0 0 ▁UTC   — ▁The ▁J MA ▁and ▁J TW C ▁start ▁to ▁monitor ▁Trop ical ▁De pression ▁Sen i ang . ▁ 1 2 : 0 0 ▁UTC   — ▁The ▁J MA ▁reports ▁that ▁Trop ical ▁De pression ▁Sen i ang ▁has ▁intens ified ▁into ▁a ▁tropical ▁storm . ▁ 2 1 : 0 0 ▁UTC   — ▁The ▁J TW C ▁up gr ades ▁Sen i ang ▁to ▁a ▁tropical ▁storm . ▁ ▁December ▁ 2 9 ▁ 0 0 : 0 0 ▁UTC   — ▁According ▁to ▁the ▁J MA , ▁Sen i ang ▁intens ifies ▁into ▁Trop ical ▁Storm ▁J ang mi . ▁ 1 8 : 0 0 ▁UTC   — ▁The ▁J MA ▁reports ▁that ▁Trop ical ▁Storm ▁J ang mi ▁( S eni ang ) ▁has ▁reached ▁its ▁peak ▁intensity , ▁with ▁ 1 0 - min ute ▁sust ained ▁wind spe eds ▁of ▁ 4 0 ▁k ts . ▁ ▁December ▁ 3 0 ▁ 1 2 : 0 0 ▁UTC   — ▁The ▁J MA ▁reports ▁that ▁Trop ical ▁Storm ▁J ang mi ▁( S eni ang ) ▁has ▁weak ened ▁into ▁a ▁tropical ▁de pression . ▁ ▁January ▁ 1 , ▁ 2 0 1 5 ▁ 1 2 : 0 0 ▁UTC   — ▁Trop ical ▁De pression ▁J ang mi ▁( S eni ang ) ▁makes ▁land fall ▁in ▁the ▁Malays ian ▁state ▁of ▁Sab ah ▁on ▁the ▁island ▁of ▁Bor neo . ▁ 1 8 : 0 0