YESTERDAY:
Sunrise was at 07:39 Hrs on Saturday.2240 meters -11, Winds were 5-10 KPH NNW--Horstman Hut
1860 meters -8, Winds were 5-10 KPH W --Rendezvous
1570 meters -7, trace in 12 Hrs, trace in 24 Hrs, Base 182 cm--Catskinner
FORECAST:
A weak surface trough will bring periods of very light snowfall in a North Westerly flow aloft. The FL will remain below surface. Mostly cloudy today with some afternoon sunny breaks. Unsettled Monday with a mix of sun and cloud, flurries are possible. Colder as the artic air pushes onto the coast. Tuesday looks unsettled but could be mostly cloudy with the chance of some flurries. Guesstimates: 1-3 cm by Monday am, trace-1 cm by Tuesday am, trace-2 cm by Wednesday am.
AVALANCHE ACTIVITY:
Four skiers have been killed in an avalanche at Wilson Glade, Utah. Article below. Avalanche control on Whistler produced Sz 1 soft slabs, 10 cm. Xe, Sc, Xc.From Sea to Sky Avalanche Advisory:
Avalanche Summary
Explosive control work conducted over the last few days have produced size 2 cornice and storm slab avalanches. Skier triggered wind slabs up to size 1.5 were reported on Thursday.
Earlier in the week, many of the numerous size 1-2 natural, human and explosives triggered avalanches were reported to have failed on the recently buried persistent weak layer.
Snowpack Summary
Wind slabs on a variety of aspects are likely beginning to facet and lose cohesion in the cold temperatures. 50-100 cm of snow sits on a persistent weak layer that consists of facets at upper elevations, surface hoar in sheltered areas, a melt-freeze crust below 1900 m, and a sun crust on south-facing slopes. There could be more than 100 cm on this layer in wind loaded areas.
A crust from early December may be found around 200+ cm deep in the snowpack. Under the current conditions, it has been unreactive.
INFORMATION & OBSERVATIONS:
Lining up at 07:00 Hrs.LOCAL MIN REPORTS:
Gin Peak: Feb 6, 2021
Joffre Shoulder: Feb 6, 2021
Sky Pilot Trees: Feb 6, 2021
East Knob of Black Tusk Meadows: Feb 6, 2021
Rohr Ridge: Feb 6, 2021
VIDEOS:
Avalanche Footage: Chamonix
Using Drones in Ski Area Operations: Val Thoren, France
Square Top Avalanche Accident: Utah
Powder Picker Feb 6, 2021: David Jones
ARTICLES:
Four die in deadly Mill Creek Avalanche: Utah
Over 100 people dead after Himalayan Glacier crashes into dam: India
Park City avalanche victim was a seasoned backcountry skier: Utah
Park City ski patrollers, locked in negotiations with Vail Resorts: Utah
Sahara Sand turns Snow Orange: Alps & Pyrenees
Special weather statement for South Coast: Whistler
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