Plenty of background things that should send the trough west eventually, just a matter of when. Currently EPS showing Jan 15-20th, which makes sense to me.
EPS weeklies have been slowly pushing back the transition period. A couple weeks back it was closer to January 5-15, now its more like January 15-20. Also, less of a tendency for the troughs to really dig south so I might get a very brief window, but if the EPS is to believed it would probably be the central and northern Plains that are more likely to see something the last 1/3 of the month and into February. If the EPS is generally right and doesn't keep punting I imagine there could be some good winter storms in the KS-IA-WI corridor, perhaps shifting around a bit with time.