I still wonder if the discharge of radioactive water off Japan has played, or is playing a role, in this marine heat wave. Perhaps a small role, and its more likely that changes in atmospheric circulations thanks to the WP warm pool is playing a larger role. But I don’t really know for sure.
Also notice the marine heat wave seems to be spreading eastward with its extent all the way south of the GOA. One way we could see wholesale pacific changes is if that heat wave spreads all the way to the western coast of NA, while it abates off Japan and NW of Hawaii. Then we’d circle back to a 2013-15-like pattern. But that remains to be seen whether it happens, if ever. And if it does, it could take a few years.