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Avalanche Forecast

Archived

Nov 11th, 2020–Nov 14th, 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.

Daily avalanche forecasts are due to start on Tuesday December 1st. If you're heading into the mountains before then, check out this article on assessing early season conditions.

Weather Forecast

Avalanche Canada's Mountain Weather Forecast is a great regional-scale resource for up-to-date weather information. Here you'll find snow amounts, freezing levels and other aspects of weather important to assessing winter conditions in the mountains.

SPOTWX is a good resource for local scale weather forecasts.

Snowpack Summary

10-15 cm new snow fell Tuesday night. Fresh snow sits over a 20-40cm soft Wind Slab in areas with enough snow to try skiing. Many alpine start zones were scoured to ground by the strong SW winds that followed our previous storm. Protected leeward slopes have drifts up to 1.5m deep. We suspect a thick melt freeze crust exist near ground above 2000m.

Avalanche Summary

Extremely limited observations.

Confidence

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.