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Avalanche Forecast

Archived

Feb 21st, 2022–Feb 22nd, 2022

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

Regions

Kananaskis.

The ski quality has drastically improved. But you can still feel that crust when breaking trail and skiing down most features. 

Confidence

High -

Weather Forecast

Its a backwards time. Winds coming straight out of the east is abnormal for us. Tuesday wont be any warmer (-30!!!), but the sun should be out in full force.

Avalanche Summary

A few loose dry (sluffs) avalanches to size 1.5 on both East and West Aspects at TL. 

These started in steep (45 degrees +) start zones and stopped well in the tracks and only entrained the surface snow.

No slab activity noted today

Snowpack Summary

Up to 35cm of recent storm snow has fallen at tree line in the last storm. This snow overlies widespread wind effect at all elevations and sun crust in steep solar features. Field teams today found that the bond at the storm snow interface is variable, ranging from poor to good. Above 2400m the recent variable winds have formed wind slabs on all aspects. 

Terrain and Travel

  • Avoid freshly wind loaded terrain features.
  • Be alert to conditions that change with elevation and wind exposure.
  • Wind slabs may be poorly bonded to the underlying crust.

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.