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Avalanche Forecast

Archived

Nov 5th, 2020–Nov 6th, 2020

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

Regions

Kananaskis.

No field observations. Snow amounts will very from area to area, There is potential for the avalanche hazard to rise quickly. Some forecast show more snow than others making it hard to forecast snow amounts. Travel at lower elevations will be poor due to the amount of rain.  

Confidence

Low - Uncertainty is due to limitations in the field data. Recent weather patterns have resulted in a high degree of snowpack variability within the region.

Weather Forecast

Temps will continue to cool off over the next few days rains should turn to snow at most elevations. Mod overnight west winds in alpine continuing as the cold front moves through the region.

Avalanche Summary

No observations

Snowpack Summary

Moderate rain to 2250m along with strong winds at tree line and above. Very limited observation of any alpine feature with snow on it, as the all peaks were obscure. Would suspect that there will be wind slabs forming and new cornice growth.  

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Avoid freshly wind loaded terrain features.
  • Avoid areas with overhead hazard.

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.