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Avalanche Forecast

Archived

Dec 27th, 2013–Dec 28th, 2013

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

Regions

Kananaskis.

A cold front is expected tomorrow with some new snow and cooler temps. Amounts are uncertain right now, windloading may become a problem at the higher elevations. Watch for changing conditions.

Confidence

Fair - Intensity of incoming weather systems is uncertain

Weather Forecast

A cold front is approaching from the NW. Winds are expected to decrease in speed and change to a more NW-N direction. 7cm of snow is forecasted, but amounts could vary. Temps are going to fall to more seasonable values.

Avalanche Summary

Nothing to mention here.

Snowpack Summary

The snow continues to be blown away. At this point most alpine ridges are blown clean with lee areas blown in with windslabs of varying density (elevation dependant). In sheltered areas (TL & below) the HS is shrinking and is still on the weak side. HS@burstall pass 75 and HS @ Burstall parking is 58.

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.