Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 1.5–2.5
The likelihood of triggering a persistent slab avalanche is unlikely, however, it is not impossible. Weak snow that formed in November is generally buried 2 to 5 feet deep. We have not seen any avalanches on this layer since New Year’s Eve, but poor structure still exists in some terrain. You are most likely to impact this weak layer in areas that are thin from lack of snow, wind effected or areas that have avalanched previously. Avoid very steep, rocky, convex slopes, especially if it looks thin.