Border Graie Alps

New snow and wind slabs: The avalanche danger will already increase in the late morning.

New snow and wind slabs: The avalanche danger will already increase in the late morning.

The new snow and wind slabs of Tuesday will be deposited on the unfavourable surface of an old snowpack on steep shady slopes above approximately 2200 m. The avalanche prone locations are to be found in particular on steep shady slopes at high altitudes and in high Alpine regions and adjacent to ridgelines and in gullies and bowls. This applies especially along the border with France. Mostly the avalanches are medium-sized but can be released also by a single winter sport participant. Restraint should be exercised because avalanches can sweep people along and give rise to falls. Below approximately 2200 m and in the Prealps the avalanche prone locations are more rare and the danger is lower. Be careful of the numerous rocks hidden by the little snow.

Sunny slopes and below the tree line: The snowpack is fairly homogeneous and its surface has a melt-freeze crust. Shady slopes and in places that are protected from the wind: The old snowpack is faceted and weak; its surface is loosely bonded and consists of surface hoar and faceted crystals. Large-grained weak layers exist in the bottom section of the snowpack here. At low and intermediate altitudes from a snow sport perspective, in most cases insufficient snow is lying. At high altitudes and in high Alpine regions snow depths vary greatly, depending on the infuence of the wind. 15 to 30 cm of snow will fall on Tuesday above approximately 1300 m, especially in the Prealps. The fresh snow as well as the wind slabs that are forming during the snowfall will be deposited on the unfavourable surface of an old snowpack in particular on northwest, north and east facing slopes.

The avalanche danger will persist.