4 Mar 2020

March 4, 2020

   YESTERDAY:

    Sunrise was at 06:50 Hours Tuesday morning.

    Valley cloud lifted quickly.

    Tuesday March 3, 2020. 12:00 Hrs. -3.7 Deg C with a 20-40 KPH SE wind.

    Image from around the same time frame as above pic.

    Big picture Tuesday afternoon. Still some precip coming our way.

    By 17:00 Hrs it was snowing lightly. -4 Deg C with a 30-60 ESE wind.

    Top of the world Tuesday.

    Cone of Silence still exists at Sun Peaks.

    Great skiing in a bit of fresh snow.

    Cool rimed trees.

    Fun terrain at Sun Peaks!!!



Weather Observations for March 4, 2020 taken at 06:00 Hours.

2240 meters    -12, Winds were 30-40 KPH SSW--Horstman Hut
2180 meters    -11, Winds were 30-50 KPH SSW--Whistler Peak
1860 meters    -10, Winds were 10-20 KPH SSW --Rendezvous 
1835 meters    -  9, Winds were 25-45 KPH SW--Round House
1650 meters      -7, 5 cm in 12 Hrs, 5 cm in 24 Hrs, Base 253 cm --Pig Alley
1560 meters      -7, 3 cm in 12 Hrs, 3 cm in 24 Hrs, Base 176 cm--Catskinner
  660 meters      -1, Valley Temp, Max temp Yesterday was +3.5, 1.2 mm of precip yesterday.

    As of 07:00 Hrs this am we have broken cloud and unlimited visibility.



FORECAST:

A weak upper ridge builds this morning with a mix of sun, cloud, and periods of intermittent light flurries. A weak warm front will arrive tonight with periods of light precipitation into Thursday morning. A vigorous cold front and associated cold deep trough will bring light to moderate precipitation into early Friday morning with strong winds in a South Westerly flow aloft. A cool upper level trough will bring unsettled weather for Friday and some flurries on Saturday. More unsettled weather for Sunday. Guesstimates: 2-6 cm by Thursday morning, 20-30 cm by Friday morning, 0 cm by Saturday morning.



     GOES IR image from this am.


     Upper level ridge for today with the FL hovering just around surface.





    Fronts along the coast.

         Deep low to our North will send a vigorous cold front our way. FL will likely rise to 1000 M.





          Cool weak upper trough will bring unsettled weather with the FL below surface.




    AVALANCHE ACTIVITY:

    Early Tuesday. Avalanche mitigation on Whistler produced a few Xe Sz 1.5 windslabs, Sz 2 Xc.

    No new avalanche activity observed on Blackcomb.




    INFORMATION & OBSERVATIONS:

    Off on a hike.

    Avalanche fence line.

    Signage on the closure fence.

    Lots of information for those wishing to go outside the Ski Area Boundary.



    Snow Beast consuming a tree.

    Or maybe it's his nose!!

    Got to go up a T-Bar.

    A fixed grip double.

   A poma lift. Awesome variety.




AVALANCHE CANADA MIN REPORTS:

Chief Pascall: March 2, 2020

Vantage: March 3, 2020

Spearhead: March 3, 2020



VIDEOS:

Whistler weather with meteorologist: David Jones

Wind, cornices & facets: Avalanche Guys

Avalanche Survivor: Bozeman Groomer

Thermal imaging of an avalanche: CAIC



ARTICLES:

Snowmobilers survive avalanche on Rabbit ears as slide danger grows in the backcountry: Colorado

Snow Avalanche Dynamics: Geosciences

Avalanche closes Hwy 37A into Stuart: Interior News

New proposal calls for overhaul of avalanche barriers: Iceland

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