Avalanche Forecast
Issued: Dec 7th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Dry, Wind Slabs and Persistent Slabs.
a.l. horton,
Parks Canada
New snow will make for great skiing! Caution is advised as snow coverage over hazards such as rocks and trees may be thin. Snowpack variability will require careful assessment of every run.
Summary
Weather Forecast
The storm ends Saturday night replaced by clear cold air and northerly winds.
Sunday: Temps drop with a northerly flow. Mix of sun and cloud.
Monday: Mix of sun and clouds. Temps from -5 to -10 and light northerly ridge winds.
Tuesday: Mix of sun and cloud. Seasonal temperatures and light Westerly winds.
Details here: Mountain Weather Forecast.
Snowpack Summary
40 to 50 cm of snow has fallen since Tuesday on a mix of surfaces; ground, surface facets, surface hoar, and previous wind slab and/or hard wind pressed surfaces. Moderate SW winds are building soft wind slabs at ridge tops. The Oct. and Nov. crusts are present in the mid and lower snowpack. Basal facets are weak and are changing into depth hoar.
Avalanche Summary
No new avalanches reported or observed by field teams today.
Confidence
Due to the number and quality of field observations on Sunday
Problems
Loose Dry
Up to 40 cm of unconsolidated new snow could cause significant sluffing in entrained ice climbing features.
- 874
- If triggered dry loose point releases can form deeper deposits in terrain traps.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
New soft windslabs have formed in the lee areas. The distribution at treeline is more isolated.
- Use caution in lee areas in the alpine and treeline. Recent storm snow has formed wind slabs.
- Use caution on open slopes and convex rolls
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Avalanches possible where wind has stiffened the new snow into a slab.
- Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.
Aspects: North, North East, East, South East, West, North West.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Dec 8th, 2019 4:00PM
