Persistent weak layers
- Above 2,400 m
- Size
- 2
Stability: poor · Frequency: some
New snow and wind slabs require caution.
Stability: poor · Frequency: some
Stability: poor · Frequency: some
Stability: very poor · Frequency: few
Temporary increase in avalanche danger as a consequence of warming during the day and solar radiation. Backcountry touring and other off-piste activities call for extensive experience in the assessment of avalanche danger.
Over a wide area 10 to 30 cm of snow, and even more in some localities, has fallen. Over a wide area new snow is lying on soft layers. In some places new snow is lying on surface hoar.
New snow and wind slabs require caution.
Avalanches can be released in near-surface layers of the snowpack and reach medium size. Avalanche prone locations are to be found above the tree line. Shady slopes where surface hoar has been covered with snow are especially unfavourable. Meticulous route selection is recommended. In addition the fresh wind slabs should be taken into account. They can be released by a single winter sport participant above the tree line. This applies especially adjacent to ridgelines and in pass areas. Mostly avalanches are medium-sized. On rocky slopes dry loose snow avalanches are possible as the day progresses. In the event of prolonged bright spells this applies. In addition a latent danger of gliding avalanches exists, in particular on steep sunny slopes below approximately 2600 m, as well as on steep shady slopes below approximately 2400 m. These can reach dangerously large size. Areas with glide cracks are to be avoided as far as possible.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)