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Archived

Avalanche Forecast

Mar 30th, 2012–Apr 2nd, 2012
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Waterton Lakes.

Warm temperatures and rain have created poor conditions and unstable snow below 1900m. Cooler Sunday? Up high windslabs and fragile cornices are developing. There are many sources that could create the large load necessary to trigger a big wet slide.

Avalanche Problems

Wind Slabs

New soft slabs are forming in open lee areas. Avoid large or planar slopes where these slabs may be more continuous. Feel for harder slabs now hidden by recent storm snow.

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

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Loose Wet

Continued warm temps have created moist and rain soaked snow below 1900m. Crappy skiing! Stay in low angle and supported terrain as you travel through this weak wet snow. Remember small slides could be the large load needed to trigger deeper slabs.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Persistent Slabs

Warming events this month have created crusts below 1900m on shaded aspects and to ridgelines on solar aspects. Slabs may still be triggered on these deeper layers with large loads as water percolates through the snowpack and weakens upper crusts.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3