Avalanche Forecast
Issued: Dec 26th, 2017 3:51PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Due to the number of field observations
Weather Forecast
WEDNESDAY: Mostly sunny, light west winds, treeline temperatures around -15 C.THURSDAY: Mix of sun and cloud, light west winds, treeline temperatures around -15 C. FRIDAY: Light flurries with trace accumulations, light southwest winds, treeline temperatures around -15 C.
Avalanche Summary
No recent avalanches have been reported. A skier remotely triggered a large wind slab (size 2) near the Shames area on Sunday. The avalanche started on a steep south-facing rocky ridgetop at 1400 m.
Snowpack Summary
Strong outflow winds dramatically affected the surface snow over the past week, scouring some slopes down to an old crust and forming hard deposits in many other areas. Sheltered areas may still have 20-40 cm of powder from previous storms, but winds have come from a variety of directions and affected much of the terrain. Wind slabs rest on a variety of old surfaces including a thick melt-freeze crust. In some sheltered locations, soft feathery surface hoar crystals may sit above the crust.The snowpack is reported to be generally strong below this crust, with the possible exception of areas around Stewart and northern parts of the region where the late October crust can be found deep in the snowpack. This deep crust has been been associated with weak sugary snow and could possible be triggered in shallow snowpack areas.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South, South West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 27th, 2017 2:00PM