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Archived

Avalanche Forecast

Dec 29th, 2021–Dec 30th, 2021
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

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

Avalanche Problems

Wind Slabs

Moderate, variable winds have formed 5-30cm slabs on open features at all elevations, including reverse-loading on S and W aspects. If triggered, these slabs could possibly step down to the Dec 1 crust, approx 70-120cm deep.

  • If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
  • Keep an eye out for reverse loading created by N-NE winds.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2.5