** WTXS31 PGTW 252100 *** MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 04S WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 251800Z --- NEAR 13.7S 77.0E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 13.7S 77.0E --- FORECASTS: 12 HRS, VALID AT: 260600Z --- 14.1S 74.3E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 252100Z POSITION NEAR 13.8S 76.3E. TROPICAL CYCLONE (TC) 04S, LOCATED APPROXIMATELY 465 NM SOUTHEAST OF DIEGO GARCIA, HAS TRACKED WESTWARD AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY INDICATES WANING DEEP CONVECTION WHICH IS DECOUPLED NEARLY 100 NM TO THE WEST OF THE LOW LEVEL CIRCULATION CENTER. UPPER LEVEL ANALYSIS INDICATES AN ENVIRONMENT OF MODERATE VERTICAL WIND SHEAR. THIS UNFAVORABLE ENVIRONMENT IS FORECAST TO PERSIST AND THE SYSTEM WILL DISSIPATE OVER WATER. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 251800Z IS 12 FEET.//