WTIO31 PGTW 270300 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 04B (SENYAR) WARNING NR 007// RMKS/ 1. TROPICAL CYCLONE 04B (SENYAR) WARNING NR 007 02 ACTIVE TROPICAL CYCLONES IN NORTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 270000Z --- NEAR 3.6N 100.4E MOVEMENT PAST SIX HOURS - 090 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 3.6N 100.4E --- FORECASTS: 12 HRS, VALID AT: 271200Z --- 3.7N 101.2E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 270300Z POSITION NEAR 3.6N 100.6E. 27NOV25. TROPICAL CYCLONE 04B (SENYAR), LOCATED APPROXIMATELY 572 NM SOUTHWEST OF HO CHI MINH CITY, VIETNAM, HAS TRACKED EASTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTI-SPECTRAL IMAGERY DEPICTS TROPICAL CYCLONE (TC) 04B WITH A PARTIALLY OBSCURED LOW-LEVEL CIRCULATION CENTER WITH ASSOCIATED SPORATIC AND SHORT-LIVED FLARING CONVECTION THROUGHOUT THE BAY OF MALACCA. ENVIRONMENTAL ANALYSIS INDICATES THAT TROPICAL CYCLONE 04B IS IN AN UNFAVORABLE ENVIRONMENT, CHARACTERIZED BY HIGH VERTICAL WIND SHEAR (20-25 KTS) AND INCREASED FRICTIONAL IMPACTS DUE TO LAND INTERACTION // END PART 01 //