▁Province , ▁and ▁diss ip ated . ▁ ▁Trop ical ▁De pression ▁ 1 2 ▁ ▁On ▁February ▁ 2 3 , ▁an ▁area ▁of ▁low ▁pressure ▁formed ▁over ▁the ▁middle ▁of ▁the ▁South ▁Indian ▁Ocean . ▁Over ▁the ▁next ▁several ▁days , ▁the ▁low ▁slowly ▁dr ift ed ▁west wards ▁while ▁gradually ▁organ izing . ▁Early ▁on ▁February ▁ 2 9 , ▁R S MC ▁La ▁Re union ▁upgrad ed ▁to ▁storm ▁to ▁a ▁tropical ▁disturb ance ▁as ▁the ▁storm ▁organized ▁significantly . ▁Six ▁hours ▁later , ▁the ▁storm ▁was ▁upgrad ed ▁to ▁a ▁tropical ▁de pression , ▁as ▁it ▁continued ▁to ▁organ ize . ▁Late ▁on ▁February ▁ 2 9 , ▁the ▁J TW C ▁designated ▁the ▁system ▁as ▁Trop ical ▁Cy clone ▁ 1 5 S . ▁Several ▁hours ▁later , ▁Trop ical ▁De pression ▁ 1 2 ▁began ▁to ▁weak en ▁as ▁the ▁storm ▁began ▁encounter ing ▁wind ▁she ar . ▁On ▁March ▁ 3 , ▁the ▁storm ▁executed ▁a ▁cycl onic ▁loop , ▁before ▁turning ▁towards ▁the ▁east . ▁Late ▁on ▁the ▁same ▁day , ▁the ▁storm ▁weak ened ▁into ▁a ▁rem nant ▁low , ▁before ▁deg ener ating ▁into ▁a ▁weak ▁extr at rop ical ▁cy clone ▁shortly ▁afterwards . ▁ ▁Se vere ▁Trop ical ▁Storm ▁Ko ji – J oni ▁ ▁On ▁March ▁ 6 , ▁an ▁area ▁of ▁th under st orm s ▁that ▁T C W C ▁Per th ▁had ▁been ▁watching ▁since ▁March ▁ 3 , ▁became ▁a ▁tropical ▁low . ▁Later ▁on