Avalanche Forecast

Archived

Dec 6th, 2025–Dec 7th, 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.

Light snow and winds will build our wind slabs, but hopefully not to the point they become serious problem. If you're out and about, watch wind patterns to monitor slab development.

Confidence

High

Avalanche Summary

Nothing today.

Snowpack Summary

Tree line and above is starting to see wind slabs become more prominent. The treeline/alpine border has small, isolated wind slabs likely caused by the terrain's localized influence on wind patterns. They are unreactive and appear to be well bonded to underlying layers; not much of a problem at the minute. Higher up in more open terrain the wind slabs are more specific in terms of distribution. Gullies and cross loaded areas with large fetches (snow fields that provide snow for wind transport) are likely places to find more consistent slabs. We aren't seeing any activity with these slabs, but they are there and will change character with additional load. The mid November crust is still giving us good travel up to 2350m and hasn't started to break down and cause problems.

Weather Summary

Sunday will see a slight warming trend and some incoming snow. Temps will rise progressively tomorrow from -9 to -7 by evening and continue to -6 overnight Sunday. Snow will be light, but continuous with a few centimeters tonight, and a few more over the day tomorrow. Treeline winds will be moderate (30-40 km/hr) from the SW.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

Wind slabs are most reactive during their formation.

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.