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Avalanche Forecast

Archived

Dec 3rd, 2016–Dec 4th, 2016

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

South Rockies.

We are currently unable to issue danger ratings for this region due to lack of information and data. It's important to make observations and assess avalanche hazard as you travel.

Confidence

-

Weather Forecast

Unsettled conditions continue on Sunday as another Pacific frontal system tracks eastward across the region. This will bring cloudy skies and snow accumulations 5-10 cm. Ridgetop winds will be strong from the west switching light from the northwest midday Sunday. Cold arctic air will influence the region Monday and Tuesday. Alpine temperatures will drop to -25 with light winds from the northeast.

Avalanche Summary

No recent avalanche observations have been reported.

Snowpack Summary

Early season snowpack observations are still very limited in the region but the threshold for avalanches is expected to have been exceeded at treeline and in the alpine. Limited reports suggest snow surfaces at higher elevations are wind-affected. This suggests wind slabs should be on your radar at treeline elevations and in the alpine. Kananaskis Country to the north andĀ  Waterton to the south of the region is currently reportingĀ  30-50 cm of snow overlying the mid-November crust layer. Conditions are likely similar in the South Rockies.

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.