6 Mar 2021

March 6, 2021

     YESTERDAY:

      Sunrise was at 06:47 Hrs Friday. -2 with a 30-70 KPH ESE wind.

      Looking like winter Friday am.

      Good idea to have an umbrella on wet waits.

.       Good turns to be had depending on where you decide to venture too. Steep was your friend.

      60-100 KPH South- South East winds at 1860 meters.


     Snowline was just below 1100 meters in the pm.

      It was a fun day.


      Friday March 5, 2021. 14:00 Hrs. -4 with a 75-90 KPH ENE wind. +3 in the valley.

      Satellite image from Friday afternoon.

      Different perspective from Friday afternoon.


      A few breaks around 16:30 Hrs. -1 with a 5-15 KPH West breeze.


Weather Observations for March 6, 2021 taken at 06:00 Hours.

2240 meters      -9, Winds were 35-45 KPH SE--Horstman Hut
2180 meters      -7, Winds were 40-60 KPH ENE--Whistler Peak
1860 meters      -6, Winds were 15-25 KPH SE --Rendezvous 
1835 meters      -6, Winds were  15-30 KPH ESE--Round House
1650 meters      -5, 5 cm in 12 Hrs, 28 cm in 24 Hrs, Base 295 cm --Pig Alley
1570 meters      -5, 4 cm in 12 Hrs, 23 cm in 24 Hrs, Base 214 cm--Catskinner
  660 meters       0, Valley Temp, Max temp Yesterday was +4.9, 18.7 mm of precip yesterday.



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


FORECAST:

A weak upper trough and weak surface ridge will bring unsettled weather in a Westerly flow aloft. We can expect light snow this am with some breaks by the afternoon, followed by more light snow. The FL might go up as high as 800-1000 m? then drop back down to surface tonight.  A cold front arrives tonight with periods of light precip into Sunday with the FL hovering around or just above surface. Upper low slides down the coast Monday with overcast skies expected, with the possibility of a few flurries in the afternoon. An upper ridge builds for Tuesday with a mix of sun and cloud. Ridge strengthens Wednesday with mostly sunny skies. Guesstimates: 5-10 cm by Sunday am, 8-12 cm by Monday morning, 0-trace by Tuesday am, 0 cm by Wednesday am.


      GOES IR image from this am.
   

    A weak upper trough and weak ridging will bring unsettled weather for today with periods of snow.





      South Westerly flow aloft.

      Low will bring a cold front for Sunday with periods of light snow.





       Upper low will bring overcast skies for Monday.

      Low will bring overcast skies for Monday. Chance of a brief afternoon flurry.


      AVALANCHE ACTIVITY:

      An avalanche in Afghanistan has killed 14 people. Article below.                                       Net Pic

      Avalanche buries Klondike Hwy. Article below....                                                  Net Pic


      Soft slabs in steep treed terrain yesterday in Crystal Zone. Sz 1's Sa Sc.

      AC on Blackcomb produced, some Sz 1 soft slabs Sc. Some Sz 1 wet loose Na below treeline.

      Avalanche control on Whistler produced mostly Sz 1 some  Sz 2 Storm slabs Xe Sc.


From Sea to Sky avalanche advisory:

Avalanche Summary

On Friday, operators reported several small (size 1) storm slab avalanches from ski cuts at treeline and belowtreeline elevations, as well as small natural loose wet avalanches below 1600 m.

Snowpack Summary

Impressive snow totals of 50-80 cm blanketed slopes above 1600 m across the region on Friday. This snow was accompanied by strong south winds, forming touchier slabs on leeward slopes. Massive cornices exist on ridgelines, which can act as triggers on slopes below. A cooling trend over the weekend is expected to settle and strengthen lower elevation slopes that became saturated with rain. 

In isolated areas with a shallower snowpack in the region, a layer of facets, spotty surface hoar, and/or crusts buried in mid-February may still be preserved. There have been no avalanches reported on this layer; however, large triggers, such as an avalanche in motion, cornice fall, or intense loading from snow and wind have the potential to this deeper layer in areas where it may still exist.

The mid and lower snowpack is well settled and strong in most areas.


      INFORMATION & OBSERVATIONS:

      We have had 940 cm of snow measured at 1650 m so far this winter season.

     Storm skiing with no alpine lifts. Snowed most of the day!

      Amazing where snow will accumulate and hang in there.

     Keeping the skis cool, 0 Deg C with a 50 % mix of snow and water in the valley. 

      By 14:00 Hrs Friday we had 23 cm of new snow measured on a different board at 1650 meters.

        Dried out by days end, some patches of blue.


FROM SEA TO SKY MIN REPORTS:

Too Deep: March 5, 2021

Below Hanging Lake: March 5, 2021


VIDEOS:

Avalanche off Mt Roberts: Juneau, AK

Different perspective of above avalanche: Juneau, AK

Powder Windsurfing: Swiss Alps

North Shore Avalanche Conditions: North Shore Rescue

Powder Picker March 5, 2021: David Jones


ARTICLES:

14 dead in Afghanistan avalanche: Badakhshan Province 

South Klondike Highway remains closed due to avalanche: Yukon News

Specially trained avalanche team based in the North Rockies: Avalanche Canada

Backcountry Skiing sees resurgence-and the deadliest week for avalanches since 1910: USA

Educators, Influencers roll out new social media campaign to promote avalanche awareness: Colorado

Avalanche blocks Bishkek-Osh road: Kyrgyztan



       Submit your best avalanche photo for a pair of  Goggles March 1-31, 2021. Sea to Sky Area.

                                                    Thanks to Volkl Canada for sponsoring.


     Winner of the Photo contest for February is Chuck Ratzlaff. A picture can be worth 1000 words!

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