Persistent weak layers
- Above 1,800 m
Weak layers in persistent weak layer can still be disturbed
The clouds slowly clear during the night. Tomorrow the sun will mostly shine, often even unclouded. The wind will remain weak, at 2000 metres the temperature will be around -2 degrees Celsius and at 3000 metres around -9 degrees Celsius.
The persistent weak layer problem remains.
Weak layers in persistent weak layer can still be disturbed
The avalanche risk is moderate above around 1800 metres and low below that. Medium-sized slab avalanches can still be triggered by individuals in some places, especially from west to north to east, but also in a few places in the southern sector. Slabs near the surface can tear through the persistent weak layer. Avalanche prone locations are hardly recognisable and require a defensive route choice. Take particular care near transitions from a little to a lot of snow and in the blown-in entrance areas to steep gullies. On sunny slopes, small loose snow slides can spontaneously break loose from very steep slopes during the daytime changes.
A bound snow slab of former new or drift snow overlays soft layers (e.g. surface hoar, faceted crystals) or older, hard wind slabs. The snow surface is at least moistened up to around 1500 metres, even higher on sunny slopes. The snow surface can cool down overnight and is crusted can form and hardness in the morning. In general, areas with little snow alternate with considerable snowdrift accumulations. Breaks usually occur between the fresh and slightly older layers of drift snow or near the crust that forms the transition to the completely angular old snowpack. Under this crust, the old snowpack consists of deep rime and angular forms, which are interspersed with other crusts in areas with more snow. Snow from early winter can sometimes be found on the ground in the form of a hardness melt-freeze crust.
Bulletin data: Avalanche Warning Service Salzburg (CC BY 4.0)