Silvretta East

Gradual increase in avalanche danger as a consequence of warming during the day and solar radiation. Weak layers in the upper part of the snowpack can be released in some places by people.

Gradual increase in avalanche danger as a consequence of warming during the day and solar radiation. Weak layers in the upper part of the snowpack can be released in some places by people.

A clear night will be followed in the early morning by quite favourable conditions mostly. Some small to medium-sized gliding avalanches are possible. As a consequence of warming during the day and the solar radiation, the likelihood of dry and moist avalanches being released will increase gradually. Avalanches can in particular be released in near-surface layers and reach medium size. Avalanche prone locations are to be found in particular on very steep west, north and east facing slopes between approximately 2000 and 2800 m. The avalanche prone locations are difficult to recognise. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack can indicate the danger. Avalanches can in isolated cases penetrate near-ground layers of the snowpack and reach large size.

Outgoing longwave radiation during the night will be quite good over a wide area. The surface of the snowpack will freeze to form a strong crust and will soften during the day. Isolated avalanche prone weak layers exist in the top section of the old snowpack, especially on west, north and northeast facing slopes between approximately 2000 and 2800 m, and on sunny slopes in high Alpine regions. Towards its base, the snowpack consists of faceted crystals, in particular on west, north and east facing slopes at elevated altitudes.

Outgoing longwave radiation during the night will be good over a wide area. The avalanche danger will increase a little during the day.