Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
You are unlikely to see signs of instability before you trigger a deadly avalanche. Observers have reported triggering avalanches from a distance, from below, and after multiple people have traveled a slope. Weak areas of the slab close to rocks and small trees are where you are most likely to trigger a slide. You can reduce the chances of triggering an avalanche by choosing planar slopes with a consistently deep snowpack and on slopes close to and under 30 degrees.