WTPN52 PGTW 230900 WARNING ATCG MIL 21W NWP 210923084131 2021092306 21W TWENTYONE 004 02 310 13 SATL RADR 030 T000 143N 1102E 035 R034 090 NE QD 000 SE QD 000 SW QD 050 NW QD T012 154N 1080E 030 T024 159N 1054E 025 T036 159N 1031E 020 AMP 012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND 024HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND 036HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND SUBJ: TROPICAL STORM 21W (DIANMU) WARNING NR 004 1. TROPICAL STORM 21W (DIANMU) WARNING NR 004 UPGRADED FROM TROPICAL DEPRESSION 21W 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 230600Z --- NEAR 14.3N 110.2E MOVEMENT PAST SIX HOURS - 310 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND RADAR PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 000 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT REPEAT POSIT: 14.3N 110.2E --- FORECASTS: 12 HRS, VALID AT: 231800Z --- 15.4N 108.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 280 DEG/ 13 KTS --- 24 HRS, VALID AT: 240600Z --- 15.9N 105.4E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 270 DEG/ 11 KTS --- 36 HRS, VALID AT: 241800Z --- 15.9N 103.1E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 230900Z POSITION NEAR 14.6N 109.7E. 23SEP21. TROPICAL STORM 21W (DIANMU), LOCATED APPROXIMATELY 150 NM SOUTHEAST OF DA NANG, VIETNAM, HAS TRACKED NORTHWESTWARD AT 13 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 230600Z IS 12 FEET. NEXT WARNINGS AT 231500Z, 232100Z, 240300Z AND 240900Z. FOR SIX-HOURLY UPDATES. // 2121092100 114N1180E 15 2121092106 114N1175E 15 2121092112 114N1169E 15 2121092118 116N1163E 15 2121092200 119N1154E 15 2121092206 123N1143E 20 2121092212 128N1133E 25 2121092218 130N1124E 25 2121092300 135N1112E 30 2121092306 143N1102E 35 NNNN