Avalanche Forecast

Issued: Feb 18th, 2015 4:00PM

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

aaron beardmore, Parks Canada

Banff Yoho Kootenay.

The basal weakness persists. We will be stuck with Considerable danger in the alpine for some time yet.

Summary

Weather Forecast

The trend is for light precip and cooling temperatures over the next few days. Wind will shift to the North on Thursday evening. It could get significantly colder by the weekend. These weather inputs will have little effect on the current danger ratings.

Snowpack Summary

Some wind effect in open areas above tree line. Temperature crust present below 1800m. 60-70cm of well settled snow from recent storms and warm temperatures sits over weak facets and depth hoar at the bottom of the snowpack.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Problems

Deep Persistent Slabs

The base of the snowpack remains weak due to the presence of basal depth hoar and facets. Natural activity is tapering off, however human triggering is still likely on this layer.

Use conservative route selection, choose moderate angled and supported terrain with low consequence.Be aware of thin areas that may propogate to deeper instabilites.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Valid until: Feb 19th, 2015 4:00PM