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Avalanche Forecast

Archived

Nov 28th, 2019–Nov 29th, 2019

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

Regions

Jasper.

Be prepared for the weather as one would say. Clear skies and fairly cold temperatures are forecast for the next while.

Weather Forecast

High pressure system with cool temperatures and clear skies will remain in place with the exception of saturday with a slight warming trend to an alpine high of -8. The winds are forecast to remain light at all elevations. For more details: Avalanche Canada's, Mountain Weather Forecast.

Snowpack Summary

Some surface faceting of the recent 30cm of low density snow in the ice fields area. (less in Jasper town area) Previous reverse loading may have created wind slabs in the immediate lee in the alpine. This new snow is sitting on a variety of surfaces from wind scoured in the alpine to preserved surface hoar in the protected treeline features.

Avalanche Summary

No new avalanches observed or reported. No field observations for several days.

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.

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.