In its first advisory on the re-developed cyclone , the National Hurricane Center classified the system Ivan `` after considerable and sometimes animated in-house discussion of ( its demise ) ... in the midst of a low-pressure and surface frontal system over the eastern United States ... based primarily on the reasonable continuity observed in the analysis of the surface and low-level circulation . ''
In its first advisory on the re-developed cyclone , the National Hurricane Center classified the system Ivan after considerable and sometimes animated in-house discussion of ( its demise ) ... in the midst of a low-pressure and surface frontal system over the eastern United States ... based primarily on the reasonable continuity observed in the analysis of the surface and low-level circulation .