Avalanche Forecast
Issued: Dec 17th, 2012 9:57AM
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
Tuesday: Mostly a bright, dry day with some sunshine. Ridgetop winds around 30 km/h from the west. Treeline temperatures around -10C.Wednesday: A Pacific frontal system affecting the coast will bring only light amounts of new snow to this region (less than 5cm expected). Winds will rise to around 60 km/h from the SW. Treeline temperatures will rise to around -4C.Thursday: Light snowfall (around 5 cm) is expected, with light southerly winds and treeline temperatures around -8C.
Avalanche Summary
Small loose snow avalanches have been from steep terrain in the recent low density storm snow. Due to our limited observations for this region at this time, your avalanche observations are welcome at 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. Any observations from the field are welcome at forecaster@avalanche.ca.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 18th, 2012 2:00PM