MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/152051OCT2019// AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.// RMKS/ 1. TROPICAL DEPRESSION 21W (TWENTYONE) WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 161200Z --- NEAR 17.5N 129.9E MOVEMENT PAST SIX HOURS - 285 DEGREES AT 11 KTS POSITION ACCURATE TO WITHIN 040 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 REPEAT POSIT: 17.5N 129.9E --- FORECASTS: 12 HRS, VALID AT: 170000Z --- 18.2N 128.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 280 DEG/ 08 KTS --- 24 HRS, VALID AT: 171200Z --- 18.5N 126.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 36 HR POSIT: 270 DEG/ 06 KTS --- 36 HRS, VALID AT: 180000Z --- 18.5N 125.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 48 HR POSIT: 260 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 181200Z --- 18.3N 123.8E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 72 HR POSIT: 255 DEG/ 05 KTS --- 72 HRS, VALID AT: 191200Z --- 17.8N 121.8E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 161500Z POSITION NEAR 17.7N 129.5E. 16OCT19. TROPICAL DEPRESSION 21W (TWENTYONE), LOCATED APPROXIMATELY 542 NM EAST-NORTHEAST OF MANILA, PHILIPPINES, HAS TRACKED WEST-NORTHWESTWARD AT 11 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 161200Z IS 8 FEET. NEXT WARNINGS AT 162100Z, 170300Z, 170900Z AND 171500Z. 2. THIS CANCELS AND SUPERSEDES REF A (WTPN21 PGTW 152100).// NNNN NNNN