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Avalanche Forecast

Archived

Feb 16th, 2022–Feb 17th, 2022

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 possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Glacier.

Strong winds and new snow will elevate the avalanche hazard as the day progresses.

Melt-freeze crusts and old hard wind slabs may still make for challenging skiing and riding.

Weather Forecast

~10cm of new snow, moderate to strong winds, and mild temperatures are forecasted for Thursday. Continued light snow on Friday, then we should start to see more snow accumulating over the weekend. Saturday and Sunday are both forecasted to get 15cms of new snow as a mild low-pressure system comes from the NW.

Snowpack Summary

Wind slabs will develop Thursday morning with Strong SW winds and ~10cm of new snow. The new snow and strong winds will bury a new layer of SH in sheltered terrain, old hard wind slabs in the Alpine, and crusts on all aspects BTL and solar slopes into the Alpine. The Jan 29 SH layer, buried 50-80cm, seems to be rounding.

Avalanche Summary

No new avalanches have been observed in the highway corridor, or reported from the Backcountry.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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.