▁the ▁same ▁day , ▁the ▁Bo M ▁designated ▁the ▁storm ▁as ▁Trop ical ▁Low ▁ 1 5 U ▁while ▁the ▁J TW C ▁designated ▁the ▁storm ▁as ▁Trop ical ▁Cy clone ▁ 1 6 S . ▁On ▁the ▁morning ▁of ▁March ▁ 8 , ▁the ▁low ▁strength ened ▁into ▁a ▁Category ▁ 1 ▁tropical ▁cy clone , ▁assigning ▁the ▁name ▁Ko ji . ▁However , ▁a ▁few ▁hours ▁later , ▁Ko ji ▁moved ▁west ▁of ▁ 9 0 ° E , ▁and ▁was ▁renamed ▁J oni ▁by ▁the ▁Maur it ius ▁Meteor ological ▁Service . ▁Over ▁the ▁next ▁few ▁days , ▁J oni ▁continued ▁to ▁organ ize . ▁However , ▁on ▁March ▁ 1 1 , ▁wind ▁she ar ▁began ▁er oding ▁away ▁the ▁storm ' s ▁outer ▁bands ▁of ▁con ve ction . ▁On ▁March ▁ 1 2 , ▁strong ▁wind ▁she ar ▁completely ▁er oded ▁away ▁the ▁storm ' s ▁northern ▁con ve ction , ▁and ▁disp la ced ▁the ▁remaining ▁con ve ction ▁to ▁the ▁sout heast ▁of ▁the ▁storm , ▁leaving ▁J oni ' s ▁low ▁level ▁circul ation ▁center ▁completely ▁exposed . ▁As ▁a ▁result , ▁J oni ▁rapidly ▁began ▁to ▁weak en . ▁Late ▁on ▁March ▁ 1 2 , ▁R S MC ▁Re union ▁issued ▁their ▁last ▁advis ory ▁on ▁Ko ji – J oni , ▁as ▁the ▁storm ▁deg ener ated ▁into ▁an ▁extr at rop ical ▁low . ▁ ▁Mod er ate ▁Trop ical ▁Storm ▁Ku ena ▁ ▁On ▁June ▁ 1 , ▁a