Time and Day: 0800 Wednesday
The Snapshot: Rain begins today with a
series of strong storms poised to hit the PNW through the weekend. Snow
will be confined to the high country above 6000’ today.
The Science: This morning’s radar has a cold front pushing a band
of moisture on to the west slopes of the mountains. This system is expected to weaken as it
drifts over the Cascade Crest later today.
Tomorrow will be relatively quiet with a progressive onshore flow
pattern bringing heavy rain and high winds to Stevens Pass Friday. Friday’s strong warm front will push snow
levels above +-7000’, so no snow is expected. Several embedded frontal systems will keep the
rain pumping through late Sunday.
Weekend rain totals from 4am Friday through 4pm Sunday could exceed 5”.
Long
Range: A cooler and drier airmass
drops in from the north early next week.
Freezing levels will likely drop below 4000’ but with little precipitation. There will be a chance of some light snow on
the tail end of this storm cycle late Sunday night or early Monday morning.
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Precipitation
ending at 4am:
Today’s
24hr Water = .5 Snow = 0
Tomorrow’s 24hr Water = >.25
Snow = 0
Trend and Timing:
Rain begins this morning and tapers off
tomorrow. Spotty showers through
tomorrow with heavy rain starting early Friday morning.
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24hr temperature ending at 4am tomorrow:
Low: 36 High:
42
Freezing level: 6000.'
Trends and Timing:
Temperatures will hold steady around +-400f for
the next few days. Freezing levels
will rise as the weekend storms approach.
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24hr Winds (mph) ending at 4am tomorrow:
Base: 0-5 E
Ridge Top: 5-10 ESE
Trend and Timing:
Weak easterly flow will shift westerly tonight and
strengthen on Friday. High wind
advisories are beginning to develop for the weekend storms.
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JM
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