On Sunday night, a wintery storm will set in, bringing heavy precipitation. The storm is expected to transport the fresh fallen
snow and old snow intensively. In zones distant from ridgelines, deep snowdrift accumulations will be generated in places.
More deeply embedded inside the snowpack, particularly on west-facing, north-facing and east-facing slopes, pronounced weak
layers are evident. On the northern flank of the Alps, these weak layers are generally blanketed over by thick layers.From
the southern Valais over the northern Ticino as far as Grisons, the entire old snowpack is expansively metamorphosed in numerous
areas. The old snowpack, particularly in the inneralpine regions, is prone to triggering. On the weekend, numerous large-sized
avalanches were triggered by persons in those regions, in isolated cases the releases were very-large sized.