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Avalanche Forecast

Archived

Dec 2nd, 2025–Dec 3rd, 2025

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

Regions

Kananaskis, Bow Valley, Highwood Pass, North 40, Spray - KLakes.

Increasing winds and lots of snow to move around has bumped up the danger rating a bit. Watch for freshly formed windslab and changing conditions throughout the day. Rugged travel conditions below 1950m.

Confidence

Moderate

Avalanche Summary

No new avalanches or reports today.

Snowpack Summary

Valley Bottom: There is just enough snow to travel. Watch out for stumps and the typical willows. We are talking around 20cm of snow here.

Above 1950m: Increased winds have most likely started to form windslabs where exposed and the low density snow is no longer everywhere! The bond of the new snow to the rain crust is starting to facet out with the cooler temps, something to continue to monitor as new snow loads on top . The crust starts to disappear at around 2350m so be careful in the higher elevations to not hit rocks or other features if the crust is not present. The height of snow is about 60-100cm on average.

There have been a few reports and observations of isolated wind slabs in the higher terrain so be alert to changing conditions.

Weather Summary

Wednesday will see partly cloudy skies with some sun at times. A day time high of -9 with increasing winds to 40km/h out of the West. No new snow expected

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are isolated, but may remain reactive.
  • Avoid freshly wind-loaded terrain features.

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.