5 Dec 2020

December 5, 2020

     YESTERDAY:

      Early Friday morning, sunrise 07:54 Hrs. -4 with a 20-25 KPH SE wind.

     Mount Currie Friday am.

      Fissile Friday afternoon.

      Friday December 4, 2020. 15:00 Hrs. +5 with a 10-20 KPH ESE wind. +3 in the valley.

     Satellite image from same timeframe as above. 


Weather Observations for December 5, 2020 taken at 06:00 Hours.

2240 meters      +3, Winds were 40-70 KPH N--Horstman Hut
2180 meters      +2, Winds were 45-60 KPH SE--Whistler Peak
1860 meters      +3, Winds were   5-15 KPH S --Rendezvous 
1835 meters      +5, Winds were 15-25 KPH SE--Round House
1650 meters      +4, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 88 cm --Pig Alley
1560 meters      +3, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 50 cm--Catskinner
  660 meters       -1, Valley Temp, Max temp Yesterday was +7.0, 0.0 mm of precip yesterday.


      As of 07:30 Hrs this am we have scattered cloud and unlimited visibility.


FORECAST:

Upper ridge for today, high scattered cloud in the upper elevations with valley cloud in a South Westerly flow aloft. Should see sunnier skies by the afternoon. Still an inversion in the alpine.  Ridge breaks down Sunday with a weak front pushing in with periods of light precip with the FL slowly dropping to around 1500 meters. A more active front will arrive on Monday with moderate to heavy precip and the FL hovering in the 1500 meter range, might drop to 1300 m. Guesstimates: no precip today, 5-10 cm by Monday am above 1000 m, 20-40 cm by Tuesday am above 1000 m.


      GOES IR image from this am.

       Upper ridge still in control, low will send some cloud into the mix for the am. Sunny in the pm.





      Low begins to send more cloud our way for Sunday.





      Trough for Monday with potential for moderate to heavy precipitation.

     Potential for some decent precip on Monday.

      AVALANCHE ACTIVITY:

     Old wet loose on backside of Mount Currie.


     More recent wet loose Lakeside.

      Snowballing continues.

From Sea to Sky Advisory:

No new avalanches were reported on Thursday.

On Wednesday, a natural widespread wet loose avalanche cycle up to size 1 occurred. A cornice failure size 1.5 also occurred triggering a small surface slab on the slope below.

      Chetwynd snow glide.                                                                                      Ryan Bougie Image


      INFORMATION & OBSERVATIONS:

     Mount Fee

     Wind and sun affect on Phalanx.

      Sun Glaze.

      Medevac landing at the clinic.


      Pretty dry in the valley.


LOCAL AVALANCHE MIN REPORTS:

Surface Hoar, Duffy: Dec 3, 2020

Crusty but Sunny, North Van: Dec 4, 2020


VIDEOS:

Finding the safest route in avalanche terrain on a sled: Ski Doo/ BCAA

Powder Picker Dec 4, 2020: David Jones


ARTICLES:

Be prepared for avalanche conditions on the North Shore Mountains: CTV News

Local organizations present opportunities as Avy classes fill up: Wyoming

With virus limits at ski resorts, backcountry risks beacon: Montana 

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