2 Dec 2019

December 2, 2019

    YESTERDAY:

    December 1, 2019. 13:00 hrs. -5.9 Deg C with a 5-10 KPH east breeze. Snowing lightly.

    Warm front from the South moved in quickly Sunday morning.

    Looking Northeast as it moved in.

    Satellite image from Sunday afternoon.


Weather Observations for December 2, 2019 taken at 06:00 Hours.

2240 meters      -6, Winds were 45-60 KPH  SE--Horstman Hut
2180 meters      -6, Winds were 30-50 KPH SW--Whistler Peak
1860 meters      -4, Winds were 15-30 KPH S --Rendevous 
1835 meters      -3, Winds were 10-30 KPH WNW--Round House
1650 meters      -2, 4 cm in 12 Hrs, 4 cm in 24 Hrs, Base 30 cm --Pig Alley
1560 meters .    -3, 4 cm in 12 Hrs, 4 cm in 24 Hrs, Base  4 cm--Catskinner
  660 meters      -4, Valley Temp, Max temp Yesterday was -3.2, 1.0 mm of precip yesterday.



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



FORECAST:

A weak upper level trough will bring periods of light precipitation for today in a Northwesterly-Westerly flow aloft. The freezing level will rise to around 1400 meters later today as a warm front pushes through. A stronger front pushes through on Tuesday with the FL hovering in the 1500 meter range. The brunt of the precipitation will occur Tuesday night into early Wednesday morning. Weak ridging on Wednesday will bring dry unsettled weather into Thursday before the next upper level trough arrives Friday. Guesstimates: 4-8 cm by Tuesday morning above 1000 meters, 10-15 cm by Wednesday morning above 1200 meters., 4-8 cm by Wednesday morning above 1000 meters.


    GOES IR image from this am.


    Weak trough for today with rising freezing levels.






    Fronts along the coast.

    Stronger frontal band for Tuesday, warmish.





     Unsettled Wednesday with weak ridging.



     AVALANCHE ACTIVITY:

    Recent activity in Utah, article below.                                                                             UAC Pic


       INFORMATION AND OBSERVATIONS:

       For alternative activities, tour to Brew Lake and go skating.           Lucinda Sutherland Image

    Looking a bit grim!!!

    Facets and crusts but no shear results at this test pit. 110 Cm at 2000 m west side of the valley.

    We could use a few weeks of Pacific Frontal Systems.

    16:30 hrs on Sunday, looking more like winter. Snow making working their magic.



ARTICLES:

World's largest avalanche detection system to be put to the test: Rogers Pass

High Avalanche Danger: Sierra Avalanche Centre

UAC issues warning for Central and Southern Wasatch : Utah

Backcountry B.C. pushing for uphill skiing corridor on Blackcomb Mountain: Pique

More info from the avalanche that killed two skiers near Courmayeur: Italy


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