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Archived

Avalanche Forecast

Apr 5th, 2025–Apr 8th, 2025
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

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

There is forecasted to be a spike in the freezing level on Sunday increasing to 2600-2800m. Start and end your day early. Sun plus the warm temperatures will lead to an increase in natural activity particularly if cornices fail acting as gargantuan triggers.

Confidence

Moderate

Avalanche Summary

Size 2 and 3 avalanches have been observed consistently the last few days. It is becoming difficult to determine what is new and old. Some avalanches are being triggered by cornice failures, sun, or loose wet slides that trigger deeper layers. Expect this pattern to continue.

Snowpack Summary

There is 10-35 cm of soft snow overlying a crust on all but due north aspects. 1-5mm Surface hoar sits on top of this crust in many areas. A 50-100 cm settled mid-pack rests on top of weak facets. The lower snowpack consists of depth hoar and breaking down crusts. Tree line snow depth is 110-170 cm.

Weather Summary

Sunday will be a mix of sun and cloud, 2 °C, and 2500m or higher freezing level. Expect Monday will bring clouds, flurries, -2 to 2 °C, and 2200m freezing level. Tuesday will be clouds and sun, slightly cooler temperatures, and 1900m freezing level. Wednesday will be similar conditions to Tuesday.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Even brief periods of direct sun could produce natural avalanches.

Avalanche Problems

Persistent Slabs

Small avalanches have the potential to step down to this deeper problem layer, made up of buried weaker facets below an crust formed earlier in the season.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1.5 - 3

Loose Wet

This will form on solar aspects, starting around rocks and trees that may contribute to warming the snow around them.

Aspects: South East, South, South West, West.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Cornices

Solar warming may result in cornice failure, acting as a large trigger on the slope below. Avoid overhead exposure containing overhanging cornices.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 3