Pollein and Saint-Marcel

The danger of moist and wet avalanches will already exist in the early morning.

The danger of moist and wet avalanches will already exist in the early morning.

The spring-like weather conditions will give rise to a loss of strength within the snowpack below approximately 3100 m. As a consequence of high temperatures, rain up to approximately 2800 m an unfavourable avalanche situation will develop in the course of the day. These meteorological conditions will bring about a gradual rise in the danger of moist and wet avalanches. Especially in starting zones where no previous releases have taken place medium-sized moist and wet avalanches are possible. Ground avalanches are possible in the second half of the day. The fresh wind slabs are mostly small and to be assessed with care and prudence. They are to be found in particular adjacent to ridgelines and in gullies and bowls and in the high Alpine regions. Wind slabs can be released, even by small loads in isolated cases.

In some localities 10 to 15 cm of snow will fall above approximately 2800 m. At high altitudes and in high Alpine regions snow depths vary greatly, depending on the infuence of the wind. Outgoing longwave radiation during the night will be severely restricted. The spring-like weather conditions will give rise to rapid moistening of the snowpack over a wide area. These conditions will foster a substantial settling of the near-surface layers in particular below approximately 2900 m. Individual weak layers exist in the snowpack in shady places that are protected from the wind, especially above approximately 2400 m.

As a consequence of the precipitation there will be an increase in the danger of moist and wet avalanches within the current danger level.