Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1.5–3
Weak snow formed in January and early February is buried 2 to 3 feet deep. Within the last 2 days, we have continued to see human-triggered avalanches failing at this layer. This problem is more pronounced on slopes that face the north half of the compass, where faceted snow was very well developed and remains buried. The hazard is also elevated in steep rocky terrain and on previously wind-loaded slopes. You may or may not see warning signs like large collapses or other recent avalanches, and remote triggering remains possible. Avoidance of steep avalanche terrain is the appropriate way to manage this problem. Small terrain traps can have big consequences.
(2/27/2026)
Persistent slab avalanche on a steep sheltered slope.
This avalanche might look small relative to big peaks around it, but could easily bury or injure you.