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Avalanche Forecast

Archived

Mar 23rd, 2020–Mar 25th, 2020

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

Regions

Yukon.

Recent new snow fell with winds blowing from a variety of directions.

Confidence

Moderate -

Weather Forecast

Monday Night: Mostly clear. Moderate to strong north and northeast wind. Alpine high temperature around -8.

Tuesday: Mix of sun and cloud. Moderate to strong north wind. Alpine high temperature around -3.

Wednesday: Cloudy with clear periods. Moderate west wind. Alpine high temperature around -5.

Thursday: Cloudy with isolated flurries. Light west wind. Alpine high temperature around -5.

Avalanche Summary

No new avalanches were reported over the past couple of days, 

Looking forward, avalanche problems will likely remain limited to small wind slabs in the lee of exposed features.

Snowpack Summary

About 10 cm of new snow fell toward the end of the weekend. This has been redistributed by moderate southwest winds initially, switching to north and northeast. As a result, small new wind slabs have developed on a variety of aspects. This new snow likely sits on a variety hard surfaces which may include old wind affected snow or melt freeze crust left as a remnant of last week's warm weather. The lower snowpack is well settled with little concern at this time. 

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Sheltered slopes at lower elevations will offer the best riding.

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.