Osterhorn Group,Gamsfeld Group

Some fresh wind slab snow in the summit areas and occasional small wet snow slides

Some fresh wind slab snow in the summit areas and occasional small wet snow slides

The avalanche risk is low. With the arrival of rain, small wet snow slides may spontaneously occur from slopes of all aspects that have not yet been discharged. In addition, small-scale snowdrift accumulations will form in the summit areas with some new fallen snow and wind, which are temporarily prone to triggering. Slab avalanches in fresh wind slab remain small.

Outgoing longwave radiation at night is limited and the snow surface hardly crusts can form. With the onset of rain, the snowpack below around 1800 metres is further soaked. In the summit areas, small-scale snowdrift accumulations form on the existing, moist snowpack. Soft layers in the fresh wind slab are temporarily prone to triggering.

In the night to Friday, the clouds will become increasingly dense and precipitation will set in from the second half of the night. Heavier showers may also occur temporarily. The snowfall level will be between 1600 and 1800 metres, with around 5 - 10 cm of new fallen snow above that. The north-westerly wind will blow briskly with peak wind speeds of up to 50 km/h. The temperature at 2000 metres is around 0 degrees.

Saturday will bring more sunshine and a slight rise in temperatures. The fresh wind slab settles quickly.