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Avalanche Forecast

Archived

Nov 17th, 2020–Nov 18th, 2020

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

Wind slabs continue forming in the Alpine. Still early season conditions with hazards hiding just below the snow surface.

Confidence

Moderate -

Weather Forecast

Wednesday is expected to bring light flurries with temperatures steadily dropping to -7c throughout the day. The strong SW winds will continue for the day and easing by evening. Light snow is expected for Thursday.

Avalanche Summary

No new avalanches were observed today.

Snowpack Summary

Lower elevation skiing is hazardous. The November 5 crust is carrying the weight of skiers in most areas. The strong SW winds from Wednesday will continue into Thursday afternoon, only to add to the wind slab problem. Lee features will be an area of conern.

Terrain and Travel

  • Be careful as you transition into wind affected terrain.
  • Approach lee and cross-loaded slopes with caution.

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.