Avalanche Forecast

Issued: Feb 12th, 2019 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Loose Dry and Deep Persistent Slabs.

Parks Canada jonas hoke, Parks Canada

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Good skiing can still be found in sheltered locations, but be cautious if traveling in shallow snowpack areas.

Summary

Weather Forecast

A weak ridge builds Wednesday, giving stable weather for the next couple days. Spin-off from a Low impacting the south coast will give cloud and flurries on Friday.Wednesday: Mostly sunny. Light winds. Alpine temps Low -20C, High -12C.A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Ongoing cold temps have weakened the structure of the upper snowpack. There is no longer a slab over the persistent weakness sitting down 30-40cm (surface hoar, crusts, and/or facets). The basal snowpack is structurally weak in shallow areas, consisting primarily of facets/depth hoar (cold temps continue to develop this deep persistent weakness).

Avalanche Summary

Several loose dry avalanches up to size 2 have been naturally triggered in the facetting snowpack in steep shallow areas over the past 2-3 days. On Feb 7th, a size 2 deep persistent slab was triggered by skiers in the Maligne area on a W aspect, 1950m, on a 30 degree slope (see MIN).

Confidence

Problems

Loose Dry

An icon showing Loose Dry
Cold temperatures continue to weaken the surface snow. Expect sluffing out of steep rocky terrain.
Be cautious with gully features.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 2

Deep Persistent Slabs

An icon showing Deep Persistent Slabs
This problem is still present and could be triggered from shallow snowpack areas. See MIN report.
Be cautious in shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1.5 - 3.5

Valid until: Feb 13th, 2019 4:00PM

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