Avalanche Forecast
Issued: Dec 20th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
mconlan,
Avalanche Canada
A substantial amount of snow fell across the region on Thursday and Friday. Conservative decision-making will be essential until this snow stabilizes.
Summary
Confidence
Moderate - Uncertainty is due to the track & intensity of the incoming weather system.
Weather Forecast
FRIDAY NIGHT: Cloudy with light snowfall, accumulation 1 to 3 cm, moderate southwest wind, treeline temperature -1 C, freezing level 1100 m.
SATURDAY: Cloudy with light snowfall, accumulation 2 to 5 cm, light to moderate southwest wind, treeline temperature -2 C, freezing level 1000 m.
SUNDAY: Cloudy with snowfall and afternoon clearing, accumulation 10 to cm, light southeast wind, treeline temperature -1 C, freezing level 1000 m.
MONDAY: Mix of sun and cloud, light west wind, treeline temperature -4 C, freezing level 500 m.
Avalanche Summary
A natural avalanche cycle likely occurred during the storm on Thursday and Friday, particularly at higher elevations and where smooth ground exists. A few skier-triggered avalanches were reported on Thursday, where the ground was smooth.
Snowpack Summary
Around 50 to 100 cm of snow fell in the past few days. Above around 1000 m, all of this likely fell as snow whereas rain has likely soaked the snow at lower elevations. Nonetheless, this substantial amount of new snow will require a few days to stabilize.
Terrain and Travel
- Make conservative terrain choices and avoid overhead hazard.
- Choose gentle slopes without steep terrain above.
Problems
Storm Slabs
Around 50 to 100 cm of snow fell in the region in the past few days. This snow will require time to stabilize. Human-triggered avalanches will remain likely to occur on Saturday.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 21st, 2019 5:00PM
