The
Snapshot: Mostly dry today with perhaps a glimpse of the sun
from time to time. Snow arrives tomorrow
with freezing levels at or slightly above 4000’.
The
Science: The
high pressure ridge is making its way east of the mountains this morning, hence
the partial clearing. The long awaited
frontal system will drop in from the Gulf of Alaska tomorrow with snow reaching
the mountains around mid day. Warmer SW
flow aloft will push freezing levels above 4000’ tomorrow night into early
Friday morning. Light snow and or rain
showers will linger in the mountains on Friday.
4-7day
Long Range: Another
warm/cold frontal series is expected to reach the mountains late Saturday night
or early Sunday morning. Light mixed
rain and snow changing to snow is currently the assumption on Sunday.
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Precipitation:
Water
by 4am = 0 Snow equivalent = 0
Total
inches of water by noon tomorrow = >.25
Total
inches of snow by noon tomorrow = 1-3
Trends and Timing:
Today and tonight will be mostly dry
with snow starting to fall in the mountains around noon tomorrow. Watch for some possible freezing rain on
the roads tomorrow, especially on the east side.
Storm totals from noon tomorrow
through noon Friday are +-.75” of water or 5-8” of snow.
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Base Temp and Freezing levels:
Low: 24 High: 32
Trend and Timing:
East flow will keep surface
temperatures below freezing today.
Freezing levels will rise to around 4500’ by early Friday morning.
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Winds (mph)
Base: 5-10 E shifting SW
Ridge Top: 5-10 SE shifting SW
Trend and Timing:
East flow will briefly intensify today
as gradients strengthen. Winds will
shift SW with the approach of the front tomorrow. Once the front moves
through winds will shift more westerly.
Models are not showing excessive winds with this frontal system.
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