YESTERDAY:
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Still takes up way to much Time.
2240 meters -9, Winds were 45-55 KPH NNE--Horstman Hut
1860 meters -7, Winds were 15-30 KPH S --Rendezvous
1560 meters -5, 13 cm in 12 Hrs, 42 cm in 24 Hrs, Base 156 cm--Catskinner
FORECAST:
A weak shortwave trough will bring periods of light precip this morning in a Westerly flow aloft. The FL will hover around 800-1000 meters dropping to surface tonight. The precip will taper off later this afternoon/evening with dry conditions until the next front arrives around midnight with light to moderate precip into Monday in a South Westerly flow aloft. The FL will likely bump back up to around 1000-1300 meters with a drying period sometime around noon on Monday with some lingering flurries. Yet another frontal band arrives early Tuesday morning with light precip ramping up by the afternoon with moderate precip and strong winds. This front will continue into early Wednesday morning tapering off later in the am, drying out into Thursday. Guesstimates: 18-22 cm by Monday morning at 06:00 Hrs, 8-14 cm by Tuesday am, 30-40 cm by Wednesday am, 1-4 cm by Thursday am.
AVALANCHE ACTIVITY:
Contest for who can send me the best avalanche shot from now to January 17, 2021, Sea to Sky.
Marker Goggles, Case and extra lens. Thanks to Volkl Canada.
Avalanche Summary
Avalanches are expected to be large and widespread on Sunday, storm slabs as well as persistent slab avalanches.
Numerous storm slab avalanches, natural and explosive triggered size 1-4 (!) were reported on Saturday. This MIN report from Friday illustrates the active avalanche conditions during this storm.
Several large persistent slab avalanches have been reported over the previous week:
There was a fatal avalanche in the South Coast Inland region (near the Sea to Sky boundary) north of Pemberton in the Railroad Pass area on Monday that resulted in two fatalities. It was reported to be a size 2 persistent slab avalanche on a west aspect, around 1650 m. The RCMP press release can be viewed here, and the Avalanche Canada report can be found here.
A size 2.5 avalanche was triggered on Monday by a skier on Rainbow Mountain, which resulted in a full burial and, thankfully, a successful rescue. The avalanche failed on a 60 cm deep crust and facet layer on a northeast aspect around 1800 m.
A natural size 3 persistent slab avalanche was reported on Mount MacBeth on Monday, check out this MIN report for details of this observation.
These avalanches highlight the ongoing potential to trigger persistent weak layers in the snowpack.
Snowpack Summary
There may be as much as 20-50 cm of new snow between Saturday night and Sunday afternoon, forming widespread storm slabs. This brings recent storm totals to well over 100 cm.
The snowpack is currently quite complex. The layer of greatest concern is a melt-freeze crust from early December, found around 100-200 cm deep in the snowpack. This crust may have surface hoar or sugary faceted grains sitting above it. There have been several recent large natural and human triggered avalanches on this layer.
INFORMATION & OBSERVATIONS:
LOCAL AVALANCHE CANADA MIN REPORTS:
Red Heather Hut: Jan 2, 2021
VIDEOS:
Snow Immersion Suffocation and Tree Wells: SIS
Remote triggering of slab avalanches: CAIC
ARTICLES:
WANTED any transceiver either working or not:
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