MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL DEPRESSION 21W (TWENTYONE) WARNING NR 003// RMKS/ 1. TROPICAL DEPRESSION 21W (TWENTYONE) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 170000Z --- NEAR 18.7N 129.5E MOVEMENT PAST SIX HOURS - 330 DEGREES AT 08 KTS POSITION ACCURATE TO WITHIN 045 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 REPEAT POSIT: 18.7N 129.5E --- FORECASTS: 12 HRS, VALID AT: 171200Z --- 19.1N 128.5E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 280 DEG/ 07 KTS --- 24 HRS, VALID AT: 180000Z --- 19.3N 127.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 36 HR POSIT: 270 DEG/ 05 KTS --- 36 HRS, VALID AT: 181200Z --- 19.3N 126.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 48 HR POSIT: 260 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 190000Z --- 19.1N 124.8E 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: 260 DEG/ 04 KTS --- 72 HRS, VALID AT: 200000Z --- 18.8N 123.2E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 170300Z POSITION NEAR 18.8N 129.2E. 17OCT19. TROPICAL DEPRESSION 21W (TWENTYONE), LOCATED APPROXIMATELY 547 NM EAST-NORTHEAST OF MANILA, PHILIPPINES, HAS TRACKED NORTH-NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 170000Z IS 10 FEET. NEXT WARNINGS AT 170900Z, 171500Z, 172100Z AND 180300Z. // NNNN NNNN