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Avalanche Forecast

Archived

Nov 25th, 2013–Nov 28th, 2013

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, 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

Waterton Lakes.

Isolated areas have reached threshold values and could produce avalanches. Very early season conditions exist. Rocks, stump, and alders would make for dangerous skiing BTL. Call 403 859 2224 during business hours for further information.

Weather Forecast

Forecasts call for warm, windy, and dry conditions for the period.

Snowpack Summary

In Alpine areas October snow now forms a firm basal layers.  Through November several snowfalls have accumulated above these layers most of which have settled rapidly with warm conditions. Last week brought about 20cm of snow with strong W winds that created windslabs. Warm temperatures since this time are encouraging settlement.

Avalanche Summary

Very little observed activity with few opportunities to make observations.

Confidence

Due to the number of field observations

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.