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Avalanche Forecast

Archived

Apr 11th, 2014–Apr 12th, 2014

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

Regions

Kananaskis.

Its spring time now so pay close attention to temps and solar radiation as you travel.  When the sun comes out, be aware that stability will quickly deteriorate.  How quickly this happens depends also on the quality of overnight freeze.

Confidence

Good

Weather Forecast

A mix of sun and cloud for Saturday with only light convective flurries throughout the day.  Freezing levels are forecast to remain at the valley floor.

Avalanche Summary

No new natural avalanche activity.

Snowpack Summary

Very little change over the past few days.  A few cm of snow is falling with convective flurries but not enough to make a difference in terms of ski quality.  Melt freeze crusts can be found on all aspects up to 2200m and on all aspects except true polar up to 3000m. 

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.

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.