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Avalanche Forecast

Archived

Dec 28th, 2021–Dec 29th, 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.

I wouldn't be Canadian if I didn't mention the weather...it's cold, eh?

Temper your touring ambitions with conservative decisions and come back safely to the trailhead with plenty of daylight left (and all your digits)!

Weather Forecast

Continuing cold through the rest of the week.

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

Wed: Mix of sun/cloud, trace snow, -23*C, light NW winds

Thurs: Cloudy, -22*C, light W winds

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

Snowpack Summary

50cm of cold, faceted snow sits on top of previously faceted surfaces. Pockets of slab can be found at all elevations, especially 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

Minimal natural avalanche activity in the last 24hrs. One size 2.5 avalanche out of Lone Pine (Mt Tupper), failing on the Dec 1 crust, and one sz 2.5 wind slab from both MacD #10 and Mannix in the more recent snow.

Human triggered avalanches are still possible, see MIN reports from 8812 Bowl and Grizzly Couloir.

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.