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Avalanche Forecast

Archived

Nov 25th, 2022–Nov 26th, 2022

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

Regions

Maligne.

New snow has finally arrived! Great skiing can likely be found, but the avalanche hazard has increased in many areas, and you still need to watch out for those early season hazards.

Confidence

Moderate

Avalanche Summary

No new avalanche activity was observed on Friday by a team in the icefields area, but visibility was very poor.

Snowpack Summary

10 to 25cm of storm snow now sits on a significant weak layer combination of facets, surface hoar, and various crusts. Strong south west winds have redistributed this snow into wind slabs on leeward and cross-loaded terrain features in open areas at tree line and in the alpine. The height of the snow at tree line ranges from 50 to 90cm.

Weather Summary

Saturday

Flurries.

Accumulation: 7 cm.

Alpine temperature: High -8 °C.

Mostly light ridge wind occasionally gusting to 40 km/h.

Freezing level at valley bottom.

Sunday

Flurries.

Accumulation: 6 cm.

Alpine temperature: Low -17 °C, High -8 °C.

Mostly light ridge wind occasionally gusting to 30 km/h.

Freezing level at valley bottom.

Monday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: Low -21 °C, High -17 °C.

Ridge wind light to 15 km/h.

Freezing level at valley bottom.

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.
  • Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.

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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.