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Avalanche Forecast

Archived

Apr 26th, 2013–Apr 27th, 2013

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Kananaskis.

Bulletins will become less regular as the season winds down. Stability changes rapidly throughout the day at this time of year.  The quality of the freeze overnight and the temperature are two important factors to consider.  Early stars are key!!!

Confidence

Good

Weather Forecast

Temps are warmmming up these days as we transition into spring.  Convective flurries may give us isolated snowfalls with up to 10cm of snow but the main element to be aware of at this time of year is how hot is it, and what aspect are you on and whats going on in the sun wayyyy overhead when your in the cool valley.

Avalanche Summary

Numerous Loose wet slides up to sz 1.5 on all aspects.  A few isolated slabs avalanches up to sz 2.5 on N aspects in Alpine terrain. 

Snowpack Summary

Isoltermal snow in the lower elevations and crusts on all aspects but Polar aspects well into the Alpine. 

Problems

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.