10 Apr 2017

April 10, 2017


    5 Dead after falling off cornice on Mt Harvey, story in article section.                             Net Pic

    An avalanche in Austria has killed a ski tourer, story below.                                              Net Pic

    Sloughs on Stupid Traverse Sunday morning.

    Xl Sz 1 from Saturday.

    Old fracture line from Xl (avalauncher) Lakeside, Saturday am.

Locally, there have been several Nc (natural cornice drops) resulting in Sz 2-3 avalanches. Cornices are very ripe and should be avoided. There were several Sa (skier accidental) over the weekend ouside the ski area boundry. Cornice control in the ski area has resulted in large debris piles in most of the alpine bowls.


    Decker Mtn. Sunday April 9, 2017.

   Unsettled weather for most of the day, some nice sun near days end.

    The latest 7Th Heaven jump site.

    Nice conditions on Blackcomb Glacier.

    West Cirque, winter conditions.

    Sunday morning

    First Nations Gathering on Whistler Sunday.

    Fissile Mountain.

    Black Tusk

Weather Observations for April 10, 2017 taken at 06:00 Hours.

2240 meters      -7, Winds were 20-40 KPH SE--Horstman Hut 
2180 meters      -7, Winds were 30-40 KPH SE--Whistler Peak
1860 meters      -5, Winds were   5-15 KPH SE--Rendevous
1835 meters      -4, Winds were 15-25 KPH SE--Roundhouse
1650 meters      -4, 2 cm of new snow, 2 cm in 24 hrs, 355 cm Base, RH 92%  --Pig Alley
1550 meters      -4, 1 cm of new snow, 1 cm in 24 hrs, 259 cm Base, RH 95%  --Catskinner 
  660 meters       0, Valley Temp, Max Temp Yesterday was +8.9, 0.0 mm of Precip recorded yest

   As of 07:00 hrs this am over Blackcomb bowl we have broken cloud and unlimited visibility.


An occluded front will pass through the area tody with mostly overcast skies in a Southwest flow aloft. We can expect intermittent light prercipitaion with the FL maxing out in the 1200 meter range, dropping back to just above the surface tonight. A very weak ridge will bring unsettled weather to the area Tuesday before a front from the South pushes through the area on Wednesday, with light/moderate precipitaion and a 1300 meter Fl. An upper low will continue to give us cloudy skies and light precipitaion Thursday into Friday.
Guesstimates: 2-6 cm by Tuesday morning, 0 cm for Wednesday morning, 10-15 cm for Thursday morning, 5-10 cm for Friday morning.

    GOES IR image this am.

                Weak frontal band for today with light snow in the alpine.

              Monday will be overcast.

                   Unsettled Tuesday.

              Another front for Wednesday.


      Avalanche from Saturday.  Taken Suday.                                                            Chuck Ratzlaff Pic              

      Avalanche involvement on Don't Swill Saturday, pic taken on Sunday.              Chuck Ratzlaff Pic

    An outdoor professional was caught and injured in large sz 2 on the right side of spearhead GL. We swept and cleared        a sz2 out of don't swill....Happened on Saturday. These photos were taken on Sunday.

     Sperahead Glacier Saturday April 8, 2017. Picture taken on Sunday April 9, 2017. Chuck Image

    Rimed iceicles on Horstman Hut.

    Lots of cornice debris in the bowls.

    Avalanche & Cornice debris in Blackcomb Bowl.

    That is a fragile looking corncie nose.

   Back Flips on the windlip, Blackcomb Glacier.

    Matt Richard

    Sylvain Sudan above Blackcomb Bowl.


Five hikers have been killed in a cornice collapse/avalanche above Lions Bay: Mount Harvey

Two missing after an avalanche on Vilyuchinsky Volcano in Kamchatka: Russia

A ski tourer is dead after an avalanche in Styria: Austria

Top five weather forecasts acoording to: Mountain Sledder

Five things to know about avalanches: Parks Canada

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