Watch for new wind slab formation at higher elevations and stay back from cornices.
Confidence
Moderate - Forecast snowfall amounts are uncertain on Sunday
Weather Forecast
On Sunday expect 10-15cm of snow at higher elevations, strong southwest winds and freezing levels at about 1900m. On Monday and Tuesday, the region should see a mix of sun and cloud, light to moderate winds and freezing levels at about 1300m.
Avalanche Summary
No new avalanches have been reported. New wind slab activity is expected with snow and wind forecast for Saturday night and Sunday.
Snowpack Summary
15-25cm of recent storm snow with strong southwest winds have formed wind slabs in leeward features. The recent snowfall may overlie a sun crust on steep solar aspects or small surface hoar in isolated sheltered areas. The recent wind has also formed cornices which are reported to be large and weak . Old weak layers can still be found in the snowpack but these layers are reported to be well bonded and triggering has become unlikely.
Problems
Cornices
Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.
Wind Slabs
Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.
Loose Wet
Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.