Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–2.5
A buried crust (felt by pole probing) has bridged this problem at lower elevations. Pay careful attention to when this crust disappears (~2100m). If there is no crust, there will be a higher likelihood of triggering the persistent weak layer (Dec 1 surface hoar) buried by 60-80cm of snow.