Avalanche Forecast

Archived

Jan 15th, 2026–Jan 18th, 2026

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.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

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

Temperatures have cooled and we are seeing less reactivity within the snowpack. Watch for windslabs at treeline and above as well as frozen tree bombs at lower elevations.

Confidence

High

The number, quality, or consistency of field observations is good, and supports our confidence.

Avalanche Summary

No new avalanche activity was observed.

Snowpack Summary

A thin melt freeze crust was being encountered on all aspects up to 2300m and likely higher and thicker on more solar aspects. Windslabs are common at treeline and above from the strong winds over this past week with some areas stripped down to rock.

The November crust is deeply buried in the snowpack down 120-200cm. Field tests on this layer over the past few days have produced no results from a deep tap test on this layer. There is still some concern for triggering this layer from thin snowpack areas.

Weather Summary

Cooler temperatures overnight are forecast with a low of -14C. Day time highs will climb to 5C and winds will be out NE in the moderate range. No new precip is forecast over the next few days.

https://hpfx.collab.science.gc.ca/~fsg006/productviewer/ab/table/AB_Rockies_Forecast.html

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

Avoid steep terrain, including convex rolls, or areas with a thin, rocky, or variable snowpack.
Be careful as you transition into wind-affected terrain.
Watch for areas of hard wind slab on alpine 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.

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.