Possible reason why GFS went south was it trended stronger with the EPO ridge and is also flatter with the overall flow. While the euro also has that EPO ridge, it digs the trough more to the west of us allowing the storm to consolidate and/or amplify. The gfs has a few weaker waves along the flatter boundary. Both give us good results, and I think there will likely be more amplitude and less suppression in mid-February than January.