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Avalanche Forecast

Archived

Jan 12th, 2025–Jan 13th, 2025

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Crawford, Moyie, St. Mary.

Conditions are generally safe, but small wind slabs may be possible on steep slopes.

Confidence

High

Avalanche Summary

Avalanche activity has been minimal this week, with only a few small wind slabs reported in steep alpine terrain over the weekend.

Snowpack Summary

Westerly winds have impacted the snowpack in many open areas, making soft surfaces scarce. About 5 to 15 cm of recent snow sits on variable interfaces, including surface hoar in sheltered areas and sun crusts on solar aspects. These interfaces may be deeper on wind-loaded slopes.

A previous weak layer from early December (surface hoar or facet/crust combo) is found 50 to 120 cm deep, but snowpack tests and lack of recent activity suggest it's no longer a concern.

The lower snowpack is generally strong and bonded.

Weather Summary

Sunday Night

Partly cloudy. 20 km/h northwest ridgetop wind. Treeline temperature -8 °C.

Monday

Mostly sunny. 30 km/h northwest ridgetop wind. Treeline temperature -6 °C.

Tuesday

Sunny. 15 km/h northwest ridgetop wind. Treeline temperature -5 °C.

Wednesday

Sunny. 15 km/h west ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • This is a good time for exploring terrain.
  • Carefully evaluate steep lines for wind slabs.

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.