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Avalanche Forecast

Archived

Feb 2nd, 2025–Feb 3rd, 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 on southwest aspects, in the alpine, from reverse-loading on Saturday.

Snowpack Summary

The region has received up to 20 cm of new snow since Thursday. Strong easterly winds have reverse-loaded exposed terrain. The new snow likely overlies a layer of facets and, in sheltered locations, surface hoar. These snow crystals don't bond well with new snow and may contribute to the avalanche problem persisting.

A widespread crust with facets and/or surface hoar, buried in mid-January, is approximately 50 to 90 cm below the surface.

The lower snowpack is generally well consolidated.

Weather Summary

Sunday

Mostly cloudy. 30 to 50 km/h northeast ridgetop wind. Treeline temperature -30 °C.

Monday

Mostly cloudy. 30 to 50 km/h northeast ridgetop winds. Treeline temperature -30 °C.

Tuesday

Scattered cloud. 30 to 60 km/h east ridgetop winds. Treeline temperature -25 °C.

Wednesday

Few clouds. 10 to 20 km/h northeast 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.