WTXS32 PGTW 180900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 029// RMKS/ 1. TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 029 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 180600Z --- NEAR 17.0S 112.2E MOVEMENT PAST SIX HOURS - 315 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 17.0S 112.2E --- FORECASTS: 12 HRS, VALID AT: 181800Z --- 17.1S 111.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 300 DEG/ 03 KTS --- 24 HRS, VALID AT: 190600Z --- 16.8S 111.4E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 180900Z POSITION NEAR 17.0S 112.1E. 18MAR24. TROPICAL CYCLONE 18S (EIGHTEEN), LOCATED APPROXIMATELY 336 NM NORTH-NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED NORTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. A 180220Z ASCAT-C SCATTEROMETRY IMAGE REVEALED 25-30 KTS IN THE SOUTHERN PERIPHERY OF THE LOW-LEVEL CIRCULATION CENTER (LLCC) WITH LIGHTER 15-20 KT WINDS AROUND THE NORTHERN PERIPHERY. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS THE OVERALL STRUCTURE OF THE SYSTEM TO BE DISORGANIZED. GLOBAL NUMERICAL MODEL GUIDANCE SUGGESTS THAT THE REMNANTS OF 18S MAY REINTENSIFY IF THE ENVIRONMENTAL CONDITIONS FOR GENESIS IMPROVE. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE AT 180600Z IS 997 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 180600Z IS 15 FEET.// NNNN