27 Feb 2021

February 27, 2021

      YESTERDAY:

      Sunrise Friday was at 07:01 Hrs. -10 with a 10-20 KPH SW wind.

      Cloudburst Mountain early Friday am.


       Looking North East Friday morning.                                                                        Greg Dixon Pic

      Ziggy's Meadow.                                                                                                              GD Pic


      Nice snow in the Blowhole.                                                                                                  GD Pic

      Always nice skiing in the sun.                                                                                             GD Pic



.       Friday Feb 26, 2021. 14:00 Hrs. -6 with a 15-25 KPH SW wind. +4 in the valley.

     Cloud moved over Blackcomb in the afternoon.

      Whistler at around 17:00 Hrs Friday.

     Clearing off by 17:00 Hrs on Blackcomb.



Weather Observations for February 27, 2021 taken at 06:00 Hours.

2240 meters    -14, Winds were 10-15 KPH NNW--Horstman Hut
2180 meters    -12, Winds were 10-15 KPH NNW--Whistler Peak
1860 meters    -12, Winds were   5-15 KPH ENE --Rendezvous 
1835 meters    -11, Winds were   5-10 KPH SW--Round House
1650 meters    -12,  0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 254 cm --Pig Alley
1570 meters      -9,  0 cm in 12 Hrs, trace in 24 Hrs, Base 184 cm--Catskinner
  660 meters      -8, Valley Temp, Max temp Yesterday was +5.2, trace of precip yesterday.


      As of 07:00 Hrs this am we have clear skies and unlimited visibility.



FORECAST:

 Upper ridging will bring sunny skies this am, clouds will move in later this am, transitioning to mostly cloudy skies by the afternoon. Overcast for most of the day with a weak frontal band arriving this evening with periods of light snow into early Sunday am. The FL will likely stay below surface. Sunday will, be overcast with a weak warm front pushing through in the evening. Periods of light snow will continue into Monday. An impulse of snow will push through Monday with a brief drying trend later in the afternoon. Tuesday see another weak frontal band bring more light snowfall. Thursday and Friday could bring 25-30 cm. More on that as we get closer. Guesstimates: trace-3 cm by Sunday am, 8-12 cm by Monday am, 4-8 cm by Tuesday am, 4-8 cm by Wednesday am.


      GOES IR image from this am.


      Mostly cloudy for Saturday, weak warm front pushes in this evening.





      Northerly Flow aloft. Moderate winds in the alpine.

       Warm front pushes through Sunday with light snow and the FL rising to around 1000 meters.





       Weak frontal band for Monday with periods of light snow, FL could reach 1200 meters.



      AVALANCHE ACTIVITY:

     Recent Na slab above Rumbling Glacier in the Tantalus Range <click for info!!

      Close up of above Na slab avalanche.

      Point releases, loose dry on East aspect Emerald Bowl Friday am..


     Avalanche control on Whistler produced some Sz 1-2 cornice results. Xc. Some Sz 1 winds slabs Xe

     Avalanche mitigation on Blackcomb yesterday--Not much to tell. Some results up to Sz 2 Xh Xe.

From Sea to Sky avalanche advisory:

Avalanche Summary

On Thursday a couple of size 2 natural wind slab avalanches were noticed near Whistler in steep, northwesterly alpine terrain. A couple of human-triggered avalanches were also observed, one on north-facing terrain in the alpine and one on east-facing terrain below treeline. All these avalanches appear to have involved only the recent storm snow.

Snowpack Summary

Storm slabs formed by 20 cm of new snow and extreme east/southeast winds have formed touchy storm slabs that are expected to remain reactive to human triggers, especially in wind- and sun-affected terrain.

The new snow buried a variety of snow surfaces including wind pressed snow in the alpine, sun crusts on solar aspects, and a spotty layer surface hoar in some sheltered treeline areas.

Another weak layer buried in mid-February is composed of a crust, facets or spotty surface hoar depending on elevation/aspect, and is now down 50-80 cm. There have been no recent avalanches reported on this layer. Large triggers, such as an avalanche in motion, cornice fall, or intense loading from snow, wind and/or a rapid rise in temperature could awaken these deeper weak layers.

The mid and lower snowpack is well settled and strong in most areas.


      INFORMATION & OBSERVATIONS:

      Looking like a nice day from the Peak. -11 with a 15-30 KPH WNW wind. 07:00 Hrs.

     It was an awesome morning.                                                                                                  GD Pic

      Rimed towers and drive station.                                                                                          GD Pic


      BC Ski Team training on Gandy Dancer.                                                                              GD Pic


      Please follow the protocols.                                                                                                     GD Pic


      Larger convective cloud over Whistler Friday afternoon.


FROM SEA TO SKY MIN REPORTS:

Casper Creek Close Call: Feb 26, 2021

Marriott Basin: Feb 26, 2021


VIDEOS:

Powder Picker February 26, 2021: David Jones


ARTICLES:

Avalanche warning after another Canadian Backcountry Skier Dies: Gripped Magazine

How a rare February landslide/avalanche left more than 200 dead: Disaster in the Himalayas

Why is America seeing so many avalanche fatalities: A Winter to Forget

Mountain Conditions Report-Feb 26, 2021: Cayoosh Pass

Juneau officials warn of dangerous 'historic avalanches': Alaska

It's time to embrace Ski Guiding: Outside


        Submit your best avalanche photo for a pair of  Goggles Feb 1-28, 2021. Sea to Sky Area.

                                                    Thanks to Volkl Canada for sponsoring.

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