12 Dec 2018

December 12, 2018


    YESTERDAY:

    Tuesday morning.

    Overcast and snowing pretty much all day.

    Blowing and snowing. Crystal zone opened yesterday.

    A few breaks at around 16:00 hrs.

    Sweep time! Sunset was 16:10 Hrs yesterday.




Weather Observations for December 12, 2018  taken at 06:00 Hours.

2240 meters     -10, Winds were 35-45 KPH NNE--Horstman Hut
2180 meters     -10, Winds were 50-65 KPH W--Whistler Peak
1860 meters       -8, Winds were 15-25 KPH S--Rendevous
1835 meters       -7, Winds were 30-40 KPH SW--Round House
1650 meters       -6, 8 cm of new, 34 cm in 24 hrs, Base 117 cm--Pig Alley
1565 meters       -6, 6 cm of new, 31 cm in 24 hrs, Base 69 cm--Catskinner
  660 meters       -1, Valley Temp, Max temp Yesterday was +1.1, 21.5 mm of precip recorded yest

    As of 08:00 hrs this am we have broken cloud and unlimited visibility.


FORECAST:

A very weak ridge over the area this am before another Pacific Front brings snow and high winds to our area in a Westerly flow aloft. The FL will hover in the 1000 meter zone and the front will continue into Thursday. FL is expected to spike on Thursday up to 1500 meters.  Another front is expected on Friday easing off for Saturday before another front arrives for Sunday. This patteren will continue into next week with a ridge beginning to build on Thursday into Friday, but thats a ways off so standby. Guesstimates: 25-35 cm by Thursday morning, 30-40 cm by Friday morning, 20-30 cm by Saturday morning.



    GOES IR image from this am.


    Westerly flow today with strong winds and moderate/heavy precip by this afternoon.









    Fronts along the coast.


    Precipitation, strong winds and a rising FL for Thursday.








    That is a large low to the North on Friday. Cooler temps.

    Cold air making its way back to the coast for Saturday.. 


    AVALANCHE ACTIVITY:


    Two hikers rescued from an avalanche near Sorenburg. Article below.                               Net Pic


   Na (Natural Avalanche) on a rock slab.


   Not much to report locally, limited terrain observed.

    INFORMATION & OBSERVATIONS:


    Cornice and soft slabs developing below treeline.


   Storm day, 26 cm recorded at PA, 21 cm at Catskinner by 14:00 hrs.


    Still many early season hazards.


    Snow right to the valley.


From Avalanche Canada MIN Reports:

Steep CreekDec 10, 2018


ARTICLES:

Spanish hikers rescued after avalanche: Switzerland

Rime Ice or Hoar Frost--There is a difference: WeatherOps

Avalanche information from France: Pisthors.com

Its time to adopt an insurance-based model for backcountry skiing: Pique

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