Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–2.5
Avalanches are becoming harder to trigger, but the hazard is slow to heal and exists on a wide range of slopes. The most problematic and dangerous slopes are those where recently formed slabs rest on buried weak layers, 1 to 3 feet thick. You are more likely to trigger a slide where slabs are thinner and can trigger a large avalanche from above, below, or adjacent to steep slopes. Lower-angle, wind-sheltered slopes are a safer bet to avoid this problem.