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Archived

Avalanche Forecast

Dec 26th, 2021–Dec 27th, 2021
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
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
2: Moderate
The avalanche danger rating at treeline will be moderate
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.

Northerly winds have been reverse loading some features, watch for new slab formation along ridge lines and cross loaded features.

Weather Forecast

The Arctic ridge of high pressure has barged its way into the region like my boisterous Uncle Jack at our family dinners. Temps will be cold on Monday with an Alpine high of -20 with light Westerly winds and a mix of sun and cloud.

Cold temps, clear'ish skies and light winds are settling in for the week, Brrrr. Slight warming trend by the weekend.

Snowpack Summary

50cm of snow recent snow is settling out on top of previously faceted surfaces. Pockets of slab exist in loaded areas. The Dec 1 crust is buried approximately 70cm-120cm, with facetting of the snow directly above and below (facetting in most prominent in shallower snowpack areas). Beneath the Dec 1 crust, the snowpack is dense and strong.

Avalanche Summary

One size 3.0 avalanche out of the MacDonald Gullies and several other size 1.5 avalanches through the highway corridor within the last 24 hours.

Confidence

Avalanche Problems

Wind Slabs

50cm of recent snow, combined with moderate variable ridge top winds have formed slabs in some locations. Recent valley bottom winds may have also built pockets of slab in open areas within the trees.

  • Variable winds have created pockets of wind slab on all aspects.
  • Use safe ski cutting techniques to enter your line.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5

Loose Dry

Low density surface snow has the potential to run far and fast in steep, confined features. Choose your terrain wisely and manage your sluff appropriately.

  • Be careful of loose dry power sluffing in steep, confined terrain.
  • Use caution above cliffs and terrain traps where small avalanches may have severe consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5