My GWO analogs keep most of the cold air locked up in the plains and upper midwest for february with a ridge in alaska and troughiness across the northern tier. I used years with similar AAM values from december as well as similar phases, amplitude, torque and tendency.
500mb upper height anomalies for feb have a very +NAO, +AO, active SE ridge, -EPO and neutral to -PNA. I think the +NAO is overdone but the rest is in line with my thinking.
Although departures will start off colder then normal in the east ridging will begin to form again in the 6-10 day period with a stormy/volatile pattern taking place. I don't see sustained blocking showing up in february and if so it should remain east based. A more progressive pattern will take place for the first ten days of february with a fast moving MJO. As the MJO moves into phases 2 and 3 i can see more blocking showing up across eastern greenland and an attempt at a positive PNA spike. By week four the MJO should propagate into octant 4/5. This coupled with negative frictional/mountain torque values will form a strong ridge in the east to end off february. I do think colder then normal temperatures are on the way from the 13th-20th of the month centred in the northern plains, upper midwest and great lakes. With a more active southern branch and phases 8-2 of the MJO, storminess is likely across the northeast,great lakes and ohio valley in this period.
Here is my analog package centered on the u.s: