Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2
Avy savvy, snow-pro Trevor Katz was out and about Monday and the results from his snowpit tests (ECTP 16) echo our concerns for avalanches breaking to a layer of old faceted snow, formed in November.
Here's the deal-
A cohesive piece of snow or what we in snow-geek-speak call a slab rests on top a persistent weak layer (PWL) of old, faceted, sugar snow formed during November. Unfortunately, this setup is structurally challenged and here to stay with us for some time. And while not quite as talkative as just a few days ago, backcountry travelers continue reporting collapses and audible whumpfs which is Mother Natures heads up, telling us to pump the brakes and think about our terrain choices and consequences of triggering a slide.