Avalanche Forecast
Regions: Jasper.
Weather Forecast
A cooling trend has taken hold. Temperatures will gradually "warm", through the weekend with alpine highs near -10C. The sky will be generally a mix of sun and cloud with no precipitation in the near future. Moderate south-west winds forecastedA detailed mountain weather forecast is available from Avalanche Canada.
Snowpack Summary
Moderate south west winds continue to load lee slopes at tree line and above. The Dec. 11th persistent weak layer has been buried by up to 100cm snow and producing a significant natural cycle up to size 4, observable from the Icefields Parkway . The deep persistent weakness lingers near the ground.
Avalanche Summary
Friday's avalanche control produced consistent size 2 to 2.5 avalanches running to roadside. Damage from the most recent, intensive natural cycle is only now visible; with large slides, on skied terrain. Most notably is a large, possibly cornice triggered size 3.5, which ran nearly full run-out, on the Churchill (north and south) slide paths.
Confidence
Due to the number and quality of field observations
Avalanche Problems
Wind Slabs
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 1 - 2.5
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible - Likely
Expected Size: 1 - 3.5
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Unlikely - Possible
Expected Size: 1 - 4