Persistent Slabs
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 3
Dangerous, hard slab avalanches up to 3 feet deep are possible on steep slopes in drifted mid and upper elevation terrain where poor snowpack structure exists. Weak, faceted snow from November is buried beneath a thick crust or multiple crusts, dense, damp snow, and the new snow. People could trigger dangerous hard slab avalanches up to 3 feet deep that propagate widely.
- Collapsing—seen as shooting cracks or heard as audible whumpfs—is a clear sign of unstable snow, though it may not always be present.
- Avalanches might be triggered remotely (from a distance or below).
UAC observer Nick Benoit found moist facets at the ground yesterday near Emigration Summit.