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Avalanche Forecast

Archived

Dec 28th, 2025–Dec 30th, 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 unlikely, human triggered possible.
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

Waterton Lakes, Waterton.

Snow has been redistributed into windslabs, 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. This falls over 80 cm of rapidly settling snow from recent storms. Under this 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

Sun-Tues

Moderate to strong SW winds with freezing levels remaining near valley bottom. Minimal new snow is forecasted.

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.