Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1.5–2.5
You can trigger an avalanche on slopes where strong winds are drifting snow onto an already fragile snowpack. The most dangerous slopes face northerly and east near and above treeline. Avalanches can break on weak snow near the ground and wrap around terrain features becoming larger than you anticipate. Shooting cracks in the new snow and audible collapses are signs you should move to lower-angle slopes or southerly-facing slopes without weak layers of snow near the ground.