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Avalanche Forecast

Archived

Mar 15th, 2026–Mar 16th, 2026

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

Regions

Crowsnest North, Crowsnest South.

Reactive wind slabs may be forming in more sheltered terrain features from strong wind.

Keep your guard up at all elevations, and avoid wind-loaded features.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

No new avalanches were reported. We suspect that loose avalanche up to size 1 to 1.5 were occuring in steep terrain on Sunday.

On Friday, a few explosive triggered storm slabs up to size 2 were reported in the alpine.

Snowpack Summary

Strong to extreme winds are heavily wind affecting last week's storm snow. Expect newly formed wind slabs deep into the terrain.

The wind affected snow sits on a 3 to 10 cm thick crust on all aspects. The thickness of the crust depends on elevation.

A persistent weak layer of surface hoar and/or crust may be found around 70 to 100 cm down. Human triggered avalanches are unlikely on this layer in areas where a supportive crust exists below the recent snow.

In shallow snowpack areas, depth hoar (large facets) can be found near the bottom of the snowpack.

Weather Summary

Sunday Night
Mostly cloudy. 1 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -11 °C.

Monday
Cloudy. 90 km/h west ridgetop wind. Treeline temperature -6 °C.

Tuesday
Mostly cloudy. 80 km/h west ridgetop wind. Treeline temperature 0 °C.

Wednesday
Mostly cloudy. 1 to 5 mm of rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature 2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Expect slab conditions to change drastically as you move into wind-exposed terrain.
  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Cornice failures could trigger large and destructive avalanches.

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.