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Avalanche Forecast

Archived

Nov 26th, 2015–Nov 29th, 2015

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

Regions

Waterton Lakes.

Good early season skiing if you can fight your way out of the valley bottom.  Watch for slab development should the winds increase.

Weather Forecast

Continued clear skies and light winds, with temperatures on the rise into the weekend.

Snowpack Summary

Recent storm snow accumulations of up to 15cm of low density snow, this overlies a shallow early season snowpack which is generally well settled with no notable weak layers. Light to Moderate southwest winds on November 25th have created some pockets of soft storm slabs in the alpine and at treeline.

Avalanche Summary

No new activity has been observed.

Confidence

Due to the number of field observations on Thursday

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.