Upper Passeier Valley

Significant warming: The danger of wet avalanches will increase during the day.

Significant warming: The danger of wet avalanches will increase during the day.

As a consequence of warming and solar radiation, the natural activity of wet avalanches will rapidly increase. This applies on steep east and west facing slopes below approximately 2800 m, as well as on steep south facing slopes in all altitude zones. This also applies on shady slopes below approximately 2600 m. The wet avalanches can release the saturated snowpack and reach large size in isolated cases. In steep gullies avalanches can in isolated cases reach as far as the valley bottom. The mostly small wind slabs of the last few days can be released in isolated cases on steep shady slopes at high altitudes and in high Alpine regions. On steep grassy slopes more frequent medium-sized and, in isolated cases, large gliding avalanches are possible below approximately 2600 m. Areas with glide cracks are to be avoided. Backcountry tours and ascents to alpine cabins should be started and concluded very early.

The weather will be very warm. The surface of the snowpack will freeze to form a strong crust and will already soften in the late morning. Sunshine and high temperatures will give rise from early morning to increasing and thorough wetting of the snowpack. These conditions will cause a substantial weakening of the snowpack. In areas with a thinner snowpack the saturation and consequently the loss of strength happens more rapidly Hardly any snow is lying at low and intermediate altitudes.

The weather will be exceptionally warm. The summery weather conditions will give rise to rapid and thorough wetting of the snowpack at elevated altitudes. The danger of wet and gliding avalanches will increase quickly during the day.