What I have found with the EPO dataset I have since 1948 is we get a loading pattern often. These huge drops in EPO dislodge so much cold it bleeds into the US and very often not always translate to snowy cold times here in New England. The correlation with cold with EPO is our largest telleconnection correlation. Get us the cold like we always say.
A lot of you turks probably have little memory of Dec 1989. I have not felt colder than I did working outside on the Thames River in New London Ct. So heres the 89 5H and todays GEFS EPS