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Avalanche Forecast

Archived

Jan 30th, 2022–Jan 31st, 2022

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

Regions

Yukon.

Carefully assess wind effected terrain before committing to a feature. Rider triggerable wind slab can still be found near ridge crests and steep roll overs.

Confidence

High -

Weather Forecast

Sunday night: no new snow expected. Low of -22 at 1100m with light to moderate north winds.

Monday: clear skies with a high of -22 at 1100m. Light to moderate north wind.

Tuesday: light snow starting in the afternoon. High of -21 at 1100m. Winds will be moderate from the southwest.

Wednesday: up to 5cm of new snow with moderate to strong southwest winds. High of -14 at 1100m.

Avalanche Summary

No new reports of avalanches over the past few days.

On Wednesday our field team observed a size 2 natural wind slab avalanche on a southeast aspect at 1500m.

Snowpack Summary

Recent continuous strong southerly winds combined with new snow created wind slab on all exposed terrain on north aspects. South aspects are a mix of scoured and pressed surfaces. As the wind shifts to the north snow could begin to be redistributed on to south facing slopes.

In shallow snowpack areas a layer of loose facets sits at the bottom of the snowpack.

Terrain and Travel

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

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.