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Avalanche Forecast

Archived

Dec 24th, 2025–Dec 27th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Waterton Lakes, Waterton.

The snowpack depths at all elevations have doubled in the last week, accompanied by strong winds. Snow has been redistributed, use caution in wind loaded terrain.

Below treeline is still thin in places, with early season hazards like stumps, logs, and rocks.

Confidence

Low

  • Uncertainty is due to limitations in the field data.

Avalanche Summary

No new avalanches observed. However, observations are limited.

Snowpack Summary

Up to 25 cm of new snow accompanied by moderate to strong southwesterly winds is expected by Saturday evening. This falls over 80 cm of rapidly settling snow from recent storms. Under the storm snow, sits a mid December crust. The lowest snowpack layers are generally a series of melt forms to the ground, with the exception of above 1700m where the mid-November crust/facet layer can still be found in select areas.

Weather Summary

Thurs

Scattered flurries. Up to 5 cm of snow. Light to strong SW winds. Alpine H -2°C. Freezing level 1700m.

Fri

Flurries. Up to 9 cm of snow. Light to strong SW winds. Alpine L -6°C and H -3°C. Freezing level 1600m.

Sat

Flurries. Up to 13 cm of snow. Light to strong SW winds. Alpine L -24°C and H -3°C. Freezing level valley bottom.

Current weather forecast: Mountain Weather Forecast

Current ECC weather table: Here

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

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.