WTPN32 PGTW 280300 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TYPHOON 18W (NORU) WARNING NR 025// RMKS/ 1. TYPHOON 18W (NORU) WARNING NR 025 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 280000Z --- NEAR 16.0N 107.8E MOVEMENT PAST SIX HOURS - 270 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 105 NM NORTHWEST QUADRANT REPEAT POSIT: 16.0N 107.8E --- FORECASTS: 12 HRS, VALID AT: 281200Z --- 16.2N 105.8E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 275 DEG/ 10 KTS --- 24 HRS, VALID AT: 290000Z --- 16.4N 103.8E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 280 DEG/ 09 KTS --- 36 HRS, VALID AT: 291200Z --- 16.7N 101.9E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 280300Z POSITION NEAR 16.1N 107.3E. 28SEP22. TYPHOON 18W (NORU), LOCATED APPROXIMATELY 29 NM WEST OF DA NANG, VIETNAM, HAS TRACKED WESTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. ANIMATED RADAR DATA CONFIRMS THAT TY 18W MADE LANDFALL JUST SOUTH OF DA NANG, VIETNAM AT 272100Z AND HAS SINCE RAPIDLY MOVED INLAND. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS DEEP CONVECTION STILL PERSISTING, HOWEVER, IS INCREASINGLY BEING SHEARED TO THE SOUTHWEST. THE MSI, ANIMATED RADAR DATA, AND ANALYSIS OF WIND OBSERVATIONS ACROSS THE REGION PROVIDED HIGH CONFIDENCE TO THE INTIAL POSITION. THE INITIAL INTENSITY OF 80 KNOTS IS ASSESSED WITH MEDIUM CONFIDENCE BASED ON AN RJTD OVER LAND DVORAK CURRENT INTENSITY ESTIMATE OF T5.0, AND MSLP OBSERVATIONS SURROUNDING THE CENTER REPORTING 986MB. THE SYSTEM IS FORECASTED TO CONTINUE MOVING RAPIDLY INLAND TO THE WEST-NORTHWEST ALONG THE SOUTHERN PERIPHERY OF A DEEP-LAYER SUBTROPICAL RIDGE (STR) TO THE NORTH AND ULTIMATELY DISSIPATING OVER SOUTHEAST ASIA NO LATER THAN TAU 36. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOIN TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. REFER TO TROPICAL STORM 19W (KULAP) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES. // NNNN