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Archived

Avalanche Forecast

Jan 14th, 2013–Jan 15th, 2013
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
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.

Chinook conditions the next couple of days will result in considerable redistribution of snow and contribute to slab development.  If  wind values reach forecasted levels we may see an increase to CONSIDERABLE at treeline so watch for wind effects.

Confidence

Good

Weather Forecast

A strong chinook flow is expected by Tuesday/Wednesday  with winds westerly at 65-75km/h gusting to 90-100km/h at times.  Temperatures will rise well above seasonal levels and no new precipitation is expected.

Avalanche Summary

Limited minor sluffing in steep rocky terrain.  One Size 1 soft slab release triggered by goats on an E aspect at treeline in steep rocky terrain.  Ran 75m by 10m wide.  Approx depth of 20cm.  No tracks or other sign indicating goats were caught!

Snowpack Summary

Storm snow settling slowly.  Strong-extreme winds forecast for the day have not manifested themselves in the core of the forecast area but were prevalent only a few km away at the north end of the  Spray valley.

Avalanche Problems

Storm Slabs

Slabs 30-40cm thick are being encountered on north and east aspects at treeline and above. Many slabs that failed in the latest cycle failed on a surface hoar or facet layer down 30-50cm.  Avoid unsupported and convex terrain features.
Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.>Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.>Avoid unsupported slopes.>

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 4