Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
You can trigger an avalanche that breaks up to three feet deep where wind-drifted slabs rest over very weak snow. The most dangerous slopes are at higher elevations where slabs are thicker. You can identify wind-drifted features by their smooth rounded appearance and hollow feel. You can trigger avalanches from a distance or below, even from flat terrain. Stay aware of steeper terrain above you and give big slopes a wide buffer.
You can find safer travel options on wind-sheltered south and southwest slopes at lower elevations and by sticking to slopes less than about 30 degrees without similarly steep slopes above you.