Avalanche Forecast

Issued: Dec 28th, 2016 4:26PM

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

Avalanche Canada jfloyer, Avalanche Canada

The wind has a lot of new snow to whip up into fresh wind slabs. I recommend caution in wind affected areas.

Summary

Confidence

Moderate - Wind speed and direction is uncertain

Weather Forecast

THURSDAY: Mostly dry with some sunny breaks. Ridgetop winds southwest 40-60 km/h. Treeline temperatures rising to around -4C after a cold morning. FRIDAY: Mostly dry and clear. Winds becoming light westerly. Temperatures around -4C.SATURDAY: Flurries in the afternoon. Moderate southwesterly winds. Temperatures around -8C.

Avalanche Summary

On Tuesday, new storm snow produced numerous size 1.5-2.5 avalanches, including natural and skier-triggered loose dry and storm slab avalanches on north and east aspects. On Wednesday, explosive control continued to release storm slabs, but they remained relatively small (up to size 2).

Snowpack Summary

Quite a lot (up to 50 cm) of recent low density snow has fallen, which is now available to be redistributed by mostly moderate southwesterly winds. The new snow sits above a variety of surfaces including old hard wind slabs and surface hoar. The cold weather in early December left several layers of weak surface hoar and facets which are now buried 50-80 cm deep. These layers have been inactive for the past week, as it appears the lower snowpack is well-settled. A thick crust rain crust from mid-November is near the bottom of the snowpack and remains well bonded to the surrounding snow.

Problems

Wind Slabs

An icon showing Wind Slabs
Expect fresh wind slabs to form at higher elevations as winds pick up and redistribute loose snow.
Be cautious as you transition into wind affected terrain.Use ridges or ribs to avoid pockets of wind loaded snow.

Aspects: North, North East, East, South East, South, South West.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Dec 29th, 2016 2:00PM

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