MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL DEPRESSION 23W (TWENTYTHREE) WARNING NR 006 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 100000Z --- NEAR 18.4N 105.8E MOVEMENT PAST SIX HOURS - 290 DEGREES AT 13 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 DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND REPEAT POSIT: 18.4N 105.8E --- FORECASTS: 12 HRS, VALID AT: 101200Z --- 19.3N 102.2E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 290 DEG/ 18 KTS --- 24 HRS, VALID AT: 110000Z --- 20.5N 98.6E MAX SUSTAINED WINDS - 010 KT, GUSTS 020 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 100300Z POSITION NEAR 18.6N 104.9E. TROPICAL DEPRESSION 23W (TWENTYTHREE), LOCATED APPROXIMATELY 156 NM SOUTH OF HANOI, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY INDICATES THE LOW LEVEL CIRCULATION CENTER HAS MADE LANDFALL SOUTH OF VINH, VIETNAM, WITH THE BULK OF THE DEEP CONVECTION NOW OVER LAND. THE 100000Z OBSERVATION AT VINH SHOWED WINDS WERE 6 KNOTS FROM 110 DEGREES, WITH A MSLP OF 998.9 MB. THE INITIAL INTENSITY WAS MAINTAINED AT 30 KNOTS, BASED ON DVORAK CURRENT INTENSITY ESTIMATES PRIOR TO LANDFALL OF 25 TO 30 KNOTS. TD 23W WILL RAPIDLY WEAKEN OVER LAND AS IT CONTINUES TRACKING GENERALLY WEST-NORTHWESTWARD. 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.// NNNN NNNN