Avalanche Forecast

Archived

Dec 8th, 2025–Dec 9th, 2025

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

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.

Regions

Jasper, Brazeau, Churchill, Cirrus-Wilson, Fryatt, Icefields, Maligne, Marmot, Miette Lake, Pyramid.

Significant changes to the Avalanche hazard as new storm snow is loading and reactive on lee aspects, especially at treeline and above. Careful assessment is required for riders and climbers as conditions are far more hazardous than they have been so far this year.

Confidence

Moderate

Snowpack Summary

Recent HST is being aggressively redistributed in the Icefields by moderate S/SW winds over an existing soft wind slab. Below that, a firm and supportive mid-pack is found throughout the forecast region. Nov 10 MFcr, ~30cm off the ground, slowly faceting. HS ranges from 60 to 110cm at treeline in the Icefields. The Bald Hills area has less snow with an average HS of 60cm.

Weather Summary

Overnight

Periods of snow. Accumulation: 14 cm. Alpine temperature: Low -7 °C. Ridge wind west: 25 km/h gusting to 75 km/h.

Tuesday

Flurries. Accumulation: 6 cm. Alpine temperature: High -8 °C. Ridge wind west: 25 km/h gusting to 85 km/h.

Wednesday

Flurries. Accumulation: 10 cm. Alpine temperature: Low -9 °C, High -7 °C. Ridge wind west: 30 km/h gusting to 80 km/h.

Terrain and Travel Advice

Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
Be alert to changing conditions throughout the day.

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.