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Archived

Avalanche Forecast

Dec 27th, 2021–Dec 28th, 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
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.

Cold, short days and very slow, cold snow characterize conditions at the Pass this week. Hypothermia is a real beast at the moment, not to be flirted with!

Throw on some warm layers, a headlamp in your pack, and some cold wax on your skis.

Weather Forecast

No need to mince the forecast, it will be cold.

Tonight: Clear. -25*C, light W winds

Tues: Mix of sun/cloud, -24*C, light NW winds

Wed: Still cold, -24*C, light W winds

Thurs: Cloudy, -21*C, light W winds

Snowpack Summary

50cm of 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 faceting of the snow directly above and below (especially in scoured, shallow areas). Beneath the Dec 1 crust, the snowpack is dense and strong.

Avalanche Summary

Minimal natural avalanche activity in the last 24hrs. One size 3.0 avalanche out of the MacDonald Gullies and several other size 1.5 avalanches through the highway corridor within the last 48 hrs.

Confidence

Avalanche Problems

Wind Slabs

50cm of recent snow and moderate, variable ridge-top winds, have formed slabs along ridge tops, including reverse-loading on S and W aspects.

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.
  • Keep an eye out for reverse loading created by N-NE winds.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5