Avalanche Forecast

Issued: Dec 3rd, 2011 7:15AM

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

Brent Kozachenko, Parks Canada

Waterton Lakes.

Summary

Problems

Wind Slabs

Strong westerly winds this week have created the potential for surface slabs over this heavier midpack. A small avalanche cycle of size 1.5 - 2 slabs ran from steep northeasterly alpine terrain.

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

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

No real change in the base of the snowpack. The crust and facet layer is now buried a bit deeper, and will probably require a large load to trigger an avalanche. Don't be this trigger, as full depth, dangerous releases are still possible.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

Valid until: Dec 6th, 2011 4:00PM