16 Dec 2020

December 16, 2020


      Mid mountain early Tuesday am.

      Nice layer of new dry snow.

      Periods of light snow.

     Tuesday December 15, 2020. 14:00 Hrs -3 with a 20-55 KPH Se wind. +2 in the valley.

      Satellite image from the same time frame.

      Wet flurries in the valley just after noon. FL on the rise.

      There were some great turns to be had.

Weather Observations for December 16, 2020 taken at 06:00 Hours.

2240 meters      -7, Winds were 45-65 KPH SE--Horstman Hut
2180 meters      -6, Winds were 50-65 KPH ESE--Whistler Peak
1860 meters      -4, Winds were 20-30 KPH SSW --Rendezvous 
1835 meters      -4, Winds were 20-40 KPH SE--Round House
1650 meters      -2, trace in 12 Hrs, 5 cm in 24 Hrs, Base 108 cm --Pig Alley
1560 meters      -2, 1 cm in 12 Hrs, 6 cm in 24 Hrs, Base   70 cm--Catskinner
  660 meters     +3, Valley Temp, Max temp Yesterday was +2.8, 4.9 mm of precip yesterday.

     As of 07:00 Hrs this am we have overcast skies, unlimited visibility, and snowing lightly.


Another weak front arrives this morning with steady light precipitation in a Westerly flow aloft. The freezing level will hover in the 1000-1200 meter range. Another wave arrives tonight. Precip will ease to showers by Thursday am with a drying trend, a weak ridge with a chance of some breaks, but likely cloudy into Thursday night. Another cold front arrives Thursday night with light precipitation into Friday night, yet another more active warm front arrives Saturday with light to moderate precip into Sunday. Guesstimates: 12-18 cm by Thursday am, 2-4 cm by Friday am, 15-20 cm by Saturday am, 30-40 cm by Sunday am. 

     GOES IR image from this am.

      Upper trough for today with light precip, on the warm side.

      Weak broad trough with a drying trend Thursday.

      Front pushes through on Friday. 


      An avalanche has killed a ski tourer on Albano North Face in Austria. Article below.     Net Pic

      An avalanche has killed a ski tourer at Val Bedretto, Switzerland. Article below.          Net Pic

    Skier involvement, Coquihalla Summit, North Face Couloir. MIN Report below. B. Morden Pic

      Avalanche mitigation produced Sz 1 with Xl, Xe, Xc, & Sc on Whistler. Harmony opened briefly.

      Alpine on Blackcomb remained closed. Some Sz 1 Sc.

     There was a bit of new snow instability below tree line..


      There were some great power flurries in the am.

     At 14:00 Hrs we had 5 cm of new snow, Base 72 cm at 1570 meters.

      A few breaks pushed through in the afternoon.

      Winds got up to 60 KPH at 1835 meters

      Alpine on Blackcomb was closed for uphill traffic on Tuesday 

      Signs signs everywhere there's signs. These are very important ones to know!!!

       Many obstacles on the lower mountain with the warm temperatures we have been experiencing.

     +2 with light rain at 660 meters on Tuesday afternoon.


North West Couloir: Dec 14, 2020

Brohm: Dec 15, 2020

Round Mtn: Dec 15, 2020

Metal Dome Trees: Dec 15, 2020

Blackcomb Wind Slab: Dec 15,, 2020

Apostles: Dec 15, 2020


Powder Picker Dec 15, 2020: David Jones

Avalanche Transceivers 101: Backcountry Skiing Canada


One death in an avalanche accident: Austria

An avalanche has killed a ski tourer on Val Bedretto: Switzerland

Backcountry snowboarder triggered, caught in avalanche north of Crested Butte: Colorado

Skier caught and carried in avalanche near Marble: Colorado

Innovative tech reduces avalanche risk on Highway 37A: B.C. Gov News

Crazy Remote Triggering: CBAC

Avalanche destroys refuge: Italy

Avalanche injures three ski tourers: France

Soldiers caught in an avalanche in the Hautes-Alpes: France

Skier caught in an an avalanche and rescued: Italy

Injured ski tourer caught in an avalanche: Switzerland

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