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Avalanche Forecast

Archived

Nov 28th, 2024–Nov 29th, 2024

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.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Lizard-Flathead, Akamina, Flathead, Lizard, Moyie, St. Mary, Crowsnest South.

Travel with caution around steep wind-affected slopes.

Confidence

Low

Avalanche Summary

Natural avalanche activity has decreased since the weekend, but explosives triggered slab avalanches up to size 2 on Wednesday.

Light to moderate winds in the forecast could form wind slabs in exposed terrain, particularly near ridgelines.

If you head out please consider submitting a MIN report.

Snowpack Summary

40 to 60 cm of snow from the past week remains soft in sheltered areas but may have formed reactive slabs in wind-affected terrain, particularly near ridgelines. The snowpack has a crust near the ground, with total snow depths of 100 to 150 cm at treeline.

Weather Summary

Thursday Night

Cloudy. 25 km/h west ridgetop wind. Treeline temperature -10 °C.

Friday

Mostly cloudy. 35 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Saturday

Mix of sun and cloud with 0 to 1 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -6 °C.

Sunday

Mostly cloudy with 1 to 2 cm of snow. 25 km/h southwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

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.