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Avalanche Forecast

Archived

Dec 5th, 2019–Dec 8th, 2019

Alpine
Natural avalanches unlikely.
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

Waterton Lakes.

Recent warm temperatures have created a breakable crust up to 2200m. This crust makes travel possible but ski quality is low. Ice climbs are melting out. The Akamina Parkway remains closed to public access due to construction.

Weather Forecast

Friday: A mix of sun and cloud with isolated flurries on the western side of the divide. West winds 50 gusting 70.

Saturday: 5-10mm of precipitation. Freezing level 1700m dropping to valley bottom in the evening. Strong SW winds

Sunday: 5-10 cm of snow. Strong SW winds.

Snowpack Summary

Recent Warm temperatures have created a weak melt freeze crust on all aspects up to 2200m. Areas that still hold snow will have windslab overlying a variety of bed surface including bare ground, and a melt freeze crust where snow from the late Sept. snowfall did not melt out. Snowpack depth varies from 0 -70cm.

Avalanche Summary

No new avalanches observed.

Confidence

Intensity of incoming weather systems is uncertain on Saturday

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.