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Archived

Avalanche Forecast

Jan 1st, 2013–Jan 2nd, 2013
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: Kananaskis.

Lots of alpine terrain being utilized that ordinarily does not see traffic this early in the season - there is still potential for large avalanches in isolated areas.

Confidence

Good

Weather Forecast

A ridge of High pressure will keep skies mainly clear with no precip in the forecast for the next several days.

Avalanche Summary

A few small sluffs to Size 1 from south and east aspects.  Size 1.5 SSL in narrow steep gully below treeline, 2100m, E aspect, 40 deg slope.  Trigger uncertain - possible natural , possible human triggered as tracks could be seen in the vicinity.

Snowpack Summary

Surface hoar growth below treeline continues due to cold clear nights.  More facetting of upper layers as well.  Midpack strength continues to hang in there although the strong temperature gradient is weakening the midpack.

Avalanche Problems

Wind Slabs

Wind slabs of varying thickness are present in the Alpine on all aspects, especially along ridgelines. Buried wind slabs are also present on N and E aspects down 25 to 55cm in the snowpack.
Avoid lee and cross-loaded terrain along ridge tops.>

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 4

Deep Persistent Slabs

This layer is still a concern despite the lack of activity. In most areas at and above treeline we have a generally "deep" snowpack, however shallow areas will be found in the alpine. Treat these variable areas with caution.
Be aware of thin areas that may propagate to deeper instabilites.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 3 - 6