Increase in danger of wet avalanches in the course of the day.
As a consequence of warming during the day and solar radiation there will be an increase in the danger of wet avalanches. Individual natural avalanches are possible as the day progresses. This applies on shady slopes below approximately 2500 m, as well as on sunny slopes at elevated altitudes. Especially on steep shady slopes avalanches can be released in the weakly bonded old snow and reach large size in isolated cases.
Dry avalanches can additionally be released by people, especially on very steep west, north and east facing slopes above approximately 2500 m. Especially transitions from a shallow to a deep snowpack are unfavourable. The avalanche prone locations are difficult to recognise.
Snowpack
dp.10: springtime scenario dp.1: deep persistent weak layer
The surface of the snowpack will freeze to form a strong crust only at high altitudes and will already soften in the late morning. Sunshine and high temperatures will give rise to increasing and thorough wetting of the snowpack below approximately 3000 m. The high humditiy will give rise in the afternoon to a loss of strength within the snowpack also on steep shady slopes. Steep west, north and east facing slopes: Faceted weak layers exist in the bottom section of the old snowpack at elevated altitudes.
Tendency
Outgoing longwave radiation during the night will be good. The backcountry touring conditions in the morning at elevated altitudes are generally favourable. As the day progresses as a consequence of warming during the day and solar radiation there will be an appreciable increase in the danger of wet avalanches.
Danger level
Avalanche Problem
Wet snow
Wet snow represents the main danger.
Wet avalanches can in some places be released by a single winter sport participant. The avalanche prone locations are to be found in particular on very steep west, north and east facing slopes at elevated altitudes. Avalanches can in isolated cases release the saturated snowpack and reach medium size. As the day progresses the likelihood of wet avalanches being released will increase.
Snowpack
dp.10: springtime scenario
The snowpack will be wet all the way through over a wide area. The surface of the snowpack will only just freeze and will soften quickly. In particular on steep sunny slopes as well as below approximately 1800 m only a little snow is now lying.
Tendency
The avalanche danger will increase during the day. Wet snow requires caution.
Danger level
Avalanche Problem
Wet snow
Wet snow requires caution.
Wet avalanches can in some places be released by small loads and reach medium size. As a consequence of warming during the day individual natural wet avalanches are possible. Caution is to be exercised on very steep shady slopes. In steep gullies avalanches can reach areas without any snow cover. The runout zones are to be avoided.
Snowpack
dp.10: springtime scenario
The snowpack will be wet all the way through over a wide area. The surface of the snowpack will only just freeze and will soften quickly. On steep sunny slopes as well as below approximately 1600 m only a little snow is now lying.
Tendency
Many starting zones have released the snow.
Danger level
Avalanche Problem
Wet snow
Wet snow requires caution.
Only isolated wet avalanches are possible. Caution is to be exercised on extremely steep shady slopes. In very isolated cases avalanches are medium-sized. In steep gullies they can in very isolated cases reach areas without any snow cover. The runout zones are to be treated with caution.
Snowpack
dp.10: springtime scenario
The snowpack will be wet all the way through over a wide area. The surface of the snowpack will only just freeze and will soften quickly. On steep sunny slopes as well as below approximately 1800 m hardly any snow is lying.
