Avalanche Forecast

Archived

Feb 2nd, 2021–Feb 3rd, 2021

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

Jasper.

Be patience and cautious with the storm snow. The whole snowpack will need a little time settle with the new load.

Ice climbers beware of the significant new load on benches and ledges.

Weather Forecast

Snowpack Summary

Storm total of 30cm accumulated in the Icefields region. New snow over a mixed, facet interface to a strong mid-pack. Bond at the storm interface showing mixed results through the forecast region.

Avalanche Summary

Avalanche control team on the Icefields Parkway got good results on the storm interface with large explosives.

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Confidence

Problems

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.

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.