The Pacific onslaught on this GFS run is just insane. The MJO alone isn’t going to fix that problem. The MJO moving out of the Maritime Continent and across the Pacific (6-7-8) is a process that
adds momentum into the Pacific Jet. Having the jet already energized isn’t a good starting point. So, we need to take a step back there before we can move forward. Something has the jet really energized so far here in early winter. You can see here on the 2nd image where the subtropical jet along 30N was weaker than normal from late Oct to early Nov, but has been stronger than normal since late Nov. The MJO has been in 5-6 during that time, not where you would expect to see an extended Pac Jet. Also, there hasn't been strong + East Asian Mtn Torque either. * Throws hands up *