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Avalanche Forecast

Archived

Dec 4th, 2023–Dec 5th, 2023

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

Regions

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

The avalanche hazard is expected to rise significantly Monday evening and all day Tuesday with the incoming storm.

Confidence

No Rating

Avalanche Summary

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

Snowpack Summary

New storm snow now overlies the December 2nd interface, which consists of surface hoar up to 10mm, a thin sun crust on south and west aspects, and facets. Strong SW winds continue to redistribute snow at treeline and above. The snowpack is generally between 20-30cm in depth with a faceted base.

Weather Summary

An atmospheric river has hit the west coast, and with it, warm temps, mixed precip, and high winds will create challenging conditions for all travel.

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

Terrain and Travel Advice

  • Fresh wind slabs will likely form throughout the day, diligently watch for changing conditions.
  • Be carefull around freshly wind loaded features.

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.