27 Jan 2021

January 27, 2021

     YESTERDAY:

      Sunrise Tuesday, 07:54 Hrs. -11 with a 5-20 KPH NNE wind.

     First lift up.

      Interesting light in the am.

      Morning flurries.


     Steep North facing slopes were loading up.

     Noon flurries.

      Tuesday Jan 26, 2021. 14:30 Hrs. -10 with a 5-15 KPH East wind. -2 in the valley.

     Tuesday afternoon at around dusk.

     Soft light in the afternoon.

      Looking to the North in the afternoon.

      Last run of the day.


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

2240 meters      -11, Winds were 15-25 KPH SE--Horstman Hut
2180 meters      -11, Winds were 30-40 KPH SE--Whistler Peak
1860 meters      -11, Winds were     0-5 KPH SE --Rendezvous 
1835 meters      -12, Winds were   5-10 KPH ESE--Round House
1650 meters      -10, 4 cm in 12 Hrs, 4 cm in 24 Hrs, Base 222 cm --Pig Alley
1570 meters      -10, 2 cm in 12 Hrs, 2 cm in 24 Hrs, Base 154 cm--Catskinner
  660 meters        -4, Valley Temp, Max temp Yesterday was -1.2, 0.0 mm of precip yesterday.

Dress warm, it's cold up there! -20 with wind chill at 2180 meters.

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



FORECAST: 

An upper level trough will bring overcast skies and periods of light precip in a South Westerly flow aloft. The FL will remain below surface on Wednesday. May see a few breaks? Weakening upper trough will bring unsettled weather for Thursday with flurries in the morning and a mix of sun and cloud by the afternoon. Cloudy but dry Friday morning into early Saturday am, with the next frontal band arriving Saturday morning with light precip. A more active front arrives for Sunday with moderate to heavy snow. Guesstimates: 2-5 cm by Thursday am, trace-2 cm by Friday am, trace-2 cm by Saturday am, 8-12 cm by Sunday am.  


      GOES IR image from this am.

      Upper trough will bring periods of light precip with cool temps.





        Weakening upper trough will bring flurries and unsettled weather for Thursday.





      Upper trough will bring mostly cloudy skies for Friday, relatively dry.



     AVALANCHE ACTIVITY:

      Four ski tourers have been buried in an avalanche in Italy. Article below.                            Net Pic


      A ski tourer has died in an avalanche in Isere, France. Article below.                          Net Pic

      A ski tourer has died in an avalanche on Croix de Cassini, France. Article below.                Net Pic

      Loose dry activity on Tuesday.

      Dry loose on solar aspects 

      Sz 1 Sc around noon. Stupid West.

      Crown line on Stupid West.

      Avalanche mitigation on Whistler produced some Sz 1 Sc Xe low density soft slabs. 


From Sea to Sky Avalanche Advisory:

Avalanche Summary

On Tuesday there were a few reports of natural and human-triggered size 1 dry loose avalanches, as well as a few size 1 explosives triggered wind slab avalanches in the alpine.

On Monday there were a few reports of size 1 human triggered dry loose avalanches on northeast aspects in the alpine.

On Sunday there were a few size 1 dry loose avalanches reported, as well as one size 2 explosives triggered cornice avalanche.

Snowpack Summary

10-25 cm of recent fresh snow sits on firm wind affected snow at upper elevations, on surface hoar in sheltered areas, on a melt-freeze crust below 1900 m, and on a sun crust on south-facing slopes. Recent winds have redistributed much of this new snow, creating wind slabs in leeward terrain, and stripping the new snow off of many windward slopes.

A crust from early December may be found around 200 cm deep in the snowpack. In shallow rocky areas, recent test results suggest that it may still be possible to trigger this layer. In deeper snowpack areas it has shown no recent results and appears to be unreactive in these areas.



      INFORMATION & OBSERVATIONS:

      Aussie day.

     There was some great snow to be had.

      Flurries, sun and pow.

     Where the snow blew in it was nice!!!


      Power Flurry in the afternoon.

      New snow.

     Solo!?



LOCAL AVALANCHE CANADA MIN REPORTS:

Banana Chute: Jan 25, 2021

Cham 1-3, Vista Chute, DOA: Jan 25, 2021

Round Mountain: Jan 26, 2021


VIDEOS:

Avalanches on Sheep Mountain: Montana

Powder Picker Jan 26, 2021: David Jones


ARTICLES:

Four ski tourers swept away by an avalanche in Abruzzo: Italy

Two more avalanche deaths in : France

More info on a backcountry skier killed in an avalanche in Isere: France

Snowboarder rescued after being partially buried in an avalanche: North Shore Mountains

133 avalanches in ten days: Iceland

TRU professor aims to mitigate sledder deaths in avalanche terrain: Thompson Rivers University

Coronavirus impact on skiing and snowboarding: PlanetSki


      Marker Goggles for best avalanche picture Jan 19- Jan 31, 2021 in Sea to Sky Area.

      Sponsored by Volkl Canada   

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