Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–2
Wind-drifted slopes sitting directly below ridgetop are where you are most likely to trigger a dangerous avalanche. These avalanches can break deeply on weak, collapsible layers near the ground. You may not see any signs of instability before you trigger an avalanche. Low-angle or wind-sheltered slopes are safer options.