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Avalanche Forecast

Archived

Jan 31st, 2025–Feb 1st, 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 are a concern, especially where they sit over buried persistent weak layers.

Confidence

Moderate

Avalanche Summary

A few small wind slabs were reported in Pine Pass on Thursday.

Strong winds will reverse-load wind-exposed features.

Snowpack Summary

Exposed areas are highly wind-affected. In sheltered areas, the recent snow overlies a surface hoar layer most prevalent around treeline elevations and below. In sun-exposed terrain, surface hoar may rest atop 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

Friday night

Mostly cloudy with 0 to 5 cm of snow. 40 to 80 km/h east ridgetop wind. Treeline temperature - 27 °C.

Saturday

Mostly cloudy. 20 to 40 km/h northeast ridgetop wind. Treeline temperature -27 °C.

Sunday

Partly cloudy. 30 to 50 km/h northeast ridgetop wind. Treeline temperature -27 °C.

Monday

Mostly cloudy. 20 to 60 km/h northeast ridgetop winds. Treeline temperature -27 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid slopes that sound hollow or drum-like.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
  • 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.