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Avalanche Forecast

Archived

Dec 2nd, 2023–Dec 3rd, 2023

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Early Season
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Early Season
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Early Season

Regions

Jasper, Churchill, Fryatt, Maligne, Marmot, Miette Lake, Pyramid.

Higher elevations could see the development of reactive wind slabs over the next couple days. Be very cautious in, or below, areas with enough snow to avalanche.

Confidence

Low

Avalanche Summary

No new avalanche activity has been observed in this region in the past week.

Snowpack Summary

There is surface hoar up to 10mm in sheltered areas, and a thin sun crust on south and west aspects. The snowpack at tree line is generally 20-30cm in depth, and very facetted and weak.

Weather Summary

A frontal system moving across the region on Sunday will bring 2-5cm of snow and strong SW winds at ridge top.

The Mountain Weather Forecast is available from Avalanche Canada https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.
  • Fresh wind slabs will likely form throughout the day, diligently watch for changing conditions.

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.