Time: 11:30
The
Snapshot: Snow changing to rain and then back to snow starting
tonight and lasting through Friday morning.
Drier conditions develop on Friday and continue through the weekend.
Atmospheric
Science: A low
pressure system approaching the PNW coast today will bring another round of precipitation
to the mountains tonight and tomorrow.
Warm SW air will accompany the front tonight rising freezing levels, A cold front will quickly follow tomorrow
with cool NW flow filling in and lowering freezing levels to around 4000’. East flow will play a part in the general
temper pattern.
4-7day
Long Range: Another
system slides down the coast over the weekend but does not appear to make it to
the mountains. Therefore, light scattered
snow showers with sun breaks can be expected for the weekend and early next
week. Warm southerly flow is expected to
bring high freezing levels (6000+) during the first half of next week.
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24hr Accumulative Precipitation Totals Starting at Noon Today:
Water by 4am = .5 Snow equivalent = 1-3
Total inches of water by noon tomorrow
= .75+
Total inches of snow by noon tomorrow
= 2-5”
Trend and Timing:
Snow will begin to appear late this
afternoon. Snow is expected to change
to rain tomorrow morning. Rain will switch
back to snow tomorrow afternoon with the passing of the cold front. An additional 4-8” can be expected by
Friday morning.
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24hr Base Area Temperatures (F) Starting at Noon Today:
Low: 30 High:
40
Trend and Timing:
Freezing levels will rise to 5000’
after midnight tonight. Temperatures
will then slowly decline through the day tomorrow with freezing temperatures
hovering near or just above Pass level.
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24hr Winds Speed (mph)/Direction Starting at Noon Today:
Base: 0-5 E shifting WSW
Ridge Top: 5-10 E shifting W
Trend and Timing:
East flow will hold through the night
and shift westerly tomorrow afternoon.
Strong gusty winds can be
anticipated tomorrow afternoon and evening with 40+mph gust possible.
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