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Avalanche Forecast

Archived

Dec 18th, 2025–Dec 19th, 2025

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

Regions

North Rockies, McBride, East Kakwa, Kakwa, McGregor, Pine Pass, Renshaw, Robson, Tumbler.

New snow and wind continue to build wind slabs at upper elevations.

Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.

Confidence

Avalanche Summary

As we transition into a cooler, stormy period we expect to see wind slab avalanches remain active.

These avalanches will be more reactive where they are forming over the most recent crust.

Snowpack Summary

Accumulated storm snow is roughly 20 to 40 cm and sits on a melt-freeze crust that extends up to 2000 m.

The surface snow has been heavily impacted by wind in open terrain features.

A layer of surface hoar, facets and/or a crust exists around 100 cm deep. This layer appears to be improving but may still be present in high alpine terrain. In thin snowpack areas, faceted grains or depth hoar may exist at the base of the snowpack.

Weather Summary

Thursday Night
Mostly cloudy. 10 to 15 cm of snow, highest amounts NE of Prince George. 20 km/h south ridgetop wind. Treeline temperature -17 °C.

Friday
Mix of sun and clouds. 1 to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -20 °C.

Saturday
Mix of sun and clouds. 2 to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -16 °C.

Sunday
Mostly cloudy. 3 to 5 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -15 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.

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.