Avalanche Forecast

Issued: Dec 7th, 2019 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Storm Slabs and Persistent Slabs.

Avalanche Canada MBender, Avalanche Canada

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There is uncertainty with the presence and reactivity of several buried weak layers. Best to adopt a conservative approach while the snowpack adjusts to the increased load from recent snowfalls.

Summary

Confidence

No Rating - Recent weather patterns have resulted in a high degree of snowpack variability within the region.

Weather Forecast

Saturday Night: Scattered flurries, alpine temperature -10, moderate north wind.

Sunday: Sunny with cloudy periods, alpine temperature -7, light to moderate northwest wind.

Monday: Mix of sun and clouds, alpine temperature -6, moderate northwest wind.

Tuesday: Mix of sun and cloud, alpine temperature -5, light west wind.

Avalanche Summary

There have only been a handful of snowpack and weather observations from this area. Natural storm slab avalanches to size 1.5 were observed in the region on Friday. 

Snowpack Summary

20-40 cm of new snow falling over the past 48 hours has added to the 20-40 cm of storm snow from early in the week. All this new snow has covered a thick layer of faceted crystals, previously wind-affected surfaces, and/or surface hoar in sheltered areas around treeline and below.

A layer of surface hoar (feathery crystals) may be found in sheltered areas around treeline down 40-70 cm.

A variety of crusts from late October are buried deeper in the snowpack.

Problems

Storm Slabs

An icon showing Storm Slabs

25-45 cm of new snow accumulating over the past 48 hours has formed a reactive storm slab. In some areas this may be sitting on a layer of weak surface hoar.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 2

Persistent Slabs

An icon showing Persistent Slabs

A surface hoar/crust layer, down 40-90 cm may be found in some parts of the region. This layer is most likely found in sheltered openings.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood

Possible

Expected Size

1.5 - 2.5

Valid until: Dec 8th, 2019 5:00PM

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