Upper Passeier Valley

Fresh wind slabs represent the main danger. Weakly bonded old snow is to be evaluated with care and prudence.

Fresh wind slabs represent the main danger. Weakly bonded old snow is to be evaluated with care and prudence.

As a consequence of new snow and a strong to storm force wind from northwesterly directions, sometimes avalanche prone wind slabs formed. They are to be evaluated with care and prudence in particular in steep terrain. The avalanche prone locations are to be found in gullies and bowls, and behind abrupt changes in the terrain above approximately 2000 m. The prevalence of avalanche prone locations and likelihood of triggering will increase with altitude. Avalanches can reach medium size. Dry avalanches can additionally in isolated cases be released in the weakly bonded old snow also, especially on very steep shady slopes above approximately 2400 m. In isolated cases avalanches can penetrate even deep layers. Meticulous route selection is recommended.

Over a wide area 10 to 20 cm of snow has fallen. As a consequence of the strong to storm force northwesterly wind, fresh snow drift accumulations formed during the last few days. In some cases the various wind slabs have bonded poorly together. As a consequence of the strong wind the wind slabs will increase in size additionally on Tuesday. Faceted weak layers exist in the old snowpack, especially on steep shady slopes above approximately 2400 m.

Over a wide area strong northwesterly wind. The weather conditions will bring about a very slow stabilisation of the snow drift accumulations.