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Avalanche Forecast

Archived

Dec 29th, 2021–Dec 30th, 2021

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

Promising news is coming to our region...yes, moderating temps for the weekend will usher in a glorious start to 2022!

Until then, short objectives, a headlamp, and warm gear are strongly recommended.

Weather Forecast

Cold the next few days, however incoming light precip and moderating temps Sat/Sun

Tonight: Cloudy, isolated flurries, -24*C, moderate SW winds

Thurs: Mix of sun/cloud, -19*C, light W winds

Fri: Mix of sun and cloud, -20*C, light W winds

Sat: Cloudy with flurries, 4cm, -10*C, mod SW winds

Sun: Cloudy with scattered flurries, 4cm, -11*C, light SW winds

Snowpack Summary

50cm of cold, faceted snow sits on top of previously faceted surfaces. Pockets of slab (5-30cm thick) can be found at all elevations, along ridge-crests, on exposed alpine terrain, and in open features in the trees. The Dec 1 crust is buried approx 70-120cm, with faceting of the snow directly above and below (especially in scoured, shallow areas).

Avalanche Summary

Isolated, random natural avalanche activity in the last 24hrs. One size 3 avalanche out of Tupper 2, a cornice fall sz 2.5 in the Kors-Thomas bowl (did not pull out a slab), and a couple of thin surface wind slabs from Crossover and MacD #11.

Human triggered avalanches are still possible, see MIN reports from 8812 Bowl and NRC Gully.

Confidence

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.