Avalanche Forecast

Archived

Jan 27th, 2013–Jan 28th, 2013

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

Little Yoho.

Expect new snow and light wind on Tuesday to refresh the skiing quality, while at the same time contributing to wind slab development.

Weather Forecast

Up to 10cm of snow will fall across the forecast region Monday night through Tuesday night. These relatively light accumulations will not significantly increase the danger rating. The wind should remain light until early Wednesday morning.

Snowpack Summary

New wind slabs are sitting on top of older hard wind slabs in alpine lee areas. The middle of the snow pack is quite faceted. The Jan 6th surface hoar can still be found in isolated areas down approximately 30cm. This layer has potential to become active when it receives a considerable amount of load.

Avalanche Summary

No avalanches observed or reported today.

Confidence

Forecast snowfall amounts are uncertain on Tuesday

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.