Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2
Weak, faceted snow persists at the base of the snow pack on northerly and shaded aspects above 9,000 feet. Dense slab avalanches, up to three feet in depth, could be triggered by backcountry travelers on this persistent weak layer. Caution is advised as these slabs may fail even if they have been previously crossed by other people.