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Avalanche Forecast

Archived

Feb 27th, 2022–Feb 28th, 2022

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, 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

Jasper.

With the incoming storm there is potential for new wind slabs in the alpine and tree line. 

Weather Forecast

Monday - Flurries. Accumulation: 6 cm. Alpine temperature: High -4 °C. Ridge wind southwest: 10-25 km/h. Freezing level: 1700 metres.

Tuesday - Flurries. Accumulation: 7 cm. Alpine temperature: Low -5 °C, High -3 °C. Ridge wind southwest: 15 km/h gusting to 50 km/h. Freezing level: 1900 metres.

Snowpack Summary

1 cm of new snow over sun crust on solar slopes. New snow has been accompanied by strong westerly winds, suspect new wind slab formation on lee slopes in the alpine and tree line elevations. Alpine stripped to rock at ridgetop & open features. There is weak snow layer at the bottom of the snowpack, this is widespread throughout the park.

Avalanche Summary

1 new size 2 slab avalanche observed on Feb 26 on the Churchill Slabs. Date of avalanche is unknown. 

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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.