Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can easily trigger an avalanche on drifted slopes that face north through east to southeast at upper elevations. Steep, drifted slopes below ridgelines are the most dangerous areas. You can recognize drifted slopes by their smooth, pillow-like appearance and fresh cornice development. If you trigger a slide in recently drifted snow it can easily step down and grow larger and more dangerous. If you notice obvious signs of instability like shooting cracks and audible collapses, then move to slopes sheltered from the wind or less than about 30 degrees.