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Archived

Avalanche Forecast

Dec 12th, 2016–Dec 13th, 2016
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Climbers be aware of the potential for loose dry avalanches from steep, rocky terrain and gully features.

Weather Forecast

Alpine low of -25 overnight with a daytime high of -18. Thin low level cloud to persist for most of the day with clear skies above. Moderate Northwest winds until Wednesday evening. Slight warming trend toward the end of the week, with mainly clear skies.

Snowpack Summary

Ongoing moderate Northwest winds redistributing cold snow, soft slab formation possible on lee features. Arctic cold temps have penetrated the shallow snowpack and are promoting facetting. Nov12 crust down 45 to 90cm and found between 2100-2600m on all aspects.

Avalanche Summary

Numerous loose dry avalanches on Westerly aspects up to Size 2 in Alpine terrain observed along the Icefields Parkway today. Recent shift of winds to the Northwest seem to have been the trigger for these events.

Confidence

Avalanche Problems

Loose Dry

Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
Avoid travelling on ledges and cliffs where sluffing may have severe consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

The Nov crust is down 40-90cm and is beginning to facet out, lose strength and cohesion. There has been recent activity on this layer and requires respect.
Carefully evaluate and use caution around thin snowpack areas.The stable avalanche conditions still require careful decision making.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3