Persistent Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Unlikely
- Größe
- 3
Human triggered avalanches failing on a buried persistent weak layer are possible on isolated upper elevation slopes. Apparently, some avalanches can step down into buried persistent weak layers, involve large volumes of snow, and be quite dangerous and destructive. Recent activity in the zone shows that the weight from last week's snow and drifting was enough to reactivate the deeply buried October persistent weak layer on some slopes. You can still find this weak sugary basal layer lurking on upper elevation slopes facing northwest, north, and east.
Paige is approaching the crown on the western flank of last Sunday's Miller Bowl Avalanche, which failed on a deeply buried persistent weak layer.