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Archived

Avalanche Forecast

Mar 4th, 2018–Mar 5th, 2018
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
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
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.

Good skiing can be found in most places.  Be aware of new wind slabs in isolated areas in the alpine. Ice climbers should be aware of loose dry avalanches in gullies.

Confidence

-

Weather Forecast

Monday is forecast to bring cloudy skies, sun and isolated flurries.  Alpine temperature will be -13c with westerly ridge winds of 25-35km/h.

Avalanche Summary

The following was observed:1.  One natural size 2.5 slab in the Commonwealth area2.  One size 2.5 slab in the Goat Range3.  Several loose dry avalanches up to size 2

Snowpack Summary

25-40cm of snow has fallen since Friday.  In the tree elevations, this storm snow is laying on top of a weaker snowpack.  Some soft slab development has occurred in the alpine but is isolated for the time being.  If the winds pick up and start to move the snow around, the wind slabs will develop and the hazard will increase in the alpine and open areas.

Avalanche Problems

Wind Slabs

New wind slabs in isolated areas.
Use caution in lee areas. Recent wind loading has created wind slabs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5

Loose Dry

Most notable in gullies.
Carry avalanche safety equipment on ice climbs in avalanche terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1 - 1.5

Deep Persistent Slabs

Large triggers are a concern. Cornices, and small avalanches are likely triggers.
Be aware of the potential for full depth avalanches due to deeply buried weak layers.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3.5