Weakly bonded old snow and wet snow require caution.
Avalanches can be released in the old snowpack and reach large size. This applies even in case of a single winter sport participant. The avalanche prone locations are to be found especially on west, north and east facing slopes above approximately 2000 m and in all aspects at elevated altitudes. Caution is to be exercised in particular at transitions from a shallow to a deep snowpack. Whumpfing sounds can indicate the danger. Remotely triggered avalanches are possible. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances.
Outgoing longwave radiation during the night will be severely restricted. Individual small and, in isolated cases, medium-sized wet avalanches are possible below approximately 2200 m.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Shady slopes: Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
The surface of the snowpack will only just freeze. The weather conditions gave rise to thorough wetting of the snowpack below approximately 2200 m.
Tendency
Weakly bonded old snow is to be evaluated with care and prudence. Slight increase in danger of wet avalanches as a consequence of warming during the day and solar radiation.
Danger level
2000m
Avalanche Problem
Persistent weak layer
2000m
Wet snow
2200m
Weakly bonded old snow represents the main danger. Wet snow requires caution.
Distinct weak layers exist in the bottom section of the snowpack in particular above approximately 2000 m. Winter sport participants can release avalanches as before. These can penetrate deep layers and reach large size, especially on west, north and east facing slopes. Individual avalanche prone locations are to be found also on southeast, south and southwest facing slopes above approximately 2400 m. Caution is to be exercised in particular at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example. Remotely triggered avalanches are possible.
Outgoing longwave radiation during the night will be severely restricted at times. Individual small and, in isolated cases, medium-sized wet loose snow avalanches are possible below approximately 2200 m.
In addition gliding avalanches are possible. This applies especially on cut and grassy slopes below approximately 2400 m.
Snowpack
dp.7: snow-poor zones in snow-rich surrounding dp.10: springtime scenario
The snowpack remains prone to triggering. Avalanche prone weak layers exist in the bottom section of the snowpack on west, north and east facing slopes.
The surface of the snowpack will only just freeze and will soften quickly.
Tendency
Weakly bonded old snow requires caution. Single winter sport participants can release avalanches as before.
The weather will be sunny over a wide area. Slight increase in danger of wet avalanches as a consequence of warming during the day and solar radiation.
Danger level
2000m
Avalanche Problem
Persistent weak layer
2000m
Wet snow
2200m
Weakly bonded old snow and wet snow represent the main danger.
Avalanches can be released in the old snowpack and reach quite a large size on west, north and east facing slopes. This applies even in case of a single winter sport participant in some cases. The avalanche prone locations are to be found in particular above approximately 2000 m. Caution is to be exercised in particular at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances.
Outgoing longwave radiation during the night will be severely restricted. Individual small and, in isolated cases, medium-sized wet avalanches are possible below approximately 2200 m.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Shady slopes: Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes. This applies especially above approximately 2000 m.
The surface of the snowpack will only just freeze. The weather conditions gave rise to thorough wetting of the snowpack below approximately 2200 m.
Tendency
Weakly bonded old snow requires caution. Slight increase in danger of wet avalanches as a consequence of warming during the day and solar radiation.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wet snow
2200m
Weakly bonded old snow requires caution. Wet snow requires caution.
Even single winter sport participants can release avalanches in isolated cases. In particular shady slopes are dangerous, especially in areas close to the tree line, as well as above the tree line.
Outgoing longwave radiation during the night will be severely restricted over a wide area. Individual small and, in isolated cases, medium-sized wet loose snow avalanches are possible below approximately 2200 m.
In addition gliding avalanches are possible. This applies especially on cut and grassy slopes.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
The snowpack remains unstable in some places. Avalanche prone weak layers exist in the bottom section of the snowpack on shady slopes.
The surface of the snowpack will cool hardly at all during the overcast night and will already be soft in the early morning.
Tendency
Weakly bonded old snow requires caution.
The weather will be sunny over a wide area. Slight increase in danger of wet avalanches as a consequence of warming during the day and solar radiation.
