Weakly bonded old snow requires caution. The danger of wet avalanches will increase significantly during the day.
Avalanches can in many cases 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 in particular on steep west, north and east facing slopes above approximately 2000 m. Individual avalanche prone locations are to be found also on steep sunny slopes above approximately 2600 m. Caution is to be exercised in particular in little used terrain, as well as 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. Remotely triggered avalanches are possible. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack serve as an alarm indicating the danger.
Wind slabs are in individual cases still prone to triggering on steep shady slopes at elevated altitudes.
As a consequence of warming during the day and solar radiation wet avalanches are to be expected. This applies in particular on very steep sunny slopes, and at the base of rock walls. The runout zones are to be treated with caution.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be good over a wide area. Sunshine and high temperatures will give rise as the day progresses to rapid and thorough wetting of the snowpack. This applies especially on steep sunny slopes below approximately 2400 m.
Tendency
Steep shady slopes high altitudes and the high Alpine regions: Wind slabs and weakly bonded old snow require caution. Steep sunny slopes intermediate and high altitudes: The danger of wet avalanches will increase during the day.
EARLIER Danger level
2000m
Avalanche Problem
Persistent weak layer
2000m
LATER Danger level
2000m
Avalanche Problem
Persistent weak layer
2000m
Wet snow
2600m
Weakly bonded old snow and wet snow represent the main danger.
Avalanches can be released in the old snowpack and reach large size in isolated cases on west, north and east facing slopes. This applies even in case of a single winter sport participant. The avalanche prone locations are to be found in particular above approximately 2000 m. Individual avalanche prone locations are to be found also on steep sunny slopes at elevated altitudes. Caution is to be exercised in particular in little used terrain, as well as at transitions from a shallow to a deep snowpack. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack serve as an alarm sign. Remotely triggered avalanches are possible in isolated cases.
As a consequence of warming during the day and solar radiation wet avalanches are to be expected. This applies in particular on very steep sunny slopes below approximately 2600 m, as well as at the base of rock walls. The runout zones are to be treated with caution.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
On Friday it will be very mild over a wide area.
Shady slopes: The snowpack remains prone to triggering in some places. Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be good. The surface of the snowpack will freeze to form a strong crust and will soften during the day. Sunshine and high temperatures will give rise as the day progresses to thorough wetting of the snowpack in particular on steep sunny slopes below approximately 2600 m. This also applies at the base of rock walls.
Tendency
In the course of the day the activity of wet avalanches will increase. Weakly bonded old snow requires caution.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wet snow
Weak layers in the old snowpack can be released in isolated cases. The danger of wet avalanches will increase during the day.
Avalanches can in isolated cases be released in the old snowpack and reach medium size on west, north and east facing slopes. This applies in case of a single winter sport participant. In their paths avalanches can entrain the wet snow.
As a consequence of warming during the day and solar radiation individual wet avalanches are to be expected.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be good over a wide area. Sunshine and high temperatures will give rise as the day progresses to rapid and thorough wetting of the snowpack.
Tendency
Weakly bonded old snow and wet snow require caution.
