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Avalanche Forecast

Archived

Nov 8th, 2020–Nov 11th, 2020

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Waterton Lakes.

Waterton received 50cm of low density snow in the past 72 h. This should set us up nicely for a great ski season but early season hazards require a cautious approach. The Akamina Parkway is closed as of the the writing of this bulletin. 

Weather Forecast

Tonight- Isolated flurries with a low of -12. West winds increasing to 40km/h

Monday - Cloudy with sunny periods. freezing levels remaining a valley bottom with trace precipitation. 50km/h west wind gusting 70km/h in the afternoon.

Tuesday- Mostly Cloudy with isolated flurries. High of -5 with moderate SW winds.

Snowpack Summary

50 cm of low density snow has fallen in the past 72 h. This snow has fallen on bare ground below 2100m. Above this elevation, new snow sits above a a 5-10 cm thick rain crust.

Avalanche Summary

Extremely limited observations due to adverse travel conditions.

Confidence

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.

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.