Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 4
It is getting harder and more unlikely to trigger a deep avalanche. However, the buried Persistent Weak Layer is still there. It has gained some strength however, during snowpit tests on Friday, 3 out of 4 tests still failed and cleanly propagated across the weak layer. (four locations: ECTP22, ECTP22, ECTX. ECTP22) The Extended Column Test results were stubborn (22 taps) but still propagated (P) and cleanly failed.
So, here's the deal. While it does seem much less likely that people will trigger avalanches, it still remains a serious concern. Many slopes will stay in place, others may not. The problem is that I can't tell you which ones will avalanche. I can't figure out which steep north facing slopes are stable enough for me to feel comfortable enough to get onto. This tells me things remain dangerous.