Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
The most dangerous terrain sits above treeline. Avoid steep north-to-northeast-facing slopes that hold more than about two feet of denser, recently wind-drifted snow. Visible cracking or audible collapsing underfoot indicates the snow in that area can avalanche on slopes steeper than around 30 degrees.
Avalanche conditions are generally safer on other slopes but you may encounter shallowly-buried obstacles like logs and rocks.