22 Dec 2020

December 22, 2020

     YESTERDAY:

      Man Made or Natural? I'll take both with these temperatures.!!!

      Snowing with no wind, means nice turns to be had.

      Freshies!

      Awesome turns to be had in 7Th Heaven.

      Nice skiing right to the valley.


      Monday Dec 21, 2020. 14:00 Hrs -8 with a 5-15 KPH West wind. 0 Deg C in the valley.

      Satellite image from same timeframe.

     Big picture Monday afternoon. 


Weather Observations for December 22, 2020 taken at 06:00 Hours.

2240 meters      -13, Winds were 45-65 KPH NNW--Horstman Hut
2180 meters      -12, Winds were 25-40 KPH N--Whistler Peak
1860 meters      -10, Winds were 30-45 KPH N --Rendezvous 
1835 meters      -11, Winds were   5-10 KPH N--Round House
1650 meters      -11, 4 cm in 12 Hrs, 19 cm in 24 Hrs, Base 155 cm --Pig Alley
1560 meters        -7, 2 cm in 12 Hrs, 12 cm in 24 Hrs,   Base 96 cm--Catskinner
  660 meters        -6, Valley Temp, Max temp Yesterday was 0, 4.9 mm of precip yesterday.


-13 with a 50 KPH wind brings the wind chill to -26 Deg C. Dress warm if going into the alpine.
-10 with a 40 KPH wind brings the wind chill to -21 Deg C.

Be wary with reverse loading today. 

Thank You very much for those who read the blog and hit the donate button. Spending about three hours a day on it lately. Please forward the link to your friends. It's been difficult guesstimating these days but happy with my predictions.

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

FORECAST: 

Ridge of high pressure will bring mostly sunny skies or today in a North West flow aloft. The freezing level will remain below surface. The ridge will bring dry weather to the region into Thursday. Wednesday will be mostly cloudy with some sunny breaks and the FL may move up to 1000 meters with some warm air associated with the high. Thursday will be similar with the FL rising to around 1300 meters. For Christmas Day we can expect light precipitation with the FL hovering in the 1000 meter range. Guesstimates:  No precipitation until Friday. 4-8 cm by Saturday am. 


      GOES IR image from this am.

      Ridge builds for today with cooler temperatures. 





          Ridge holds but cloud will drift in from the low to the North West.
 





       Mostly cloudy for Thursday with the Low pushing closer to our zone. May get some sun!



      AVALANCHE ACTIVITY:

      Only minor injuries after avalanche at Bijoux Falls, B.C. Article below. Avalanche Canada Pic

      Some Sz 1 Sc and Na observed on Monday on Whistler. Reverse loading with North East winds.


     On Blackcomb some Sz 1 Na on steep terrain.


From the Sea to Sky Advisory:

Around 20 cm of snow fell on Monday with strong northerly wind. Wind slabs may linger at treeline and alpine elevations on all aspects due to wind starting from the south and shifting to the north. In sheltered terrain, numerous storm snow interfaces may be found in the top 50 cm of the snowpack, which may take a couple of days to bond.

Two concerning weak layers are present in the snowpack. The shallower layer, being around 50 to 80 cm deep, includes feathery surface hoar crystals. There is uncertainty in the distribution of this layer, but the most likely place to find it would be in terrain features sheltered from the wind around treeline and lower alpine elevations. The more widespread weak layer includes sugary faceted grains that overlies a hard melt-freeze crust. This layer is generally found around 50 to 100 cm deep and is widespread up to around 2000 to 2200 m. 

     

      INFORMATION & OBSERVATIONS:

      Cold enough to make some high quality man made.

      Snowing 2 cm an hour for a while in the am.

      Cornices are layering up, growing Daily.

     Just Showcase T-Bar to go!!!

      Nice to see some snow to the valley!!!

      On Monday 4.9 mm of precipitation was recorded at 660 meters.

      Should be some awesome sledding in the next few days.


LOCAL AVALANCHE CANADA MIN REPORTS:

Mount Mulligan-South Coast: Dec 21, 2020

Touchy snow on Needle Peak-South Coast Inland: Dec 21, 2020

More than dust on Crust out there-South Coast: Dec 21, 2020

Lesser Flute: Dec 21, 2020


VIDEOS:

Powder Picker Dec 21, 2020: David Jones

What there dealing with in: Montana


ARTICLES:

Mountain Conditions Report Dec 17-20, 2020: Marriot Basin

Avalanche Canada to rely more on recreational skiers for avalanche forecasting: MIN

Four Fatalities recorded in Single Weekend, amid "Especially Dangerous" avalanche conditions: Colorado

Backcountry Avy Danger high as more storms take aim: Colorado

Only minor injuries after 3 sledders get caught in avalanche at Bijoux Falls, Northern B.C.: Dec 18, 2020

Avalanche Fatalities in Europe 2020/21: EAWS

Two Ski Tourers injured by an avalanche: France

Two Hikers rescued after avalanche in : Italy

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