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Avalanche Forecast

Archived

Dec 1st, 2013–Dec 2nd, 2013

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

Regions

Kananaskis.

A heavy snowfall warning is in affect for the Kananaskis Region.  Forecasts are calling for up to 20cm of snow but we are more likely to receive 10-15cm.  Avalanche danger will rise when this snow arrives.

Confidence

Fair - Forecast snowfall amounts are uncertain on Monday

Weather Forecast

A heavy snowfall warning is in affect for the Kananaskis region.  Snowfall amounts vary but we may see up to 20cm of snow in some areas but more likely amounts are 10-15cm. . 

Avalanche Summary

No new natural or skier triggerred avalanches were reported or observed.

Snowpack Summary

Little change over the past 24hrs...  Surface hoar up to 15mm can be found below 2200m and a thin MFC is being observed on steep solar aspects up to 2600m.  These two layers will become persistent weak layers once the new snow arrives.

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.

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.