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Archived

Avalanche Forecast

Feb 7th, 2025–Feb 8th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

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

For the best turns look for sheltered areas, winds have significantly impacted open areas in the alpine and treeline.

Confidence

High

Avalanche Summary

On Wednesday a size 2.5 Deep Persistent Slab avalanche was observed in the Churchill area along the 93N. It was triggered by cornice fall and stepped down to the Deep Persistent layer.

Snowpack Summary

Surface snow redistributed by wind sits a variety of surfaces depending on location, including melt freeze crusts, sun crusts, hard wind slabs, and soft faceted snow. The midpack is weak and faceted. At the bottom of the snowpack are the early season crusts, which are faceting and surrounded by large depth hoar. The snowpack is 70-130 cm in depth at tree line, and thins quickly below.

Weather Summary

Saturday

A mix of sun and cloud. Precipitation: Nil. Alpine temperature: High -16 °C. Ridge wind west: 10-20 km/h.

Sunday

A mix of sun and cloud. Precipitation: Nil. Alpine temperature: Low -26 °C, High -19 °C. Ridge wind northwest: 10-25 km/h.

Monday

Sunny Precipitation: Nil. Alpine temperature: Low -27 °C, High -18 °C. Ridge wind light to 15 km/h.

Terrain and Travel Advice

  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

Avalanche Problems

Wind Slabs

10-20cm of soft snow has been redistributed into windslabs in lee features particularly at ridgetops. They appear to be stubborn to trigger but be sure to assess this before entering wind effected terrain. Watch for windslabs on all aspects as winds have been variable in direction.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2.5

Deep Persistent Slabs

A variety of crusts with facets above and below exist at the bottom of the snowpack. These layers are going to be with us for a long time and pose a low probability, high consequence situation if triggered.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3