Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Dec 30th, 2011–Dec 31st, 2011
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
3: Considerable
The avalanche danger rating at treeline will be considerable
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Avalanche control planned for Mt. Bosworth, Stephen and Field tomorrow mid-day. Please no recreation of any sort on these peaks tomorrow. LP

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Avalanche Problems

Wind Slabs

Since Dec 24, storm snow amounts total 40 cm (Lake Louise), 55 (Sunshine) , 60 (Bow Summit). SW winds have created touchy slabs 60-150 cm thick. Natural avalanches continue with on-going wind loading. Winds will taper and skies will clear tomorrow.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 3

Deep Persistent Slabs

Large windslab releases continue to step down into the basal weak facets creating large avalanches. Size 3 Natural over Sacre Blue climb on Rundle today, photos on the mountain conditions report.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 2 - 3

Storm Slabs

The December 10 surface hoar is down approximately 60-70 cm. The distribution of this layer is spotty but mostly on the west side of the Divide (Mt. Whymper, Takakaw Falls). Avoid steep walled gully features, or steeper open slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2