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Avalanche Forecast

Archived

Dec 21st, 2025–Dec 22nd, 2025

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

Regions

Vancouver Island, East Island, North Island, South Island, West Island.

If you see more than 30 cm of new snow, treat the danger as HIGH.
Gather information as you ascend, watching closely how the new snow is bonding to the layers underneath.

Confidence

Low

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

There have been no recent backcountry reports; however, natural avalanche activity is likely ongoing during periods of rapid loading from heavy snow and/or wind transport.

Snowpack Summary

Snow continues to accumulate throughout the region, with many areas seeing the snowpack more than double in depth since the beginning of last week. Up to 100 cm of recent snow has fallen in areas, with deeper deposits in wind-loaded terrain at treeline and above.

Below the recent snow lies a melt-freeze crust over previously rain-saturated snow.

Early-season hazards remain a concern, now concealed beneath the new snow, and will continue to be until the snowpack settles into a more supportive surface or additional snowfall provides deeper coverage.

Weather Summary

Sunday Night
Mostly cloudy. 5 to 10 cm of snow, possibly 20 to 30 near Strathcona Park. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 700 m.

Monday
Cloudy. 25 to 35 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 800 m.

Tuesday
Mostly cloudy. 15 to 20 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 700 m.

Wednesday
Mix of sun and clouds. 3 to 10 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.
  • Be especially cautious as you transition into wind-affected terrain.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.