Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You could trigger avalanches on northerly and easterly-facing slopes where slabs up to three feet thick rest over weak snow. The most dangerous areas are steep, wind-loaded slopes below ridgelines, in cross-loaded gullies, and steep rollovers. You can trigger avalanches from adjacent slopes and from below so plan your routes and safe spots accordingly. Cracking and collapsing may not be present before an avalanche breaks. Sticking to slopes less than about 30 degrees will increase your safety margin.