Avalanche Forecast
Issued: Dec 19th, 2012 8:50AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to limited field observations
Weather Forecast
Wednesday night: Strong to Extreme SW winds at ridgetop.Thursday: Strong to Extreme SW winds at ridgetop. 1500m temp -10. Light to moderate snowfall resulting in 5 - 15 cm of snow.Friday: Light to Moderate SW winds at ridgetop. 1500m temp -15. Clearing skies.Saturday: Variable southerly winds at ridgetop. 1500m temp -15. Occasional flurries.
Avalanche Summary
No new avalanche observations. Observations are welcome, please email us: forecaster@avalanche.ca
Snowpack Summary
The upper snowpack comprises deep amounts of unconsolidated snow in sheltered locations, and soft slabs in open, exposed locations. These slabs are most likely immediately behind ridge crests and downslope ribs. There's ample recent snow available to fuel slab development if winds pick up. Overall, the top and mid-snowpack is reported to be settling well. Persistent and Deep persistent instabilities (surface hoar and an early November crust, respectively) located in the middle and near the bottom of the snowpack may still be a concern but there's little recent evidence of them. It is important to know that we have very limited observations for this region. Digging down and making your own observations, especially in thinner snowpack areas, remains a good idea to assist safe slope selection. You're looking for weak layers that pop or drop in stability tests.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 20th, 2012 2:00PM