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Archived

Avalanche Forecast

Feb 4th, 2016–Feb 5th, 2016
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Kananaskis.

A consistent weather pattern is keeping the danger levels steady. Despite this, take some time before stepping out into larger or more committing features.

Confidence

High

Weather Forecast

Tonight: Mainly cloudy with isolated flurries. Low -11. West winds 40k/hr & gusting to 65.Tomorrow: Mainly cloudy with isolated flurries. High -6. West winds 60km/hr.

Avalanche Summary

A couple of sz1 windslabs were noted today. They were below cliffs and are thought to be in areas where spindrift and wind have built thicker, denser windslabs.

Snowpack Summary

Below 1900m, the temperature crust from last week is now buried by 8cm of snow. This crust is unlikely to pose any problems down the road. The snowpack has regained some of it strength down low and is now more supportive in many areas. At treeline, the windslabs start to become evident in open areas or areas exposed to wind. Windslabs are down 20cm and only an issue in isolated areas. The Jan 6th layer is down 50-70cm at upper treeline and is hanging in there in terms of strength with the other layers. The alpine is either weak and facetted or a series of laminated windslabs. The exposure to wind seems to be the deciding factor.

Avalanche Problems

Wind Slabs

These are manageable by choosing supported terrain and avoiding steep and/or convex rolls. They are improving, but their spotty nature has us thinking about them still.
Avoid steep lee and cross-loaded features>

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Persistent Slabs

These are also improving, but their depth is still in the triggering range. In shallow areas, this problem is more likely to be a serious issue.
Avoid convexities or areas with a thin or variable snowpack.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 5