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

Avalanche Forecast

Dec 11th, 2012–Dec 12th, 2012
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Banff Yoho Kootenay.

Light winds, no snow, and slightly lower temperatures will not change the hazard rating over the next day or two.

Weather Forecast

Temperatures are forecasted to lower slightly over the next few days, but remain at or slightly above seasonal norms. Winds will be light from the W/NW. Snowfall amounts may be trace along the Divide, with patchy cloud further to the east.

Snowpack Summary

Wind slabs of varying thickness have been developing due to moderate / strong winds. With the moderate temperatures, these wind slabs are settling over top of a well settled mid pack and the Nov 6 rain crust.

Avalanche Summary

No new observations reported.

Confidence

Avalanche Problems

Wind Slabs

Strong winds from the NW have created wind slabs in the alpine. These wind slabs vary in thickness between 15 and 30cm. With the continued mild temperatures, they have been bonding reasonably well and are more stubborn to trigger.
Be cautious as you transition into wind affected terrain.Be aware of the potential for wide propagations due to the presence of hard windslabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

The Nov 6th crust should still be in the back of your mind. Recent avalanches on this layer combined with uncertain means of triggering make venturing out onto big open slopes a committing choice.
Be aware of the potential for full depth avalanches due to deeply buried weak layers.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3