Avalanche Forecast
Dec 6th, 2011–Dec 7th, 2011
Alpine
3:
Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2:
Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2:
Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3:
Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2:
Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2:
Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3:
Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2:
Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2:
Moderate
The avalanche danger rating below treeline will be moderate
Regions: Banff Yoho Kootenay.
Human Triggering of large avalanches in complex terrain remains likely. See the facebook link below for photos or visit: http://www.facebook.com/ParksMountainSafety?sk=photos
Weather Forecast
Snowpack Summary
Avalanche Summary
Confidence
Avalanche Problems
Deep Persistent Slabs
The weak base of depth hoar and facets is now less sensitive to human triggering , but with stiffer slab properties, the propagation potential will make for bigger full depth/full feature avalanches and increase the possibility of remote triggering.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 2 - 3
Wind Slabs
Strong winds have been moving snow from the west and north for the last few days and hard wind slabs have formed. It is likely that any slab will immediately step down to the weak base. Choose moderate slope angles & low consequence terrain
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 2 - 3