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Avalanche Forecast

Archived

Nov 23rd, 2021–Nov 24th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Kananaskis.

A little bit of snow has freshened the landscape, but be aware that previously formed wind slabs are now somewhat hidden. These wind slabs may be human triggerable in steep or unsupported terrain.

Confidence

Moderate -

Weather Forecast

By Wednesday morning up to 10cm of fresh snow will have fallen. Midday temps should reach -7 with moderate to strong SW winds. By late Wednesday the winds will be near 125km/h at ridgetop, with the same on Thursday.

Avalanche Summary

Nothing noted or reported today. 

Snowpack Summary

Up to 10cm of new snow in the past 24 hours, with less in the Eastern ranges (such as Highwood Pass). This overlies extensive amounts of tracks in the popular areas and wind slab most everywhere else. Alpine areas are extensively wind damaged with hard wind slabs present in most places. The November crust (now buried 20 to 30cm) tapers out quickly above 2200m.

Terrain and Travel

  • Approach lee and cross-loaded slopes with caution.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

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.