The 1 wild card out there is that there is a SSW occurring in a few days per attached graph. You can see how the mean 10mb zonal winds represented by the solid blue line dip below the thin gray line. That alone would be throwing a curve ball to modeling, but after a brief, weak recovery, the Eps take the mean winds back below the gray line from about 3/5 until 3/25. That's crazy. Since this is a mean ensemble forecast, the operationals likely don't have it figured into what they are spitting out every 6 or 12 hours.
All that said, if course, it doesn't guarantee things like the cold end up on our side of the Pole or that the Pacific side cooperates. But it might explain some wild swings in modeling as well as bouts of cold and snow to come...maybe?