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Archived

Avalanche Forecast

Jan 16th, 2015–Jan 17th, 2015
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
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
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Kananaskis.

A system is expected to cross the region this weekend.  This will bury the surface hoar currently on the snow surface which will likely be a problem for some time.

Confidence

Good

Weather Forecast

Winds are forecast to ease off slightly on Sunday before the remnant if a system cross the forecacst region beginning Saturday afternoon/evening.  Up to 15cm of snow may fall and this will then officially bury the surface hoar layer.  Temperatures are forecast to cool slightly.

Avalanche Summary

No new Natural avalanche activity.

Snowpack Summary

A trace amount of new snow fell overnight but not enough to really bury the surface hoar that has been growing on all aspects up to 2400m. The Dec 13th interface is down 30-40cm and continues to produce moderate sheers on a layer of facets over this crust. This crust, the Dec 13, is only being found up to 2250m-ish. Below this the mid pack is generally well settled with the 1106cr down 1m. Most alpine terrain is wind hammerred and even some areas down into treeline saw some wind affect on Friday.

Avalanche Problems

Persistent Slabs

Treeline areas is where one can expect to enouter this problem.
Avoid unsupported slopes.>Avoid cross loaded features.>

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

Watch for thin weak areas where it may be possible to trigger this weakness
Avoid convexities or areas with a thin or variable snowpack.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 3 - 5