2 Dec 2020

December 2, 2020

     YESTERDAY:

      Early Tuesday am.  

      Fantastic light in the am.

      Pyroclastic and Mt Calley in the background.

     Great day for a walk.

     Tuesday December 1, 2020. 14:00 Hrs. -3 with a 5-10 KPH SW Breeze. +1 in the valley. 

     Image from same timeframe as above.

    North Coast is getting the goods.



Weather Observations for December 2, 2020 taken at 06:00 Hours.

2240 meters      +6, Winds were 40-55 KPH S--Horstman Hut
2180 meters      +2, Winds were 50-60 KPH SE--Whistler Peak
1860 meters      +7, Winds were   5-10 KPH SE --Rendezvous 
1835 meters      +7, Winds were   5-15 KPH E--Round House
1650 meters       -1, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 96 cm --Pig Alley
1560 meters      +2, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 55 cm--Catskinner
  660 meters       -1, Valley Temp, Max temp Yesterday was +2.3, 0.0 mm of precip yesterday.


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


FORECAST:

Upper level ridge will bring sunny skies to the area today in a warm Southerly flow aloft. A weak front moves down the coast but should only bring some cloud to the area on Thursday. Unlikely but possible to see a snow flurry in the alpine. Ridge deflects the low to the North bringing a mix of sun and cloud for Friday. We may see some precipitation on Sunday according to the European Model.  NAM & GFS are calling for precip by Monday. Guesstimates: 0-trace by Thursday night. 


      GOES IR image from this am.

      Very warm air aloft with sunny skies for Wednesday.






      Fronts along the coast.

      Low moving down the coast on Thursday. Cloudy day.





      High pushes back on Friday, unsettled weather.




     AVALANCHE ACTIVITY:

      Some activity from yesterday.

      Shale slope tuesday am.

      Size 1-2 Debris.

      Below the bomb tram, Peak Chair on Whistler.

On Tuesday afternoon numerous size 1-1.5 wet loose avalanches from steep south aspects were reported. A large natural avalanche size 2-2.5 from a north-facing alpine slope was also reported and likely occurred Monday night.

On Monday explosive triggered storm and wind slab avalanches were reported up to size 2.5. Crown depths generally ranged 20-50 cm, with a 120 cm deep crown observed in a heavily wind loaded feature.

Our eyes and ears in the mountains are limited at this time of year and may continue this winter due to fewer professional observations. If you see anything (or don't) while out in the field, please consider sharing via the Mountain Information Network (MIN)



     INFORMATION & OBSERVATIONS:

      Observations from Al Collis, sledding in Powder Mtn Area on Tuesday. Activity from Tuesday.

      Cracking in the wind affected zones on Tuesday.

      NE Asp 2200 m looks like wind skin that popped in last 24-36 Hours.                        Al Collis Pic


      NE side of Powder Mtn Approx 2000 m Sz 1.5 in HST.   Tuesday.                              Al Collis Pic

     1850 Meters South aspect Powder Tuesday afternoon. Wet Loose.                               Al Collis Pic

      High on glaciers the wind has carved sastrugi, not pencil but sled rides in it not on it.
      NE aspects are the deepest, NW aspects are still bony. Thanks for this awesome sled report Al!


      Valley cloud Tuesday morning.

      Busy day in the backcountry.

      Recent fracture line in the Tantalus Range as well.

      Mount Garibaldi Tuesday afternoon.


LOCAL MIN REPORTS:

Blackcomb Chutes: Nov 28, 2020

Tantalus Area: Nov 28, 2020

Hanging Lake: Nov 28, 2020

Shovel Nose Creek: Nov 30, 2020

Round Mtn: Nov 30, 2020

Decker: Dec 1, 2020


VIDEOS:

Powder Picker, Dec 1, 2020: David Jones


ARTICLES:

It is time for everyone to put their avalanche thinking caps on: Avalanche Canada

Sometimes it's simple: AC Forecasters Blog

Snowpit Search Page: SnowPilot

Avalanche Alliance & Elevated Riders build beacon check stations: SnoWest

California Governor warns of 'Stay at home orders' that closed Ski Resorts in the spring: SnowBrains


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