A Haiku:Deep Persistent Slab.Not very likely to heal.Constantly watchful(so poetry isn't my strength. But, I think you get the idea;)
Weather Forecast
Mainly cloudy Tuesday with some isolated flurries and little accumulation. Blustery SW winds at ridge top forecasted to hold steady moderate values with strong to extreme gusts (70 km/h). Alpine temperatures forecasted for a high of -5 °C.
Snowpack Summary
Creamy, pressed and settled surface snow with some wind effect in the open. A spattering of previously buried, near surface wind slabs. Two questionable interfaces dwn between 60 and 100cms though the mid-pack. All this, making up the deep persistent slab; spawning from the whole season snowpack sitting on a large, weak facet layer off the ground.
Avalanche Summary
New wind load is triggering deep slabs and cornice triggered slabs on North through West aspects, up to size 3.
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.
Deep Persistent Slabs
Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.
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.