Valgrisenche

The new snow is very loosely bonded.

The new snow is very loosely bonded.

New snow at low altitude. 20 to 40 cm of snow, and even more in some localities, will fall until late morning in all altitude zones. The areas bordering France are most affected. As a consequence of the snowfall small and medium sized avalanches are possible as the day progresses, but they can be large in isolated cases, especially on very steep slopes. As a consequence of new snow and a moderate wind, sometimes avalanche prone wind slabs will form in the afternoon. The wind slabs are bonding only slowly with the old snowpack in particular on north to northeast to south facing aspects above approximately 2400 m. These can be released. The avalanche prone locations are to be found on very steep slopes and adjacent to ridgelines and in gullies and bowls. Ski touring and other off-piste activities, including snowshoe hiking, call for caution and restraint.

The covering of new snow is dry. The upper section of the snowpack is unfavourably layered and its surface consists of loosely bonded snow lying on a crust, especially at intermediate and high altitudes. Towards its base, the snowpack is largely stable. As a consequence of falling temperatures a crust formed on the surface on Saturday. Below approximately 2400 m the snowpack is more stable.

The danger will decrease gradually.