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Avalanche Forecast

Archived

Nov 21st, 2016–Nov 22nd, 2016

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.

Regions

Kananaskis.

Isolated pockets of wind slab are still sensitive to human triggering in steep and unsupported terrain.

Confidence

Moderate -

Weather Forecast

Tuesday will be mainly cloudy with no precipitation expected. Winds will be out of the SW at 25km/h at ridge-top and Alpine temperatures should reach a high of -8 °C. Longer range forecasts are calling for a small amount of new snow (around 5cm) to fall on Thursday.

Avalanche Summary

No new avalanches observed or reported in the past 48hrs.

Snowpack Summary

At treeline up to 20cm of low density snow is overlying Nov 12th crust. Isolated wind slabs are present in the Alpine in lee and cross loaded features. There is an average of 50-60cm of snow at 2200m and this depth tapers quickly with elevation.

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.