Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche on steep slopes with drifted snow. Slopes that face north through east to southeast at upper elevations are the most dangerous. Look for and avoid steep drifted slopes directly below ridgelines and in cross-loaded gullies. You might not notice any signs of instability like shooting cracks or audible collapses before you trigger an avalanche. Look for slopes sheltered from the wind or less than about 35 degrees as safer choices.