elle ▁to ▁d eter ior ate ▁on ▁January   7 . ▁The ▁center ▁passed ▁near ▁Maur it ius ▁on ▁January   8 ▁as ▁a ▁tropical ▁de pression . ▁Two ▁days ▁later , ▁a ▁cold ▁front ▁ste ered ▁the ▁system ▁to ▁the ▁sout heast , ▁absor bing ▁it ▁after ▁Christ elle ▁became ▁extr at rop ical ▁on ▁January   1 1 . ▁ ▁Both ▁Bent ha ▁and ▁Christ elle ▁brought ▁g ust y ▁wind s ▁and ▁ra inf all ▁to ▁Maur it ius , ▁and ▁caused ▁Ré union ▁to ▁be ▁under ▁a ▁cy clone ▁watch ▁for ▁five ▁days . ▁The ▁system ▁also ▁produced ▁ra inf all ▁and ▁land sl ides ▁in ▁Mad agas car . ▁ ▁Mod er ate ▁Trop ical ▁Storm ▁Bent ha ▁ ▁The ▁same ▁broad ▁system ▁that ▁spawn ed ▁Christ elle ▁also ▁produced ▁an ▁area ▁of ▁con ve ction ▁south west ▁of ▁Diego ▁Gar cia ▁toward ▁the ▁end ▁of ▁December . ▁On ▁January   1 , ▁the ▁con ve ction ▁began ▁organ izing , ▁a ided ▁by ▁an ▁ant icy clone ▁al o ft , ▁and ▁it ▁became ▁a ▁tropical ▁de pression ▁on ▁the ▁next ▁day . ▁The ▁system ▁quickly ▁intens ified ▁into ▁Trop ical ▁Storm ▁Bent ha ▁on ▁January   3 ▁while ▁moving ▁generally ▁south west ward . ▁Also ▁on ▁that ▁day , ▁the ▁J TW C ▁class ified ▁it ▁as ▁Trop ical ▁Cy clone ▁ 0 6 S . ▁On ▁January   4 , ▁Bent ha ▁att ained ▁peak ▁wind s ▁of ▁ 8 5   km / h