WTXS31 PGTW 221500 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 31P (THIRTYONE) WARNING NR 018A AMENDED// RMKS/ 1. TROPICAL CYCLONE 31P (THIRTYONE) WARNING NR 018A AMENDED 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 221200Z --- NEAR 10.0S 133.2E MOVEMENT PAST SIX HOURS - 290 DEGREES AT 08 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: 10.0S 133.2E --- FORECASTS: 12 HRS, VALID AT: 230000Z --- 9.3S 131.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 221500Z POSITION NEAR 9.8S 132.9E. 22APR25. TROPICAL CYCLONE 31P (THIRTYONE), LOCATED APPROXIMATELY 202 NM NORTHEAST OF DARWIN, AUSTRALIA, HAS TRACKED WEST- NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. AFTER RELEASE OF THE ORIGINAL WARNING NUMBER EIGHTEEN (WR 018), FURTHER SATELLITE ANALYSIS REVEALED SIGNIFICANTLY DECAYED CONVECTIVE STRUCTURE OF THE SYSTEM, WITH SURFACE WINDS BELOW WARNING THRESHOLD. THE PGTW DVORAK ESTIMATE IS NOW 1.5 AND MAJORITY OF THE DETERMINISTIC AND ENSEMBLE GUIDANCE AGREES ON FURTHER DECAY OF TC 31P. 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 221200Z IS 1007 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 221200Z IS 18 FEET. 2. JUSTIFICATION FOR AMENDMENT: FORECAST TRUNCATED TO 12 HOURS AND SYSTEM FINAL WARNED BASED ON 221230Z METOP-B ASCAT PASS AND THE ANIMATED SHORTWAVE INFRARED IMAGERY.// NNNN