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Avalanche Forecast

Archived

Feb 1st, 2025–Feb 2nd, 2025

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

Regions

East Kakwa, Pine Pass, Tumbler.

Wind slabs remain a concern. Be cautious in wind-exposed terrain.

Confidence

Moderate

Avalanche Summary

2 large wind slab avalanches were reported in the region on Saturday.

Strong northeast winds have reverse-loaded terrain.

Snowpack Summary

Exposed areas are highly wind-affected. In sheltered areas, up to 20 cm of soft snow overlies a surface hoar layer. In sun-exposed terrain, the snow overlies a thin crust, while elsewhere it sits atop a mix of old wind-affected surfaces and weak, faceted snow.

A widespread crust with facets and/or surface hoar, buried in mid-January, is approximately 30 to 70 cm below the surface.

The mid and lower snowpack is generally well consolidated.

Weather Summary

Saturday night

Mostly cloudy. 30 to 60 km/h northeast ridgetop wind. Treeline temperature -30 °C.

Sunday

Mostly cloudy. 30 to 60 km/h northeast ridgetop wind. Treeline temperature -27 °C.

Monday

Scattered cloud. 20 to 60 km/h northeast ridgetop winds. Treeline temperature -25 °C.

Tuesday

Clear skies. 30 to 50 km/h east ridgetop winds. Treeline temperature -20 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid slopes that sound hollow or drum-like.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.

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.