Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 2
Poor snowpack structure remains, comprised of a dense slab over weak, faceted snow. In specific areas above treeline, the slab is cohesive enough to produce avalanches. This structure is hard to trust, and the bottom line is that human-triggered avalanches remain possible. It is becoming less likely to trigger an avalanche each day, and slides will be pockety in nature. I don't expect the slides to be very wide, but if triggered, they will break to the ground up to two to three feet deep or more in areas that have been previously wind-loaded.
On some near treeline slopes, and many slopes below treeline, the slab has faceted through and has lost all cohesion. This is my strategy for quality turns, and to avoid today's avalanche problem.