1 Dec 2017

December 1, 2017


    AVALANCHE ACTIVITY:

    Not much to report locally, reports of Sz 1 with ski cuts above 17-11-26 crust.

   Slab avalanche in the North Shore Mountains yesterday, information below. Reza Marvastis Image




YESTERDAY:


    Snow line was at around 800 meters Thursday morning.


    Awesome to see the trees White.

    There were a few morning breaks.

    Thick valley cloud in the afternoon.

Weather Observations for December 1, 2017 taken at 06:00 Hours.

2180 meters    -6, Winds were 35-65 KPH S   --Whistler Peak
1835 meters    -4, Winds were 15-45 KPH SE --Roundhouse
1660 meters    -3, 9 cm of new, 9 cm in 24 hrs  Base 149 cm --Pig Alley
  660 meters     0, Valley Temp, Max Temp Yesterday was +3.1, 2.6 mm of precip recorded


FORECAST:

The large upper low will send a couple of weak frontal bands our way in a Westerly flow aloft. A cool frontal band will push through today with the FL descending to surface. We will likely see an impulse of precipitation tonight with moderate snowfall forecasted. The low begins to move Eastward on Saturday with overcast conditions but little in the way of precipitation and the FL hovering just above surface. By Sunday a strong high pressure aloft begins to build with sunny skies expected with cool temperatures. (FL below surface) Nice weather for most of the week with mostly sunny skies but  some cloud development on most days. By Tuesday we can expect high freezing levels with inverted temperatures. Guesstimates: 10-15 cm by Saturday morning, Trace-2 by Sunday morning.


    GOES IR image from this am.





    Low off the coast will continue to send weak frontal bands our way.


    High pressure begins to push the low East on Saturday.






INFORMATION & OBSERVATIONS:


    Looking like winter again.



    Thursday Afternoon.

    Big picture Thursday.

    Catskinner Weather Plot. 1 cm recorded on Thursday afternoon with a base of 98cm. -1.5 Deg C.



James Tilley
November 30 at 4:58pm
Touring around Blackcomb Gl yesterday. High winds had shifted most of the fresh snow and left behind exposed rain crust. Surprisingly the more Southerly aspects around Poop Chutes held some better snow.


Reza Marvasti added a photo and a video.November 30
To backcountry friends, North Shore mountains avalanche hazard is quite HIGH despite the report saying moderate to considerable.Crowns about 50cm, fracture line up too 150m, and all aspect.We even triggered some from a different slope.


Cypress Mountain recieved 25 cm in 24 Hours on Nov 30. 

VIDEO FRIDAY:

Speed Flyer ski cutting: Chamonix

Wing Suit pilots land in Plane: Red Bull

Dropping Corbet's Couloir on Bikes: Jackson Hole

ARTICLES:

Upgrade your Avalanche Safety-Cash for Old Beacons: ORTOVOX

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