I totally agree that there certainly is still some decent cold bottled up there in southeast Canada with some cold 850's, however, it's been that way through much of the winter. I'm not really using persistence at all with my thoughts or forecast...(well perhaps that's a lie) but in order for us I think to utilize that we're going to need to see some drastic pattern change...something much more than just a "relaxation" in the flow. Also, that cold can easily be eroded in the coming weeks. I guess you can argue that by saying this warm look can easily erode too but IMO everything points/signals towards the warmth dominating and by everything I mean global teleconnections. I know they begin to lose their correlation as we move into spring, but at least through the end of model guidance some of those signals remain strong and continue to drive the hemispheric configuration.