Avalanche Forecast

Issued: Dec 12th, 2017 4:00PM

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

deryl kelly, Parks Canada

Jasper.

The deeper instabilities are significant and should remain a part of your decision making. Quality observations, and significant weather swings with little avalanche activity has inspired confidence in the snowpack.

Summary

Weather Forecast

Slight cooling trend through to Thursday with freezing levels at valley bottom. No precipitation expected. Light South-South West winds in the alpine.

Snowpack Summary

There is a well settled snowpack in most locations. Widespread wind effected snow in the alpine with minimal ski penetration. The Halloween, Oct. 31 crust sits in the lower half snowpack with faceted crystals above and below; found between 2200 - 2900m.

Avalanche Summary

No avalanches observed or reported

Confidence

The weather pattern is stable

Problems

Deep Persistent Slabs

Heavy loads , like natural cornice releases might trigger this deep instability.

Pay attention to overhead hazards like cornices which could trigger the deep persistent slab.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely

Expected Size

2 - 3

Valid until: Dec 13th, 2017 4:00PM