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Avalanche Forecast

Archived

Feb 26th, 2014–Feb 27th, 2014

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Kananaskis.

It is important to be disciplined with terrain choices. Many slopes look quite attractive with the recent snow, but the Feb 10th layer still needs time to heal. Human-triggering remains likely.

Confidence

Good

Weather Forecast

Thursday will bring cloudy conditions with a trace amount of snow possible. Winds will be moderate from the NW and temperatures should reach -8 in the alpine. Beginning Friday temperatures will cool significantly with the thermomotor dipping to -38 on Saturday night! Cloudy conditions should prevail through the weekend with a chance of very light flurries.

Avalanche Summary

Nothing new observed or reported but observations were very limited today.

Snowpack Summary

Moist snow on steep solar aspects. Surface facetting in protected areas. Snowpack settling. Wind effect Alpine and Treeline areas. Between 40 and 70cm overlies the Feb 10th layer. Moderate shears are found at this interface.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.