If we look at phase 8 and 1 in october we can see a very wet pattern across the great lakes, ohio valley and the northeast. In phase 8 the wetness will be further west across the upper great lakes and parts of the midwest. In phase one the wetness spreads further south and east into most of the eastern two thirds of the u.s. B.C and the pacific northwest will get in on some enhanced precipitation as well as the northern jet supplies some precipitation and more systems barrel into Alaska(-PNA pattern develops).
Going further down the road, Phase 8 MJO precipitation correlates well with the impressive precipitation field and a classic comma shape configuration shown on the 18z GFS at hour 192. The look of this system reminds me of what the groundhog day blizzard looked like on february 2nd 2011 except it is 2 months early. If this were to occur in december then we are in business for big snows in the east. This may be a sign of a more inland track this winter as well as the classic east coast phaser with a ridge axis centred over the rockies.