Deep Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
Backcountry travelers could trigger deep persistent slab avalanches on a variety of aspects and elevations, and involvement will likely result in a fatality. These avalanches could also step down from the release of a wet slide or be triggered by a cornice drop. Above 8,000 feet, slab depths are likely to range from 4 to 8 feet and 2 to 4 feet below 8,000 feet. Don’t let previous tracks lull you into thinking a slopes is safe. They are not an indication of stability with a persistent deep slab problem.