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Avalanche Forecast

Archived

Dec 5th, 2023–Dec 6th, 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.
Below Treeline
Early Season
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Early Season

Regions

Maligne, Marmot, Miette Lake, Pyramid.

The avalanche hazard has risen with Tuesday's storm and winds but is expected stabilize within the next few days. Remain vigilant for locally dangerous conditions.

Confidence

Moderate

Avalanche Summary

Tuesday's patrol noted nothing significant as the storm brought far less snow than the Parkway.

Snowpack Summary

Tuesday's 5-15cm of storm snow overlies a 10mm surface hoar layer or a thin sun crust on south and west aspects. SW winds continue to redistribute snow at treeline and above. The snowpack is generally between 30-40cm deep with a faceted or depth hoar base.

Weather Summary

Tuesday night will bring flurries, possibly 8 cm of snow, -4 °C, light-moderate winds, and 1500m freezing level. Wednesday will be clouds, flurries, maybe 5cm of snow, and -3 °C.

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

Terrain and Travel Advice

  • 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.