This season's been nothing but irregular, and the Dry January Layer (DJL) is no exception right now. The weak, old snow that sat out during January is still there, and has become damp to wet in some locations with the warmer weather in the recent days. While the layer has trended more stubborn since it's first loading event in recent weeks, wet facets do weird things.
On Cutler Ridge yesterday, the wetted DJL to propagated with easy force (ECTP3) on our first test—see the surprising video below—before not being able to get the layer to propagate at all in the next 4 tests we conducted (ECTN). This just shows the irregularity with the snowpack this year, and how high our uncertainty should be heading in to this storm. This wet, warm, and weird setup is going to be a bit of a puzzle in how exactly it reacts to a sizeable loading event.
As we add more load and stress to this layer with new snow today, know it may be increasingly likely to trigger a slab on the PWL on mid- (NW-N-E) and upper elevation (W-N-E)slopes up to 3 feet deep. Any new snow or wind slab avalanches could step down into this weak, old snow and create a much larger slide than modest new snow totals might make you expect. This possibility is more likely in and along thinner, rocky snowpack areas.
I would approach any steep slope that harbors this layer of facets with caution.