4   h ours ▁after ▁att aining ▁its ▁peak ▁wind s . ▁Despite ▁the ▁notable ▁weak ening , ▁the ▁structure ▁of ▁the ▁storm ▁remained ▁relatively ▁int act ▁as ▁it ▁moved ▁over ▁the ▁Sul u ▁Sea . ▁Through out ▁the ▁day , ▁the ▁system ▁briefly ▁sp ed ▁up ▁before ▁rapidly ▁slow ing ▁near ▁the ▁South ▁China ▁Sea . ▁On ▁October   2 0 , ▁decre ased ▁interaction ▁with ▁land ▁allowed ▁Kate ▁to ▁re - att ain ▁ty ph oon ▁status ▁just ▁before ▁passing ▁over ▁Bus u anga ▁Island . ▁Cont inu ing ▁its ▁north west ▁track , ▁the ▁ty ph oon ▁slowly ▁intens ified ▁and ▁re develop ed ▁a ▁ 3 7   mi ▁( 2 3   mi ) ▁wide ▁eye . ▁Late ▁on ▁October   2 1 , ▁the ▁J TW C ▁ass essed ▁the ▁storm ▁to ▁have ▁re - att ained ▁Category   4 ▁intensity ; ▁however , ▁post - st orm ▁analysis ▁indicated ▁that ▁sust ained ▁wind s ▁did ▁not ▁exceed ▁ 1 9 5   km / h ▁( 1 2 5   m ph ). ▁The ▁following ▁day , ▁a ▁r idge ▁to ▁the ▁north ▁of ▁Kate ▁prevent ed ▁the ▁system ▁from ▁tracking ▁further ▁north ▁and ▁prompt ed ▁a ▁west - s outh west ward ▁track . ▁ ▁Grad ual ▁weak ening ▁took ▁place ▁over ▁the ▁following ▁several ▁days ▁as ▁Kate ▁slowly ▁ne ared ▁the ▁Ind och ina ▁coast line . ▁By ▁October   2 4 , ▁wind s ▁had ▁decre ased ▁below ▁ 1 5 5  