WTXS31 PGTW 252100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 04S (CHENGE) WARNING NR 020// RMKS/ 1. TROPICAL CYCLONE 04S (CHENGE) WARNING NR 020 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 251800Z --- NEAR 8.1S 49.9E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 06 KTS POSITION ACCURATE TO WITHIN 020 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: 8.1S 49.9E --- FORECASTS: 12 HRS, VALID AT: 260600Z --- 7.7S 48.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 252100Z POSITION NEAR 8.0S 49.5E. 25OCT25. TROPICAL CYCLONE (TC) 04S (CHENGE), LOCATED APPROXIMATELY 635 NM EAST OF DAR ES SALAAM, TANZANIA, HAS TRACKED WESTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL IMAGERY REVEALS A SHALLOW AND FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER AS DEEP CONVECTION HAS COMPLETELY COLLAPSED OVER THE LAST 12 HOURS. THE CURRENT ENVIRONMENT IS HIGHLY UNFAVORABLE WITH VERTICAL WIND SHEAR ABOVE 30KTS AND STRAIGHT-LINE FLOW ALOFT. OVER THE NEXT 12 HOURS, THE REMNANTS OF TC 04S WILL CONTINUE TO DRIFT WEST- NORTHWESTWARD AS THE SYSTEM CONTINUES TO WEAKEN IN AN ADVERSE ENVIRONMENT. DETERMINISTIC MODEL GUIDANCE IS SUPPORTIVE OF THE TRACK AND IS IN STRONG LINEAR AGREEMENT. THE INTENSITY GUIDANCE VARIES SLIGHTLY BETWEEN STAGNATION AT 30KTS OVER THE NEXT 12 HOURS OR CONTINUED WEAKENING. EITHER WAY, THE GUIDANCE DOES NOT INDICATE RE-INTENSIFICATION. 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 251800Z IS 1003 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 251800Z IS 12 FEET.// NNNN