22 Dec 2018

December 22, 2018

    YESTERDAY:

    Nice breaks early Friday morning.

    Some great light in the morning.

    Ipsoot mountain, a favourite destination of Whistler Heli-Skiing.

    Rainbow Mountain Friday. Awesome morning.


    There were lots of clouds around for most of the day.

    Some alpin glow before lights out.


    Friday evening, -4 deg C in the valley.


    Friday afternoon.

    Big picture, moisture heading our way.


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

2240 meters       -9, Winds were 30-40 KPH SE--Horstman Hut
2180 meters       -8, Winds were 40-50 KPH SE--Whistler Peak
1860 meters       -8, Winds were 15-20 KPH SE--Rendevous
1835 meters       -8, Winds were 20-25 KPH ESE--Round House
1650 meters       -8, 1 cm of new, 2 cm in 24 hrs, Base 214 cm--Pig Alley
1565 meters       -8, 1 cm of new, 2 cm in 24 hrs, Base 150 cm--Catskinner
  660 meters       -4, Valley Temp, Max temp Yesterday was +0.8, 0.0 mm of precip recorded yest

    As of 07:00 hrs we have overcast skies, unlimited visibility and it is snowing lightly.


FORECAST:

A weak impulse of moisture this morning as a frontal band pushes through with a Westerly/Southwesterly flow aloft.  Stronger frontal band for this evening with strong winds and light/moderate precipitation. The FL should hover just below the surface this am and rise to around 1000 meters with the passage of the warm front. Sunday will see clouds and periods of light snow as the front passes through our zone. An upper ridge will influence the area as early as Monday morning with mostly sunny skies by the afternoon in a Northwesterly flow.. Tuesday is looking like a nice sunny day with another weak frontal band developing Christmas night into Wednesday. Ridge will likely rebuild for Thursday. Cool temps, some snow and sun for the holiday week. Guesstimates: 10-15 cm by Sunday morning, 2-5 cm by Monday morning.



    GOES IR image from this am, weak impulse this an, stronger later in the afternoon.


     Low will send a strong frontal band with stong winds later today.











    Upper trough for Sunday with light snow, FL just above surface.






    Cooler temps with the High pressure to the North.


    Christmas Day will be cold and sunny.



    AVALANCHE ACTIVITY:


    Avalanche control Friday morning produced Sz 1-2 Xe, Sc, & Xh. And some holes.


    Shot on Road Runner. Some Na (Natural) activity noted during the last storm from Heli.

    Sz 2.5 on Phalanx Ridge above Blackcomb Glacier. Xh.                                      Joe Hertz Image


    Fracture line profile of the above avalanche.

    Explosive remote (Xr) from a shot on Husume Flank. 15 Kg. Slid on Spearhead side. G Reid Pic

    INFORMATION & OBSERVATIONS:


    Trees at 1000 Meters were plastered with snow.


   Snow cats going to bed!!

    Avalanche course.


    Santa Clause in the town centre Friday afternoon.


    A few flurries in the morning.


    Next weak frontal band that arrived last night.

ARTICLES:

'Off Piste' movie chronicles avalanche deaths of two Olympic Hopefuls: CNN

The December 20 windstorm and the start of Winter: Cliff Mass Weather Blog

Avalanche Awareness Tours on Blackcomb: Daily 12:30 Hrs

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