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Avalanche Forecast

Archived

Nov 26th, 2024–Nov 27th, 2024

Alpine
Natural avalanches unlikely.
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, Tutshi, Wheaton, White Pass East, White Pass West.

Evaluate steep lines carefully for wind slabs before committing.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but small wind slabs from last week’s outflow winds remain visible.

Early season observations are very limited. Share your observations with forecasters and the backcountry community through the Mountain Information Network.

Snowpack Summary

A dusting of snow will cover a mix of old surfaces, including hard wind-affected snow, soft faceted snow, and surface hoar. The snowpack is generally strong, with some crusts near the base.

Snow depths vary significantly across the region, with about 50 cm at treeline and up to 100 cm in alpine areas.

Weather Summary

Tuesday Night

Cloudy with 1 to 2 cm of snow. 15 km/h northeast ridgetop wind. Treeline temperature -12 °C.

Wednesday

Cloudy with 1 to 2 cm of snow in the morning then clearing in the afternoon. 20 km/h northeast ridgetop wind. Treeline temperature -15 °C

Thursday

Mix of sun and cloud. 30 km/h northeast ridgetop wind. Treeline temperature -20 °C.

Friday

Mostly sunny. 30 km/h northeast ridgetop wind. Treeline temperature -22 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Watch for areas of hard wind slab on alpine features.

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.