▁ 1 8 : 0 0   UTC , ▁but ▁re - ac quired ▁tropical ▁characteristics ▁just ▁ 1 8   h ours ▁later ▁while ▁moving ▁n ortheast ward ▁away ▁from ▁the ▁a for ement ioned ▁tr ough . ▁By ▁ 0 6 : 0 0   UTC ▁on ▁September   1 6 , ▁a ▁small ▁mid - level ▁eye ▁became ▁apparent ▁and ▁Ian ▁began ▁to ▁intens ify , ▁with ▁wind s ▁reaching ▁ 6 0   m ph ▁( 9 5   km / h ) ▁at ▁that ▁time . ▁However , ▁deep ▁con ve ction ▁soon ▁diss ip ated ▁as ▁cold ▁air ▁wrapped ▁into ▁the ▁center , ▁mark ing ▁Ian ' s ▁transition ▁into ▁an ▁extr at rop ical ▁cy clone ▁around ▁ 1 2 : 0 0   UTC . ▁On ▁September   1 7 , ▁Ian ' s ▁rem n ants ▁were ▁absor bed ▁by ▁a ▁larger ▁extr at rop ical ▁cy clone ▁and ▁soon ▁diss ip ated . ▁ ▁Trop ical ▁Storm ▁Julia ▁ ▁On ▁September   1 , ▁a ▁tropical ▁wave ▁entered ▁the ▁Atlantic ▁from ▁the ▁west ▁coast ▁of ▁Africa . ▁A ▁low ▁pressure ▁area ▁developed ▁after ▁a ▁burst ▁in ▁con ve ction ▁near ▁the ▁Le ew ard ▁Islands ▁around ▁September   6 , ▁but ▁dry ▁air ▁and ▁wind ▁she ar ▁in hib ited ▁further ▁development . ▁At ▁ 0 6 : 0 0   UTC ▁on ▁September   1 3 , ▁the ▁system ▁maintained ▁sufficient ▁organization ▁to ▁become ▁a ▁tropical ▁de pression . ▁Ar ound ▁that