Avalanche Forecast

Archived

Dec 10th, 2025–Dec 11th, 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 possible, human triggered probable.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Regions

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

The new snow and wind continue to create dangerous slab avalanche conditions. Careful assessment is required for riders and climbers.

Confidence

Moderate

Avalanche Summary

Notable natural avalanche cycle on the Icefields Parkway with windslabs dominating the field reports. Avalanche control at Parker's ridge produced slabs up to sz 3 with good propagation at ridge top.

Potential for triggering destructive slabs in large features remains a concern.

Snowpack Summary

Up to 40 cm HST redistributed in the Icefields by strong W and NW winds in open areas at treeline and above, with evidence of a small natural cycle BTL in the storm snow. The mid and lower pack consists primarily of facets. A small crust is located 30cm from the bottom. Snowpack ranges from 60 to 120cm at treeline in the Icefields. The Bald Hills area has received less storm snow; the average height is ~60cm.

Weather Summary

Overnight

Flurries. Accumulation, 7cm Alpine temperature: Low -5 °C. Ridge wind southwest: 10 km/h.

Thursday

Cloudy with Sunny periods. Alpine temperature: High -6 °C. Light Ridge winds. Freezing level 2400m

Friday

Flurries. Accumulation: 6 cm. Alpine temperature: Low -10 °C, High -9 °C. Light ridge winds Freezing level, 2400m.

Terrain and Travel Advice

Be alert to changing conditions throughout the day.
Be careful as you transition into wind-affected terrain.

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.

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.