Increase in danger of wet and gliding avalanches as a consequence of warming during the day and solar radiation.
A clear night will be followed in the early morning by favourable conditions over a wide area. As a consequence of warming during the day and the solar radiation, the likelihood of wet avalanches being released will increase gradually on very steep sunny slopes. As the penetration by moisture increases individual natural avalanches are possible in the afternoon. Avalanches can release the saturated snowpack and reach medium size in isolated cases. Gliding avalanches can also occur. The avalanche prone locations for gliding avalanches are to be found in particular on very steep grassy slopes below approximately 2600 m. Backcountry tours, off-piste skiing and ascents to alpine cabins should be started early and concluded timely.
Snowpack
dp.10: springtime scenario dp.2: gliding snow
Outgoing longwave radiation during the night will be good. The surface of the snowpack will freeze to form a strong crust. In steep terrain there is a danger of falling on the hard snow surface. Sunshine and high temperatures will give rise from the middle of the day to increasing and thorough wetting of the snowpack on sunny slopes. Towards its base, the snowpack is moist, especially on sunny slopes, as well as in all aspects below approximately 2200 m.
Tendency
Increase in avalanche danger as a consequence of warming during the day and solar radiation.
EARLIER Danger level
LATER Danger level
Avalanche Problem
Wet snow
Increase in danger of wet avalanches as a consequence of warming during the day and solar radiation.
Early and late morning: A clear night will be followed by favourable conditions over a wide area. Individual avalanche prone locations for dry avalanches are to be found in particular on extremely steep shady slopes at elevated altitudes. Avalanches can in some cases reach medium size.
During the day: As a consequence of warming during the day and the solar radiation, the likelihood of wet avalanches being released will increase gradually on very steep sunny slopes. As the penetration by moisture increases individual natural avalanches are possible in the afternoon. Avalanches can release the saturated snowpack and reach medium size. Backcountry tours, off-piste skiing and ascents to alpine cabins should be started early and concluded timely.
Snowpack
dp.10: springtime scenario
Outgoing longwave radiation during the night will be quite good. The surface of the snowpack will freeze to form a strong crust. In steep terrain there is a danger of falling on the hard snow surface. Sunshine and high temperatures will give rise as the day progresses to a loss of strength within the snowpack in particular on sunny slopes. Towards its base, the snowpack is moist, especially on sunny slopes, as well as in all aspects below approximately 2200 m.
Isolated avalanche prone weak layers exist in the old snowpack especially on little used west, north and east facing slopes. This applies on shady slopes above approximately 2600 m, as well as on west and east facing slopes above approximately 2800 m.
