Here is the source that I cited for those looking for more information on la nina structure.
https://www.tandfonline.com/doi/full/10.1080/16742834.2018.1386538
We are talking about a very negative PDO, 2014-2015 was very positive...that year was el nino, this is la nina, so you lost me on that. Believe me, I would be perfectly fine if things played out like that, though...
-PDO doesn't make la nina stronger, but it's not the best signal for winter in the east...means -PNA is more favored and makes polar fields more important.
It's not a deal breaker, though.