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Avalanche Forecast

Archived

Dec 27th, 2021–Dec 28th, 2021

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

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

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.