|Courtesy Kyle MacRitchie|
A continuity of such a negative Arctic Oscillation would enhance cold weather potential over the nation. A negative AO also enhances the chances for a negative NAO, seeing as how close the two indices are. This does not necessarily mean that they will both go negative, but, because they are so close in how they function, they can move together.
This is still very long out and subject to major change, so take this and use it at your own risk.