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Archived

Avalanche Forecast

Dec 6th, 2016–Dec 7th, 2016
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
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.

Two size 2.5 avalanches released on the november crust in the lake louise area today. One was skier trigger, no involvement.

Weather Forecast

Clear skies, light wind and very cold temperatures are forecasted for the next three days.

Snowpack Summary

20-30cm of recent storm snow from the weekend with only isolated areas of wind slab development, primarily at ridge crests in the alpine. The November crust is down 30-70cm with recent observations showing faceting above and below. The faceting process is in progress and will soon affect the entire snowpack due to current cold temperatures.

Avalanche Summary

Two size 2.5 avalanches reported today in the Lake Louise area, one was skier triggered. Both avalanches released on the november crust. Observer natural isolated avalanche activity to size1.5, thin slab releases out of steep alpine lees as the recent storm snow failed on old faceted surface.

Confidence

Avalanche Problems

Wind Slabs

Surprisingly very little wind slab formation. Areas to watch for are the immediate lee near ridge top.
Keep an eye out for reverse loading created by an upslope storm.Be careful with wind loaded pockets while approaching and climbing ice routes.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Loose Dry

Lots of loose storm snow available to release out of steep gully's and head walls. The slightest winds can trigger this problem.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 1