28 Mar 2021

March 28, 2021

     YESTERDAY:

      Sunrise Saturday was at 06:59 Hrs. -3 with a 5-10 SE Breeze.

     By 08:00 Hrs it was overcast. Peaks were obscured. 

      12:00 Hrs Increase in cloudiness! -1 with a 15-30 KPH SW wind.

     14:00 Hrs. -2 with a 20-45 KPH SE wind. +6 in the valley. Started snowing very lightly at 14:30.

      Satellite image from the same timeframe as above.

     16:00 Hrs. -2 with a 25-60 KPH SE wind. Snowing very lightly.




Weather Observations for March 28, 2021 taken at 06:00 Hours.

2240 meters      -6, Winds were 70-100 KPH SE--Horstman Hut
2180 meters      -5, Winds were   60-85 KPH ESE--Whistler Peak
1860 meters      -4, Winds were   30-50 KPH SE --Rendezvous 
1835 meters      -4, Winds were   15-30 KPH SE--Round House
1650 meters      -2,  14 cm in 12 Hrs, 14 cm in 24 Hrs, Base 287 cm --Pig Alley
1570 meters      -2,  11 cm in 12 Hrs, 10 cm in 24 Hrs, Base 201 cm--Catskinner
  660 meters     +2, Valley Temp, Max temp Yesterday was +7.1, 6.0 mm of precip yesterday.
;

Environment Canada considers:
Light precip-trace-2.5 mm per hour.
Moderate precip- 2.6 mm -7.5 mm per hour
Heavy precip -7.5 mm per hour and greater.

Max winds last night were 110 KPH at 2180 m, 126 KPH at 2240m.

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




FORECAST:

A strong cold front will push through today in a South Westerly flow aloft. The FL spiked yesterday afternoon but has been slowly dropping below 1500 meters since 22:00 Hrs last night. Trend should continue through the day reaching below surface with the passage of the cold front later today. As the front passes tonight we will transition to a Northerly flow aloft with ridging developing, bringing sunny skies for Monday. Tuesday is looking mostly sunny as well, with a few clouds in the mix. Unsettled Wednesday am, with an increase in cloud cover as the day progresses. Another weak front arrives for  Thursday, April 1, 2021. Unsettled weather for Friday. Guesstimates: 15-20 cm? by Monday am, 0 cm by Tuesday am, 0 cm by Wednesday am, 0 cm by Thursday am. Models are calling for more precip today, looks like the moisture plume may go South. Time will tell.


      GOES IR image from this am.


       Cold front pushes through today with moderate winds and light precip. Cooling trend.





      South Westerly flow aloft.

      Ridge builds for Monday.





        High in control for Tuesday, 


      High pressure for Tuesday.


      AVALANCHE ACTIVITY:

      No new avalanches observed on Whistler. 1 Sz 2.5 1 Sz 3 Xc. Cornices are still an issue.

      No new avalanches observed on Blackcomb. 1 Sz 2.5 Xc.

                          Recent Sz 3 cornice failure, Petersen Zone. More to come. Paige Bell Pic.



From Sea to Sky Avalanche Advisory:

Avalanche Summary

A few cornices were triggered naturally and from explosives on Tuesday, Wednesday, Thursday and Friday. They were very large, as is expected at this time of year. Expect to see an increase in storm and wind slab avalanches on Sunday as new snow accumulates and the wind blows strong from the southwest. 

Snowpack Summary

Another 15-25 cm of new snow may have fallen Saturday night. This sits above a widespread melt freeze crust, with the exception of high north-facing terrain. It may also be sitting on small surface hoar crystals reported on north and east aspects in the alpine.

Remember that cornices along ridgelines are large at this time of year and always have the possibility of failing naturally or from the weight of a human.



      INFORMATION & OBSERVATIONS:

      Looking South at 08:00 Hrs. -6 at 2240 meters with a 20-30 KPH South wind.

      Looking North at 08:00 Hrs. -6 with a 20-30 KPH WSW wind.

      By 10:00 Hrs Whistler Peak was obscured. -5 with a 25-30 PKH South wind.


      Relatively quiet at 13:30 Hrs in the village base area.

     16:30 Hrs.  0 Deg C with a 25-40 KPH South wind. FL spiked to 1860 m yesterday afternoon.

     From Thursday in the Ipsoot Area. Awesome shot from Paige Bell.

      Yesterday we received 6 mm of precipitation at 660 meters. 




FROM SEA TO SKY MIN REPORTS:

Fog Fest comes to Anniversary Glacier: March 26, 2021

Cayoosh Armchair Glacier: March 27, 2021

Garibaldi Lake: March 27, 2021

Chief Pascall Pleasantries: March 27, 2021

This day was Bananas: March 27, 2021



VIDEOS:

Ski Jumper loses control: Ouch

Powder Picker March 27, 2021: David Jones


ARTICLES:

Two brothers get lucky and survive an avalanche: Switzerland

Avalanche will temporarily close the road to Hatcher Pass: Alaska

Snowboarders' trial rescheduled: Colorado


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

                                                    Thanks to Volkl Canada for sponsoring.

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