Avalanche Forecast

Archived

Mar 16th, 2015–Mar 17th, 2015

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.

Sunday's upslope storm didn't reach this region. A little new snow on Saturday helped with ski quality, but it came with strong W winds in the alpine.

Weather Forecast

We are under the influence of a ridge of high pressure until Friday. Tuesday will be a great day to be in the mountains with light winds, sunny skies and a good freeze. Wednesday and Thursday will have weaker freezes and potentially cloudier skies, but light winds and no precip.

Snowpack Summary

Strong Southwesterly winds have stripped windward slopes and deposited the 5-10 cm's of new snow onto leeward aspects (north through easterly slopes). Wind slabs up to 30cm's have been observed at TL and Alpine locations. The mid pack and base of the snowpack is well settled and well bonded overall. Surface crusts exist below 1900m

Avalanche Summary

No natural avalanches have been reported recently.

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.