▁reports ▁that ▁tropical ▁storm s ▁Hal ong ▁and ▁Nak ri ▁( Ind ay ) ▁have ▁intens ified ▁into ▁severe ▁tropical ▁storm s . ▁ ▁August ▁August ▁ 1 ▁ 1 8 : 0 0 ▁UTC   — ▁The ▁J MA ▁reports ▁that ▁Se vere ▁Trop ical ▁Storm ▁Hal ong ▁has ▁intens ified ▁into ▁a ▁ty ph oon . ▁ ▁August ▁ 2 ▁ 0 6 : 0 0 ▁UTC   — ▁Hal ong ▁intens ifies ▁into ▁a ▁Category ▁ 4 ▁ty ph oon , ▁just ▁before ▁entering ▁the ▁P AR . ▁ 0 6 : 0 0 ▁UTC   — ▁The ▁J TW C ▁initi ates ▁advis ories ▁on ▁Trop ical ▁Storm ▁Nak ri ▁( Ind ay ) ▁and ▁assign s ▁it ▁the ▁design ation ▁ 1 2 W . ▁ 1 2 : 0 0 ▁UTC   — ▁The ▁J MA ▁reports ▁that ▁Se vere ▁Trop ical ▁Storm ▁Nak ri ▁( Ind ay ) ▁has ▁weak ened ▁into ▁a ▁tropical ▁storm . ▁ 1 8 : 0 0 ▁UTC   — ▁Due ▁to ▁the ▁explos ive ▁intens ification ▁of ▁Hal ong , ▁J TW C ▁up gr ades ▁it ▁to ▁a ▁Category   5 ▁super ▁ty ph oon . ▁ ▁August ▁ 3 ▁ 0 6 : 0 0 ▁UTC   — ▁The ▁J TW C ▁reports ▁that ▁Trop ical ▁Storm ▁Nak ri ▁has ▁weak ened ▁into ▁a ▁tropical ▁de pression . ▁ 2 1 : 0 0 ▁UTC   — ▁The ▁J TW C ▁issues ▁its ▁final ▁advis ory ▁on ▁Trop