Avalanche Forecast

Issued: Dec 11th, 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.

william lawson, Parks Canada

Jasper.

Though the deeper instabilities remain in the back of our minds, quality observations and significant weather swings with little avalanche activity have inspired confidence in the snowpack.

Summary

Weather Forecast

Cooling trend trend till 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 betweenÂ 2200 - 2900m.

Avalanche Summary

Highway 93 patrol. No avalanches reported.

Confidence

Due to the number and quality of field observations

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 12th, 2017 4:00PM