Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 4
All indications are that the persistent weak layer of facets near the ground is dormant for now. This layer has gained noticeable strength. It has a 3-10 foot thick hard slab on top of it and will be hard to impact. Most extended column tests (but not all) are no longer breaking at all. There was only one reported collapse three days ago; otherwise, no other collapses reported in sometime. The last avalanches on this layer were a week ago. Yesterday I tried to find any signs of instability on this layer high in Neffs Canyon but couldn't find any.
It's not impossible to trigger hard slab avalanches on this layer but it is unlikely.