2 Dec 2018

December 2, 2018


    YESTERDAY:

    Broken cloud Saturday morning.

    Breaks in the morning.

    Clear skies around noon.

    Clouds moved in later on in the afternoon.


Weather Observations for December 2, 2018  taken at 06:00 Hours.

2240 meters       -10, Winds were 10-20 KPH NNE--Horstman Hut
2180 meters       -10, Winds were 15-25 KPH NNE--Whistler Peak
1860 meters         -9, Winds were   5-10 KPH NE--Rendevous
1835 meters         -9, Winds were   5-10 KPH NE--Round House
1650 meters         -8, 0 cm of new, 0 cm in 24 hrs, Base 68 cm--Pig Alley
1565 meters         -7, 0 cm of new, 0 cm in 24 hrs, Base 32 cm--Catskinner
  660 meters         -4, Valley Temp, Max temp Yesterday was +3.9, 0.0 mm of precip recorded yest


FORECAST:

High pressure in a Northerly flow aloft will bring cold temperatures and clear skies for today. This trend will continue into Friday, and hopefully the high will begin shifting East by Friday night allowing a front onshore for Saturday/Sunday. In the mean time enjoy the sun! Awesome turns to be had above 1800 meters.


    GOES IR image from this am.


    High building, cold air coming from the Yukon.





    Fronts along the coast.


    Big lows over the Pacific.




    High pushing into the lows, may see some cloud Tuesday morning from the Southern low.



    AVALANCHE ACTIVITY:

    An inbounds avalanche at Jackson Hole buried 5 people, story below.                          JMR Photo

    No new avalanche activity to report locally.


    INFORMATION & OBSERVATIONS:

    0 Deg C Saturday morning at the base.

    Peak chair opened on Saturday.

    Saturday afternoon.

    Big picture on Saturday.

From Avalanche Canada MIN Reports:

Matier IcefallNov 30, 2018


From South Coast Touring:

Mitch Sulkers:
Observations from the past three days in the Whistler backcountry. Snow accumulations from 60-265cm encountered between 1900m and 2200m, depending upon aspect and elevation. Above 1950m on north aspects, rounding facets are the predominant basal layer, from 20-30cm deep. Where the snowpack is deepest (generally higher and on more northerly aspects) this rounding process is progressing well; in shallow regions, the facets tend to be less consolidated and may well be "fist" resistance (and hence a poor foundation). In areas from 1900 to 1970m, these facets are overlain with a fairly substantial melt-freeze crust from 181103. Few significant tests in recent stability evaluations, but expect variability again based on aspect, slope angle, and elevation. We occasionally got hard compression results, sudden planar, down as far as 90cm from the surface in deeper, higher elevation regions. Skiing remains very good in supported, higher terrain, with 20-30cm of near surface facets skiing very well. Be cautious in areas of irregular ground surface or small bushes, as these areas may have voids capable of swallowing a ski as one glides along...


ARTICLES:

Avalanche buries 5 at Wyoming Resort but no Injuries: Jackson Hole

Snow observations in Utah: December 1, 2018

Backcountry Advisory for Whistler Area: December 2, 2018

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