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Avalanche Forecast

Archived

Nov 22nd, 2021–Nov 23rd, 2021

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

Regions

Glacier.

Wind slabs have likely formed in the alpine, evaluate steep terrain and convex areas with caution.

Travel below ~1700m is teeth chattering and rugged due to a breakable crust and refrozen chunks of snow, take your time moving through this terrain.

Weather Forecast

5cm of snow Monday night and isolated flurries over the day on Tuesday with mainly cloudy skies. Winds will drop to 10-30km/hr from the South West as the freezing level rises to 1300m. Temps in the alpine could reach a high of -6.

Later in the week a moist system moves inland and could deliver another 25-40cm by the weekend.

Snowpack Summary

Up to 35cm of snow has fallen over the last few days and has been redistributed by 25-40km/hr Southerly winds. At tree line the new snow covers the widespread November 15th crust. Below ~1700m a breakable crust and refrozen snow/ice chunks make for poor travel. The November 5th crust is decomposing near the bottom 1/3rd of the snowpack.

Avalanche Summary

Several natural slab avalanches, size 1.5-2.0, out of steep, wind loaded terrain today, typically stopping halfway down the track or at the top of the fan. No new reports from backcountry users at the time of this being published.

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.