Confidence
Fair - Timing or intensity of solar radiation is uncertain on Tuesday
Weather Forecast
Overnight and Tuesday: Light Northwest winds increasing to moderate overnight. Freezing level at valley bottom overnight and rising to 800 metres during the day. Alpine temperatures -9.0 overnight, some chance of an inversion in the alpine during the day that may bring temperatures up to about -3.0.Wednesday: Winds are expected to switch to the West-Southwest and remain moderate. Mostly sunny skies with warm temperatures in the alpine (inversion continues).Thursday: Alpine temperatures should cool down to about -6.0 under mostly clear skies and moderate Southwest winds.
Avalanche Summary
Loose snow avalanches up to size 1.5 continue to be reported from steep terrain.
Snowpack Summary
New surface hoar continues to grow in areas that are sheltered from the wind. Recent light snowfalls have been transported into soft wind slabs in the alpine. Continued wind effect may stiffen these wind slabs and allow for longer fracture propagations. Deeper instabilities have been inactive, but may still be triggered by large loads in thin snowpack areas.
Problems
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 Dry
Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.