27 Nov 2017

November 27, 2017


    AVALANCHE ACTIVITY:

    Natural cycle yesterday morning up to Sz 2.5 in alpine terrain. There were some cornice drops.



    YESTERDAY:

    Warm wet and windy early Sunday morning.


    There were a few breaks as the warm front exited.

    Cold front pushed in at around 10:00 Hrs. Temperatures dropped quickly in the alpine.

    Snow accumulated into the afternoon. 2 cm of new at 1550 m by 14:00 hrs, 4 cm at 1660 m.

    Breaks later in the afternoon with cool temps, -6 at 1860 meters by 16:30 Hrs.

    Mount Currie in some nice light Sunday at 16:00 hrs.


    Some colour just before sunset.



Weather Observations for November 27, 2017 taken at 06:00 Hours.

2180 meters    -9, Winds were 35-50 KPH SSW --Whistler Peak
1835 meters    -7, Winds were 20-40 KPH SSW --Roundhouse
1660 meters    -5, 1 cm of new, 5 cm in 24 hrs  Base 128 cm --Pig Alley
  660 meters   +1, Valley Temp, Max Temp Yesterday was +8.0, 23.0 mm of precip recorded

    As of 07:00 Hrs this am we have broken cloud and unlimited visibility.


FORECAST:

A weak upper level trough will bring mostly overcast skies to the area today in a Westerly flow aloft.
There is some ridging expected South of our zone so we might see some breaks. Intermittent scattered flurries are also possible with the FL hovering in the 800 meter range. There is an impulse of precip expected tonight into Tuesday morning with moderate snow amounts. It appears that the next few frontal bands will be drier than forecasted for on Sunday. Guesstimates: 8-12 cm by Tuesday morning, 15-20 cm by Wednesday morning, 5-10 cm by Thursday morning.


   GOES IR image this am, drier than most of the models were forecasting.

     An upper level trough will bring mostly cloudy conditions in a Westerly flow aloft for Monday.

    Impulse of precip early Tuesday morning.


    Cooler temperatures for Tuesday.


OBSERVATIONS & INFORMATION:

    Moist snow for first turns Sunday morning.

   Variable weather conditions during the day, from 0 at 2240 meters at 07:00 hrs to -8 at 16:00 Hrs.

    New snow did improve the skiing.

    Sunday afternoon. Breaks on the way.

    Big picture Sunday. Looks like a drying trend.

    Cold enough Sunday afternoon for snow guns to turn on.


ARTICLES:

Early Season Snowpack: Southern Whitefish Range

Anchorage Ski Community mourns man killed in Hatcher Pass Avalanche: Alaska

The Fall so Far: Cliff Mass Weather Blog


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