Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
The persistent slab problem exists in locations where snow has been preserved since November forming a weak layer that is now buried 1-3 feet deep below firm, cohesive slabs. As this problem trends more stubborn adjusting to the current load, the possibility still exists to trigger an avalanche. The best way to manage this problem is to choose terrain away from steep, rocky, and complex slopes where you are most likely to encounter those thin and sensitive areas of the snowpack. Riding across one of those thin, sensitive areas could collapse the weak layer and trigger a large/destructive avalanche.
(12/21/2023)
Here is a good example of the terrain where triggering a persistent slab is most likely.
Photo: Alex Drinkard