Yesterday I legitimately thought this first wave had next to no chance of producing wintry wx here in the Carolinas (esp near/south of I-40), and although I understand the reasons behind this, I still can't believe how much that has changed even since then, one of the craziest flip-flops in the guidance I've personally ever seen. Usually we'll see a trend develop and progressively dampen or amplify this over the course of multiple runs and days, not a unanimous flip in practically every model in just one run, lol... Im normally not one to merely emphasize uncertainty as a main selling point for any system esp inside day 5-7, but it's definitely the case here.