Avalanche Forecast
Regions: Brazeau, Churchill, Cirrus-Wilson, Fryatt, Icefields, Jasper, Maligne, Marmot, Miette Lake, Pyramid.
Start and end your day early. A cooling trend should improve the travel condtions.
Confidence
Moderate
Avalanche Summary
Size 2 and 3 avalanches have been observed consistently through the spring transition. Avalanches are being triggered by cornice failures, sun, and/or loose wet slides that trigger deeper layers.
Snowpack Summary
Moist snowpack treeline and below where spring temperatures are penetrating well into the snowpack on all but north aspects in the alpine and treeline. Near-surface crusts on solar aspects are unsupportive and may have small, preserved surface hoar. A 50-100 cm settled mid-pack rests on top of weak facets, depth hoar, and weak old crusts. Tree line snow depth is 100-150 cm.
Weather Summary
Overnight: Isolated flurries. Low -3 °C. Ridge wind SW: 15-30 km/h.
Tuesday: Cloudy with sunny periods and isolated flurries. High -3 °C. Ridge wind W: 15-35 km/h. Freezing level: 1800 metres.
Wednesday: Cloudy with sunny periods and isolated flurries. Low -5 °C, High -4 °C. Ridge wind SW: 15-25 km/h. Freezing level: 1900 metres.
Terrain and Travel Advice
- Make conservative terrain choices and avoid overhead hazard.
Avalanche Problems
Wind Slabs
Isolated windslabs on N asps where HST available for transport.
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 1 - 2
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
Cornices
Changing conditions (solar, new load) 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: Possible - Likely
Expected Size: 1 - 3