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Archived

Avalanche Forecast

Feb 10th, 2014–Feb 11th, 2014
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
3: Considerable
The avalanche danger rating at treeline will be considerable
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Kananaskis.

Approaching storms will bring snow and strong winds to the region. As a result danger levels will rise for the first time in weeks. It is time to choose more conservative terrain.

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

Up to 5cm of new snow is expected overnight. Tuesday will be windy with occasional light flurries and temperatures near -11. Wednesday could bring as much as 25cm of new snow. Strong west winds are expected to accompany this storm.

Avalanche Summary

Nothing new.

Snowpack Summary

Strong SW winds today led to some redistribution of snow in high Alpine regions. Thin wind slabs are possible in immediate lee features on North through East aspects in the Alpine. Otherwise surface conditions include  surface hoar, facets, wind slab and sun crust. The mid pack remains supportive in most areas, but the basal weakness remains.

Avalanche Problems

Deep Persistent Slabs

Stiff wind slabs still exist throughout the forecast area and these sit on the weak basal facets. Though difficult to trigger, this weakness could produce large avalanches. Thin snowpack areas are a potential trigger point.
Carefully evaluate and use caution around thin snowpack areas.>Be aware of the potential for wide propagations.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4

Wind Slabs

Thin wind slabs are possible in high Alpine areas immediately below ridge crests on N and E aspects. While only small avalanches are possible, these could be big enough to push a person over a cliff or into a terrain trap.
Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.>Avoid traveling on ledges and cliffs where small avalanches may have severe consequences.>

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2