The PDO seems to be heading back to a predominately negative phase, and it might stay that way for a while. I never know what to think of it anyway, as it is clearly a response to multiple influences, and not an atmospheric driver itself. Most of the patterns/temp/precip anomalies that the PDO is associated with, have a stronger correlation to the ENSO state itself. So I suppose it is an enhancer/moderator in certain cases. We have had a recent tendency for a massive ridge in the EPAC/suppression of the Aleutian low, and combined with SST anomaly persistence, seems to argue for negative phase. The ENSO has an impact on the elements that drive the PDO (like the Aleutian low). Looking at the distribution of SSTs associated with the -/+ PDO phases, it seems logical that the cool phase should be generally favored in a Nina, and vise versa, esp during stronger ENSO events. Ofc it doesn't always work out this way.