It will be interesting to see if the extended range GEFS is on to something, as it continues to advertise increasing h5 heights up top, and especially in the NAO domain towards mid November. Also keeps the Pacific (puke) in check. Some of the MJO forecasts have the tropical convection moving into the W Pac, and then possibly into Phase 8, so that may give some credibility to the idea of increasing high latitude h5 heights down the line.