Persistent weak layers
- Above 1,800 m
Weakly bonded old snow represents the main danger.
Weakly bonded old snow represents the main danger.
Weak layers in the old snowpack can still be released in some places. The avalanche prone locations are to be found in all aspects above approximately 1800 m. The avalanche prone locations are and are barely recognisable, even to the trained eye. Mostly the avalanches are medium-sized. At transitions from a shallow to a deep snowpack, when entering gullies and bowls for example the likelihood of avalanches being released is greater. Below approximately 2200 m medium-sized gliding avalanches are possible. This applies on very steep sunny slopes.
The snowpack will be prone to triggering in some places. Faceted weak layers exist in the old snowpack in all aspects, especially on steep shady slopes above the tree line, and in areas close to the tree line, this also applies on steep sunny slopes above approximately 2300 m.
Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)