Valgrisenche

The wind slabs must be evaluated with care and prudence.

The wind slabs must be evaluated with care and prudence.

Until Sunday the weather will be very mild. Warming to the high Alpine regions. In some localities increase in danger of moist snow slides as the penetration by moisture increases. Along the border with Switzerland and along the border with France: The wind will be strong. In particular here the wind slabs will increase in size additionally. They can be released by a single winter sport participant in isolated cases above approximately 2400 m. The avalanche prone locations are to be found in particular adjacent to ridgelines and at transitions from a shallow to a deep snowpack. Especially on extremely steep slopes natural avalanches must be expected. Until the temperature falls individual small and medium-sized dry and moist avalanches are possible below approximately 3000 m.

The Avalanche Warning Service currently has only a small amount of information that has been collected in the field. Above approximately 2400 m snow depths vary greatly, depending on the infuence of the wind. Wind slabs are lying on a hard crust. Below approximately 2000 m only a little snow is lying. Even in moderately steep terrain there is a danger of falling on the icy crust. Many starting zones have released the snow, in the regions exposed to heavier precipitation in particular below approximately 2800 m. Towards its surface, the snowpack is weak in some cases and its surface consists of loosely bonded snow lying on a strong crust. The old snowpack will be generally well bonded.

The avalanche danger will persist.