Expected periods of gusty ridge top winds
through tomorrow.
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JM
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