Avalanche Forecast

Issued: Nov 29th, 2018 4:00PM

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

snow safety, Parks Canada

Banff Yoho Kootenay.

Summary

Weather Forecast

Slowly cooling temps and maybe some outflow on Saturday. Colder still on Saturday (teens), but not viciously so.

Snowpack Summary

The October 26 crust is found ~10-30 cm above the ground. A generally facetted snowpack averages 40-85 cm at 2200m across the region.

Avalanche Summary

Puzzle Peak had a large rockfall event. Glide-cracks on the top indicate the possibility of further rockfall. Outside our expertise, but maybe avoid the toe for a while.

Confidence

Problems

Deep Persistent Slabs

Within the past week, there have been occasional reports of skier remote and explosive triggered slabs on the Oct 26 crust and facet layer. Avoid steep terrain where a stiffer, more cohesive slab exists over the weak snow at the base of the snowpack.

Whumpfing is direct evidence of a buried instability.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Nov 30th, 2018 4:00PM