Increase in danger of wet avalanches in the course of the day.
As the day progresses as a consequence of warming during the day and solar radiation there will be an increase in the danger of wet avalanches. Wet avalanches can in some places be released by a single winter sport participant. This applies on very steep shady slopes below approximately 2500 m, as well as on very steep sunny slopes at elevated altitudes.
Individual avalanche prone locations for dry avalanches are to be found on very steep shady 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 has frozen to form a strong crust and will soften during the day. Sunshine and high temperatures will give rise to gradual softening of the snowpack below approximately 3000 m. 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 increase in the danger of wet avalanches.
EARLIER Danger level
LATER Danger level
Avalanche Problem
Wet snow
Wet snow requires caution.
As the day progresses the likelihood of wet avalanches being released will increase quickly. In the regions where the outgoing longwave radiation during the night is reduced the danger will increase earlier.
Wet avalanches can in isolated cases 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.
Snowpack
dp.10: springtime scenario
During the night the weather will be partly cloudy in some regions. The snowpack is wet all the way through and its surface has a melt-freeze crust. The surface of the snowpack 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 danger of wet avalanches will persist.
Danger level
Avalanche Problem
Wet snow
Only a little snow is now lying.
Only isolated wet avalanches are possible. Caution is to be exercised on extremely steep shady slopes. Mostly avalanches are small.
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.
Tendency
Low avalanche danger will prevail.
Danger level
Avalanche Problem
Wet snow
Wet snow requires caution.
Wet avalanches can in very isolated cases be released by small loads and reach medium size. As a consequence of warming during the day only isolated natural wet avalanches are possible. Caution is to be exercised on very steep shady slopes. In steep gullies avalanches can in isolated cases 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.
