Deep Persistent Slabs
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 2
Persistent slab avalanches remain possible on NW-N-NE-E aspects at all elevations throughout the forecast region. Weak old faceted snow that is now buried 2 to 4' deep or more under our recent storm snow is our layer of concern. Large destructive avalanches remain possible. This avalanche problem has been reactive to large loads in complex terrain. Complex terrain could have multiple avalanche paths, a high percentage of terrain 35 to 45 degrees in steepness, large cornices overhead, with multiple terrain traps and trigger points.
This avalanche problem represents a low likelihood but high consequence event. Avalanche activity associated with this persistent slab problem would be large and most likely unsurvivable. Previous tracks on a slope are not an indication of stability. Choosing simple terrain, terrain without rocks and cliffs that is not capable of producing a large avalanche, remains good travel advise.