Avalanche Forecast

Archived

Feb 7th, 2013–Feb 8th, 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

Little Yoho.

Weather Forecast

No snow in the forecast. A subtropical ridge of high pressure pushes in to the BC coast for Saturday. This will bring a dry northerly flow over the Rockies. Freezing levels will remain relatively low due to the northerly flow, however solar warming may become an issue on sunny aspects with the clearing skies.

Snowpack Summary

A light dusting of low density new snow lies overtop of wind slab (in alpine lee terrain) or previously facetted surfaces. East of the divide the mid-pack at treeline and below is well facetted and barely supportive to skiers. The early Jan. surface hoar can still be found down ~40 cm in some locations, but is proving unreactive to skier triggering

Avalanche Summary

No recent avalanches reported or observed

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.