 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 . " Despite unfavorable shear and its disorganized cloud structure , the cyclone intensified to tropical storm status early on September 23 , based on Hurricane Hunter reports . As an area of deep convection developed over the center , Ivan reached winds of 60 mph ( 95 km / h ) , though the winds decreased as thunderstorm activity diminished . Ivan weakened to a tropical depression at 0000 UTC on September 24 , and two hours later it moved ashore near Holly Beach , Louisiana . Initial computer models forecast the low @-@ level circulation to turn southwestward and re @-@ emerge into the Gulf of Mexico . However , the storm rapidly weakened over land , and by 1200 UTC on September 24 Ivan degenerated into a remnant low pressure area over southeastern Texas . The low turned to the south and the circulation dissipated early on September 25 . The remnant trough reached the northwestern Gulf of Mexico later that day , briefly producing scatter thunderstorms before it diminished . 
