0830 Friday:
The Snapshot: Another beautiful, cool crisp
day is in store for the Cascade Mountains. Prepare
for a change next week.
The Science: This stable air mass
will remain over the region through at least Tuesday of next week. Warm southern advection will begin to raise
freezing levels on Sunday. The high pressure
ridge will slowly drift east during the next few days, but will continue to
block any moisture from entering the Cascades until the middle of next week.
4-7day
Long Range: The Change: The high pressure is expected to weaken and continue
its journey east on Wednesday. This will
open the door for a series of systems to track through the PNW starting on Wednesday. That is the good news; the bad news is that
these systems are on the warm side so we will be playing the rain with mixed
snow game. More details on Monday.
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24hr precipitation ending at 4am
tomorrow:
Water = 0 Snow = 0
Trend and Timing:
0
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24hr temperature ending at 4am tomorrow:
Low: 14 High:
24
Freezing level: +/-1500’
Freezing Level Trends and Timing
Temperatures will remain low through tomorrow.
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24hr Winds (mph) ending at 4am tomorrow:
Base: 5-10
E
Ridge Top: 5-15+ E
Trend and Timing:
Brisk east
off shore flow will continue through late tomorrow night. Wind shifts SSE on Sunday.
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JM
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