I'm a little confused about the source of the below indices chart:
ftp://ftp.cdc.noaa.gov/Public/gbates/reforecast2/teleconn/4indices.png
It's slightly different than this site (which I think are both supposed to be GEFS, maybe different times):
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/teleconnections.shtml
This first would indicate that the NAO could go negative in the long range. I also like that the EPO will stay negative.
You would think if the PNA is positive, AO is negative, NAO is negative, and EPO is negative; a good pattern would emerge in the coming model runs.