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Avalanche Forecast

Archived

Mar 14th, 2026–Mar 15th, 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 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.

Regions

Crowsnest North, Crowsnest South.

Wind affected terrain is the most likely place to trigger large storm slabs on Sunday.

Avoid steep, rocky, and wind-affected areas where triggering slabs is most likely.

Confidence

Moderate

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

Avalanche Summary

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

Snowpack Summary

Cornices are large and looming. Avoid traveling underneath them.

30 to 45 cm of recent snow and strong southwest winds have formed storm slabs that will be most reactive in wind-affected terrain.

The recent 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

Saturday Night
Partly cloudy. 0 to 3 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -15 °C.

Sunday
Sunny. 30 km/h west ridgetop wind. Treeline temperature -13 °C.

Monday
Mostly cloudy. 70 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 2100 m.

Tuesday
Mostly cloudy. 80 km/h west ridgetop wind. Treeline temperature 3 °C. Freezing level rising to 2500 m.

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

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.