Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Dec 22nd, 2025–Dec 23rd, 2025

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

Regions

Northwest Inland, Kitimat, Nass, Rupert, Seven Sisters, Shames, Howson.

Wind slabs are the primary danger.

Conditions vary across the region, so verify local conditions and watch for signs of instability before entering steep terrain.

Confidence

Moderate

  • Uncertainty is due to extremely variable snowpack conditions reported through the region.

Avalanche Summary

Over the weekend, small 20 to 40 cm thick human-triggered avalanches were reported around Shames and Anderson. At Anderson, failures reportedly occurred on shallowly buried surface hoar between 1000 to 1200 m.

Looking ahead, we are confident about new wind slabs formed by outflow winds, but it’s less clear whether the other shallow weaknesses observed over the weekend will persist.

Snowpack Summary

Recent cold, windy weather is actively reshaping the snow surface, especially in open terrain exposed to northeast winds.

Some localized instability was reported near Anderson over the weekend, possibly linked to weak surface hoar about 20 cm deep. This was not observed in the Shames area.

More than 100 cm of heavy snow fell last week, which has likely strengthened the snowpack and reduced the chance of triggering older layers from December (which include buried surface hoar and crusts).

Snowpack depths exceed 350 cm at treeline elevations.

Weather Summary

Monday Night
Mostly cloudy. 2 to 4 cm of snow. 30 km/h southeast ridgetop wind. Treeline temperature -17 °C.

Tuesday
Mix of sun and cloud. 0 to 1 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -13 °C.

Wednesday
Mix of sun and clouds. 0 to 1 cm of snow. 40 km/h east ridgetop wind. Treeline temperature -15 °C.

Thursday
Mostly sunny. 10 km/h southwest ridgetop wind. Treeline temperature -14 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind-affected terrain.
  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Investigate the bond of the recent snow before committing to your line.

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.