Avalanche Forecast
Issued: Dec 11th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
JA,
Avalanche Canada
Continued cracking and whumpfing being observed on our persistent weak layer down 30cm. Look for signs of slab development and dig to assess this layer before committing to terrain.
Summary
Confidence
Avalanche Summary
No new avalanches have been observed or reported in the last 3 days.
Snowpack Summary
5-10cm of recent snow overlies previous wind slab in the alpine. At tree line and below a surface hoar layer can be found down 25-35cm in sheltered areas. The snowpack ranges from 40-100cm deep and can be unsupportive in locations.
Weather Summary
Monday will be a mix of sun and cloud with variable light winds and seasonal temperatures. Warming trend for Tuesday with light precipitation possible into Wednesday.
Terrain and Travel Advice
- Watch for signs of slab formation throughout the day.
Problems
Wind Slabs
New wind slabs are forming with the recent snow.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Persistent Slabs
Marmot Basin Ski area reports surface hoar extending into some alpine features. Solar crust on south aspects is also of concern. Dig and assess this layer before committing to terrain. Lots of whumpfing and shooting cracks have been observed on this layer across Jasper but no avalanches have been observed yet. Below tree line hazard specific to steep open terrain where this problem may be preserved.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2022 4:00PM
