The slopes with the best riding conditions are also the most dangerous - wind-loaded alpine slopes
Confidence
Low - Due to the number of field observations
Weather Forecast
Thursday: Increasing cloud with light snowfall in the afternoon bringing trace amounts. Freezing level in valley bottoms and light increasing to moderate westerly ridgetop winds. Friday: A mix of sun and cloud with a chance of light snow flurries. Freeing level near valley bottoms and light southwesterly winds. Saturday: Increasing cloud and wind with flurries in the afternoon and freezing level remaining in valley bottoms.
Avalanche Summary
Reports from Monday are limited, but include an isolated explosive-triggered Size 1 wind slab avalanche.
Snowpack Summary
Continued snowfall brings total treeline snowpack depths to around a metre, with even more in the alpine, but it diminishes quickly below treeline. Recent storm and wind slabs, probably 30-50 cm thick, are bonding poorly to the old snow surface buried early December, which is probably a crust and/or a combination of facets and buried surface hoar. Below that a thick layer of facets is probably bonding poorly to the thick mid-November crust. We're receiving very little information from the region, so please consider sharing your observations via the Mountain Information Network.
Problems
Storm Slabs
Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.