Avalanche Forecast

Archived

Dec 11th, 2025–Dec 14th, 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 unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Alpine

Natural and human triggered avalanches likely.

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.

Up to 50 cm of recent has fallen since the weekend. This combined with strong winds has created dangerous avalanche conditions.

Confidence

High

Avalanche Summary

There have been numerous natural windslabs observed throughout the park up to size 2.5 over the past few days. Many bed surfaces have been reloaded with new snow. Avalanche control at Parker's ridge produced slabs up to size 3 with good propagation at ridge top.

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

Snowpack Summary

Up to 50 cm of snow fell since this past weekend. Strong winds from the west and north west have scoured much of the alpine and tree line and loaded lee features. 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

Friday

Flurries.

Accumulation: 8 cm.

Alpine temperature: High -6 °C.

Mostly light ridge wind occasionally gusting to 35 km/h.

Saturday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -11 °C, High -3 °C.

Ridge wind southwest: 20 km/h gusting to 45 km/h.

Sunday

Accumulation: up to 30 cm.

Alpine temperature: Low -5 °C, High -3 °C.

Ridge wind southwest: 20 km/h gusting to 45 km/h.

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.