8 Dec 2018

December 8, 2018

    YESTERDAY:

    Friday morning.

    Some high cloud around but mostly Blue Bird in the am.

    On the White Side!!

    Certainly less clouds to the North.

    Castle Towers with some background cloud Friday afternoon.

    Clouds were moving in later in the day.


Weather Observations for December 8, 2018  taken at 06:00 Hours.

2240 meters       -6, Winds were 25-35 KPH SE--Horstman Hut
2180 meters       -5, Winds were 25-35 KPH S--Whistler Peak
1860 meters       -4, Winds were   5-20 KPH SSW--Rendevous
1835 meters       -3, Winds were 10-20 KPH SE--Round House
1650 meters       -4, trace of new, trace in 24 hrs, Base 59 cm--Pig Alley
1565 meters       -3, trace of new, trace in 24 hrs, Base 29 cm--Catskinner
  660 meters       -7, Valley Temp, Max temp Yesterday was +0.2, 0.0 mm of precip recorded yest


    As of 07:00 hrs this am we have overcast skies, variable visibility, and snowing very lightly.

FORECAST:

A weak front is passing through our zone in a South/Southwesterly flow aloft. The freezing level will likely top out at 800 meters this afternoon with unsettled weather as a very weak ridge develops behind the exiting cold front. More cloud and possible flurries tonight. Some forecasts are calling for mostly cloudy skies so time will tell. A more vigorous Pacific front will push through on Sunday with light to moderate precipitation, the FL will likely spike at around 1600 meters but drop back down to 1000 m by Sunday night. An upper level trough develops for Monday with some showers and a mix of sun and cloud. Another front will push through on Tuesday with moderate precipitation at times heavy with strong winds. Another break is expected on Wednesday with another front on Thursday. Cooler temps are expected by Tuesday into Thursday. Guesstimates: trace to 2 cm by Sunday morning above 800 meters, 20-30 cm by Monday morning above 800 meters, 2-4 cm by Tuesday morning. Depending on the track of the front on Sunday we could get as much as 35 cm, but the brunt of the precip will likely be just South of here.



     GOES IR image from this am, weak front still off the coast.

    High to the South may bring unsettled weather this afternoon?!!!






    Fronts along the coast.

    Southwest flow with the FL around or just below 1500 meters.



    Upper level trough with unsettled weather for Monday.


    AVALANCHE ACTIVITY:

   No new known avalanche activity to report in the corridor.

    Avalanche on Black Tusk a couple of days ago. Look at MIN report below.            Keith Lenning Pic



    INFORMATION & OBSERVATIONS:
    Snow making in the valley in full swing mode.

            Variable conditions but areas with some soft snow.

    Avalanche course on top of Whistler.

    Clouds were moving in, weak front approaching.

    Friday afternoon.

   Big picture Friday, finally a change with the approaching front!!

From Avalanche Canada MIN Reports:

Black Tusk Slide : Dec 6, 2018

Musical Bumps Surface Hoar: Dec 6, 2018

Flute Bowl: Dec 7, 2018


From South Coast Touring:

Alex Wigley:
I was out recording observations and early season conditions while updating a terrain atlas for the ExCan guides. But I felt that guides shouldn’t be the only network that these get shared with.
I ventured out onto the Spearman (Spearhead) Glacier on Tuesday and found an HS 225cm at the top of the glacier and 175cm on the lower bench. There were a lot crevasses, and are notably becoming more organized, and linking together.
On Thursday, I was out again, and checked the Decker Glacier. Decker is incredibly broken this year, with more crevasses showing than I’ve see in a winter season. The ice wall at the bottom is larger, as much of it fell into the lake this summer, however it is directly on the ski slope. Backcountry users should take note that the result of an avalanche, missing a turn, a fall, or even getting off track in a whiteout would be a catastrophic mistake.
Hope everyone gets something out of these pictures and can use them throughout the winter. I would highly recommend anyone who isn’t familiar with glacier travel and crevasse rescue to jump on an Extremely Canadian crevasse rescue course. Also for everyone else, to practice their skills and ski with a rope this year. This is the year to have a rope that lives in your pack!
Have a safe winter everyone.

    Areil view from Tuesday Dec 4, 2018.

ARTICLES:

Whistler Blackcomb Avalanche Advisory: Dec 8, 2018

Week in Review for Utah:Nov 30-Dec 6, 2018

Why an avalanche hit Vail Resorts' stock yesterday: Motley Fool

Talk to the experts with Ian Stewart Patterson: Snow Safety

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