Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1
On mid and upper elevation northerly aspects, the snowpack has deteriorated into layers of weak, sugary, faceted snow on top of a slick, hard bed surface. In exposed areas, stiff wind drifts exist on top of this weak snow, while in other areas, a shallow, soft slab has formed. Avoid steep terrain that has a smooth, rounded appearance, or that feels hollow underneath. Cracking, whumphing, or collapsing of the snowpack are signs of instability.