Persistent Slabs
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Unlikely
- Dimensione
- 1–2
In isolated areas above 9,000 feet, limited potential remains for skiers and riders to trigger hard slabs with depths up to three feet. Very large avalanches might be triggered by snow machines in extreme terrain like the east face of Lava Mountain.