Avalanche Forecast

Archived

Jan 9th, 2026–Jan 10th, 2026

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

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.

It’s been a windy week and strong winds will continue through the weekend. Expect ongoing wind slab concerns in exposed areas.

Find better riding in sheltered terrain and keep the deep persistent weak layer in mind in thin, rocky areas.

Confidence

Moderate

Uncertainty is due to the limited number of field observations.

Avalanche Summary

Natural deep persistent avalanches have been occurring periodically in shallow rocky areas.

Most recently, a natural 2.5 deep persistent avalanche was observed at Opal Hills on January 8th and one other nearby.

Snowpack Summary

Strong winds continue to redistributed snow into windslabs in alpine and open treeline areas. The midpack is supportive and sits above 40-60 cm of faceted snow that makes up the lower snowpack. Basal facets and an early season melt freeze crust are located ~30cm off of the ground and remain active as a weak layer in the snowpack.

Average snow depth in the Icefields Parkway area is 140-200cm and in the Maligne area average depth is 100cm.

Weather Summary

Saturday

Mainly cloudy with scattered flurries. Accumulation: 4 cm.

Alpine temperature: High -7 °C. Ridge wind southwest: 20-40 km/h.

Freezing level at valley bottom.

Sunday

Flurries. Accumulation: 6 cm. Alpine temperature: Low -7 °C, High -5 °C. Ridge wind southwest: 20-40 km/h. Freezing level: 1500 metres.

Monday

Periods of snow. Accumulation: 17 cm.

Alpine temperature: Low -5 °C, High -3 °C. Ridge wind southwest: 20 km/h gusting to 60 km/h. Freezing level: 1800 metres.

Terrain and Travel Advice

Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
Be mindful that deep instabilities are still present and have produced recent large avalanches.
Avoid shallow, rocky areas where the snowpack transitions from thick to thin.

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.

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.