I know the argument over PAC vs ATL can be made almost every year and one bad side can overwhelm the one good side. But IMO in order to have ANY chances you need the AO/NAO to help be neutral/neg. I think that graph Wes showed many a time showed that its needed for snow in the MA. Obvi the PAC matters and both help with KUs but I'll take chances with a crap PAC and good Greenland blocking any day.