Avalanche Forecast

Issued: Jan 27th, 2025 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

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Wind slab reactivity is expected to persist due to a buried crust beneath the most recent storm snow.

Summary

Confidence

High

Avalanche Summary

Reports of avalanche activity have significantly decreased since last week's storm cycle. However, on Sunday, a natural cornice drop triggered a large wind slab on a south-facing alpine slope. The slab failed on a buried crust, highlighting that while avalanches may be becoming less likely to trigger, the potential for large avalanches still exists.

Snowpack Summary

Surface hoar growth continues. Anticipate a thin surface crust on all south-facing or sun-exposed slopes. Elsewhere expect variable wind-affected surfaces.

In the upper snowpack, a crust with facets and/or surface hoar, buried in mid-January, can be found roughly 20 to 50 cm down from the surface.

The mid and lower snowpack contains several layers that we continue to monitor but do not currently pose a significant concern.

Weather Summary

Monday Night

Partly cloudy. 40 to 60 km/h west ridgetop wind. Treeline temperature -3 °C.

Tuesday

Cloud building with 0 to 2 cm of snow. 30 to 50 km/h west ridgetop wind. Treeline temperature -5 °C.

Wednesday

Mostly cloudy with up to 5 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Thursday

Cloudy with up to 10 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.

Problems

Wind Slabs

An icon showing Wind Slabs

A buried crust, with facets and/or surface hoar, is likely maintaining wind slab reactivity, despite much recent wind slab formation.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Jan 28th, 2025 4:00PM

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