8 Dec 2020

December 8, 2020

    YESTERDAY:

        Sunrise Monday Dec 7, 2020. 07:57 Hrs. -1 with a 15-35 KPH South wind. 

     10:00 Hrs at 1835 meters. Still -1 Deg C.

      Snowing at 1000 meters Monday am.

      Nice to see the snow back in the trees.

     Monday December 7, 2020. 14:00 Hrs. -1 with a 15-30 KPH SE wind. +1 in the valley.

      Satellite mage from the same timeframe.


Weather Observations for December 8, 2020 taken at 06:00 Hours.

2240 meters      -2, Winds were 45-60 KPH NNE--Horstman Hut
2180 meters      -2, Winds were 45-60 KPH SE--Whistler Peak
1860 meters       0, Winds were 15-25 KPH SE --Rendezvous 
1835 meters     +1, Winds were 15-40 KPH SSW--Round House
1650 meters     +2, 5 cm in 12 Hrs, 18 cm in 24 Hrs, Base 99 cm --Pig Alley
1560 meters     +1, 3 cm in 12 Hrs, 13 cm in 24 Hrs, Base 62 cm--Catskinner
  660 meters       0, Valley Temp, Max temp Yesterday was +5.9, 33.7 mm of precip yesterday.


The FL spiked to 0 Deg C at 2240 meters at around midnight and dropped back down into negative territory at 03:00 Hrs. The temperature at 1860 meters remained above 0 Deg C all night maxing out at +1.7 at 02:00 Hrs this am. Similar situation on Whistler with just slightly cooler temps. At Catskinner weather plot we received 34.7 mm of precip since noon yesterday, at Pig Alley 47.6 mm.   

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


FORECAST:

A few more periods of light rain this am, with a drying trend later this morning in a South Westerly flow aloft. The FL will slowly drop back down to around 1200 m by tonight.  Overcast skies this afternoon into Wednesday morning with a weak upper ridge bringing a mix of sun and cloud by Wednesday afternoon. The FL should drop back down to the valley by Wednesday night. Thursday will be a gray dry overcast day before another weak front arrives Thursday night into Friday. Chance we may see some sunny breaks Thursday afternoon, more on that in tomorrow's post. The weekend looks like it may see some seasonable weather with an active frontal band arriving Saturday. Guesstimates: 1-3 cm above 1500 meters by Wednesday am, 0 cm by Thursday am, 1-2 cm by Friday am.



     GOES IR image from this am.


      Front moves East, drying trend by this afternoon, slightly cooler.






       Weak upper level ridge will bring sunny breaks by Wednesday afternoon.






     Low will send cloud over the area for Thursday, High just to the South East. Cooler Temps.



      AVALANCHE ACTIVITY:

     An avalanche has killed a skier in the Titlis Mtns, Switzerland. Article below.             Net Pic

      Wet snow avalanche causes damage to Austrian Homes: Article below.                       Net Pic

      From Northern B.C. Over 1000 meter crown. Treaty Creek.                           Simon Lacroix Image


Locally some Sz 1 vssl on steep terrain Na Sc. Dry Loose Sz 1.


      INFORMATION & OBSERVATIONS:

      Monday morning, 08:30 Hrs. +3 Deg C.

      Not much skier compaction going on here.

      We received 13 cm in 24 hrs, 11 cm since Monday am. Base is 60 cm at 1570 meters.

      Snow was accumulating at 1570 meters on Monday afternoon.

     +1 but snowing in the valley in the afternoon. Freezing level cooperating so far!! 


LOCAL AVALANCHE CANADA MIN REPORTS:

Lazy Boy: Dec 5, 2020

Disease Ridge: Dec 7, 2020

Lower Flute: Dec 7, 2020


VIDEOS:

Powder Picker Monday Dec 7, 2020: David Jones


ARTICLES:

Avalanche claims skier's life in Central Switzerland: SwissInfo

Wet snow avalanche in Hopfgarten: Austria

December 2020 Updated Forecast: Severe Weather Europe

Escaping the Covid-19 Pandemic, new backcountry adventurers put pressure on rescue services: Globe & Mail

What to choose and Why--Avalanche Tool Primer: Wild Snow

Climber falls 15 feet into Fumarole on Mt Hood: Oregon

Virtual exhibit takes an in depth look at Canada's avalanche history: Joel Barde 

Private aeromedical rescue company can now respond within B.C. Parks: TEAAM

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