Where Did the PWL Problem Go?
Think of the snowpack like any other material under stress. Adding new snow or wind load increases weight and tension in the system. Take that loading away long enough, and the snowpack slowly settles, releasing some of that stress. Avalanches become less likely over time, even though the facets don’t disappear entirely.
This is a period of dormancy. The problem still exists, but is currently quiet. It’s been over a week since the last reported slab avalanche, suggesting the snowpack is reaching equilibrium. That said, additional loading or warming could reactivate this layer.
During this stretch of high pressure, the snow surface is weakening and becoming faceted, especially in wind-protected terrain. Once buried, this surface snow will likely be the next layer we’re watching and could become the next persistent weak layer. It’s worth keeping an eye on how much the surface continues to weaken over the next week.