Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 2–3
Persistent weak layers, comprised of faceted snow, and crusts exist in terrain that held snow prior to Sunday November 24th. This terrain generally includes all aspects above 9,000 feet and northerly slopes down to 8,000 feet. Skiers and riders venturing into these areas are likely to trigger slab avalanches that are one to three feet deep. In this situation previous tracks on a slope should not be considered to be an indication of stability. Understanding and identifying where the old weak snow is present is essential in avoiding this hazard.