Persistent weak layers
- All elevations
Persistent-weak-layer problem on E/N facing slopes
Persistent-weak-layer problem on E/N facing slopes
Avalanche danger above 2000 m is moderate, below that altitude danger is low.Main problem: persistent weak layer. Older snowdrift accumulations can be triggered by large additional loading. The few danager zones occur at summit level behind discontinuities and on leeward slopes (also distant from ridges). In addition, isolated gliding snow activity and glide-snow avalanches can’t be excluded. Due to higher temperatures and solar radiation, naturally triggered loose-snow avalanches are possible on extremely steep rough and rocky slopes.
At high altitudes the older snowdrifts lie deposited atop a hardened layer or atop faceted crystals. The fundament is stable. Leeward slopes are currently without snow. At intermediate altitudes the surface is hard and icy. On sunny slopes firn snow is being produced. On extremely steep shady slopes surface hoar is forming and faceted crystals are weakening the snowpack.
Perfect mountain weather on Monday. Light winds (shifting from north to east to southeast). At 2000 m: +4 degrees (zero-degree level at Dachstein-summit altitude).
Ongoingly sunny and mild. Avalanche danger levels will decrease.
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)