YESTERDAY:
Just about there, 1 Hour to upload.2240 meters -11, Winds were 10-15 KPH NNE--Horstman Hut
1860 meters -9, Winds were 15-20 KPH N --Rendezvous
1570 meters -8, 2 cm in 12 Hrs, 4 cm in 24 Hrs, Base 200 cm--Catskinner
FORECAST:
A ridge of high pressure will bring sunny skies in a North Westerly flow aloft. The FL should hover around or slightly above surface. Cloud will begin to push in this afternoon as the next weather system pushes down the coast. Thursday will see periods of light precip all day easing off with flurries by early Friday morning. Ridge rebuilds for Friday with a mix of sun and cloud. Another weak weather system for Saturday with periods of light precip into Sunday. Models are not agreeing with the weekend, chance it may dry out, time will tell. More on that in tomorrow's post. Dry weather expected early next week. Guesstimates: Trace to 2 cm by Thursday am, 4-8 cm by Friday am, 0-trace by Saturday am, 2-6 cm by Sunday am.
AVALANCHE ACTIVITY:
Three ski tourers feared dead in massive avalanche near Silverton, CO. Article below. Net PicFrom Sea to Sky Avalanche Advisory:
Avalanche Summary
Avalanches are expected to remain easy to trigger on Tuesday in many areas, especially in wind loaded terrain at higher elevations.
There have been reports of size 1-2 natural, human and explosives triggered avalanches every day since Saturday. Many of these avalanches have failed on the recently buried persistent weak layer.
Snowpack Summary
50-100 cm of recent fresh 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. In shallow rocky areas, it may still be possible to trigger this layer. In deeper snowpack areas, it appears to be unreactive.
INFORMATION & OBSERVATIONS:
SPAW for Sea to Sky Area.LOCAL MIN REPORTS:
Coast Mountain Guides AST 2: Feb 2, 2021
Chief Pascal: Feb 2, 2021
VIDEOS:
Persistent Slab Avalanche Problems: Avy Savvy
Whistler Powder Picker Feb 2, 2021: David Jones
ARTICLES:
Three Eagle county ski tourers feared dead in massive avalanche near Silverton: Colorado
Hazardous conditions suspend search for three buried backcountry skiers: Colorado
More info on two deadly avalanche accidents in the Stubai Alps: Austria
Avalanche death toll in the Alps continues to climb: Planet Ski
Majority of Swiss want Ski Resorts closed if Covid-19 worsens: Planet Ski
High avalanche danger continues in parts of the Alps: Planet Ski
Avalanche Myths with avalanche tech: Martina Halik
Having the Flow leads to a smarter Go/No Go: Powder Cloud
Submit your best avalanche photo to for a pair of Goggles Feb 1-28, 2021. Sea to Sky Area.
Thanks to Volkl Canada for sponsoring.
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