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Avalanche Forecast

Archived

Feb 1st, 2017–Feb 2nd, 2017

Alpine
Natural avalanches possible, human triggered probable.
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

Glacier.

Fresh windslab and cornices are fragile and still need time to gain strength.

Weather Forecast

Today will be sunny with cloudy periods with no new snow. Winds will be light from the East and the daytime high is forecast to get up to -15*C. Expect much colder temps in the shade(north facing terrain or valley bottoms) or anywhere the wind is blowing. Our local weather pattern will change in the next few days with milder temps and some snowfall

Snowpack Summary

Previous strong Southerly winds have caused extensive wind effect in the alpine. Conditions are highly variable from wind scoured, wind slabs, hard slabs and deep wind drifts. Surface hoar to size 3 was found in profiles yesterday underneath the wind effected snow. At treeline and in very sheltered alpine locations the snow surface is undisturbed.

Avalanche Summary

There was a natural avalanche cycle within the last 72 hrs associated with the strong winds and 10cm of new snow. Numerous avalanches from size 2 -3 were observed to run into their runouts. In the backcountry there was reports of both natural and human triggered windslabs. A cornice triggered avalanche was also observed yesterday below Avalanche pk

Confidence

Wind effect is extremely variable

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.