If it does come North from an inland SE US location, where will the cold air come from? It is technically cold enough on those panels and there is some CAD, but any sort of southerly component with a storm approaching from the SW would ruin the column anyway. We would need it to maintain distinct different areas of lowest pressure and get off to our SE before a Fujiwhara effect (thanks Sakuhei Fuhiwhara) to bring it back toward us off the ocean, so we do not lose temps. (Edit, and we need that high to not depart as quickly)