Ankogel-Hochalm Group

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.

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.

As a consequence of warming during the day and the solar radiation, the likelihood of moist and wet avalanches being released will increase. Avalanches can in particular be released in near-surface layers and reach medium size. This applies in all aspects in particular below approximately 2400 m, also on very steep sunny slopes in particular at elevated altitudes. Avalanche prone locations for dry avalanches are to be found also on very steep west, north and east facing slopes above approximately 2400 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. The surface of the snowpack has frozen to form a strong crust only at high altitudes and will already soften in the late morning. The snowpack will become increasingly wet all the way through. This applies in all aspects at low and intermediate altitudes, as well as on steep sunny slopes at elevated altitudes. Isolated avalanche prone weak layers exist in the top section of the old snowpack, especially on west, north and northeast facing slopes between approximately 2200 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 during the day.