I think we all agree that without HLB this Winter is basically set in stone mild overall.
When the Greenland block set up, I was concerned that the AO wasn't also going decently negative. I think we need them both to counter all the warm drivers with sustainability.
IF a SSW does occur, it would assist in forcing a favorable HLB Regime i.m.o..
How long that would last against so many hostile variables ?., God knows.
The MJO is, of course the other driver that can help but, can also hurt, as we all know.