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Avalanche Forecast

Archived

Nov 25th, 2024–Nov 26th, 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.

Assess steep lines for wind slab before committing.

Small pockets of wind slab may still be rider triggerable.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been observed. This MIN describes Avalanche activity that likely took place during the wind event on November 22nd.

Early season reports have been extremely limited. Please consider helping forecasters and your backcountry community by submitting your observations to the Mountain Information Network.

Snowpack Summary

The snow surface is highly variable. Soft faceted snow and surface hoar can be found in sheltered areas. In exposed terrain the surface is highly wind affected.

Check out this MIN from White Pass for more info.

The lower snowpack is generally strong, with the potential for various crusts at the base.

Snow depths vary greatly across the region with approximately 50 cm around treeline, and up to 100 cm in wind-loaded locations in the alpine.

Weather Summary

Monday Night

Mostly cloudy with 0 to 4 cm of snow expected. 15 to 40 km/h southwest ridgetop wind. Treeline temperature -12 °C

Tuesday

Cloudy with 1 to 4 cm of snow expected. 10 to 20 km/h north ridgetop wind. Treeline temperature -12 °C.

Wednesday

A mix of sun and cloud with 0 to 2 cm of snow expected. 15 to 30 km/h northeast ridgetop wind. Treeline temperature -15 °C

Thursday

A mix of sun and cloud with trace amounts of snow expected. 10 to 25 km/h northeast ridgetop wind. Treeline temperature -20°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.