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Avalanche Forecast

Archived

Nov 27th, 2022–Nov 28th, 2022

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Shifting winds may have formed wind slabs on a variety of aspects at upper elevations.

Avoid steep, rocky, and wind affected areas where triggering slabs are more likely.

Confidence

Low

Avalanche Summary

No avalanche activity has been reported. Please consider sharing any observations you may have via the Mountain Information Network to help us and fellow recreationists.

Snowpack Summary

A thin snowpack exists in most areas, with 50-75 cm found at White Pass. Upwards of 100 cm may be found in wind-loaded areas.

Wind slabs are most likely on north and east-facing slopes. However, the wind direction has shifted to northeasterly on Sunday and may form fresh wind slabs on south and west aspects.

The thin early-season coverage means many other hazards exist, such as exposed and thinly buried rocks, buried logs, open creeks, and weak lake ice.

Weather Summary

Sunday Night

Mostly cloudy with isolated flurries; 0-3 cm / Light northeast ridgetop winds / Low temperature at treeline -19 C

Monday

Mix of sun and cloud with isolated flurries; 0-3 cm / Light northeast ridgetop winds / High temperature at treeline -17 C

Tuesday

Mix of sun and cloud / Strong northeast ridgetop winds / High temperature at treeline -22 C

Wednesday

Sunny / Strong north ridgetop winds / High temperature at treeline -22 C

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

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.