Persistent Slabs
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Likely
- Tamaño
- 3
Very weak, sugary, faceted snow exists on almost all northerly-facing slopes at upper and mid-elevations. On slopes steeper than 30°, people could trigger dangerous slab avalanches one to three feet deep, failing on the widespread persistent weak layer. Avalanches remain likely on drifted upper-elevation slopes, and are possible on slopes facing W-N-E at upper and mid-elevations, even in sheltered terrain. Low elevation and many southerly facing slopes were mostly bare of snow or had only shallow coverage before this past week's storms.
- Recent avalanches, shooting cracks, and collapsing (whumpfs) are signs of unstable snow. These are "Red Flags," and you should reevaluate your plans if you encounter them in the backcountry.
- Avalanches today could be triggered remotely (from a distance) or from below.
- A ride in even a small avalanche would be perilous due to shallowly buried rocks, stumps, and downed trees.