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Avalanche Forecast

Archived

Feb 26th, 2013–Feb 27th, 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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Weather Forecast

Scattered flurries (with only light accumulations) and moderate westerly winds will persist over the next few days. Freezing levels may bump up to 1800m on Friday.

Snowpack Summary

West of the divide the mid-pack is generally well settled. The early January surface hoar exists down ~50 cm in some areas but is decomposing and unreactive to slope tests and compression tests. East of the divide the mid-pack is mostly faceted. Throughout the region some fresh wind slabs up to 25 cm thick exist in lee alpine features.

Avalanche Summary

No slab avalanches observed. Loose snow avalanches up to Class 1.5 were observed out of steep terrain.

Confidence

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.