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Avalanche Forecast

Archived

Jan 27th, 2013–Jan 28th, 2013

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

Regions

Jasper.

Weather Forecast

Forecasted snow has been reduced to only light snow flurries in between the sunny periods through to Wednesday.  Winds will be moderate from the West / Northwest in the alpine and temperatures should remain seasonal in the -5 to -15 C range

Snowpack Summary

In the alpine and down to treeline, the widespread hard slabs provide a strong bridge over any underlying weakness. Some solar affect has occurred in the high alpine on Westerly slopes. Below treeline, the snowpack is facetted throughout but no slab overlies this weakness.

Avalanche Summary

One size 2.5 slab avalanche was observed on Saturday, originating in a cross loaded alpine gully on a Southwesterly aspect at approximately 2800 meters indicating that the sun is gaining strength in the afternoons.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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.