As this thing comes up the coast it's going to mutatae into a coastal storm or nor'easter and that is why most of the global models show significant deepening once again it reaxches eastern NC/ Hatteras. At that point it will clearly be ex tropical and pulling cooler air from a large HIGH to the north. So as the Hermine pulls in cooler air on its nw side whole the eastern side stays warm/ triopical it becomes baroclinic .. develop frontal boundaries and it will no long