WTXS51 PGTW 280900 WARNING ATCG MIL 21S SIO 180428080401 2018042806 21S TWENTYONE 001 01 245 18 SATL 060 T000 089S 0925E 035 R034 025 NE QD 135 SE QD 000 SW QD 000 NW QD T012 100S 0902E 045 R034 070 NE QD 120 SE QD 055 SW QD 030 NW QD T024 114S 0879E 055 R050 020 NE QD 045 SE QD 030 SW QD 025 NW QD R034 075 NE QD 160 SE QD 085 SW QD 045 NW QD T036 128S 0862E 060 R050 025 NE QD 050 SE QD 040 SW QD 025 NW QD R034 090 NE QD 180 SE QD 110 SW QD 050 NW QD T048 143S 0855E 065 R064 000 NE QD 025 SE QD 000 SW QD 000 NW QD R050 050 NE QD 050 SE QD 040 SW QD 030 NW QD R034 110 NE QD 205 SE QD 125 SW QD 055 NW QD T072 167S 0851E 055 R050 045 NE QD 055 SE QD 025 SW QD 025 NW QD R034 090 NE QD 220 SE QD 090 SW QD 045 NW QD T096 195S 0863E 040 R034 100 NE QD 270 SE QD 120 SW QD 080 NW QD T120 218S 0878E 030 AMP 096HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 120HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER SUBJ: TROPICAL CYCLONE 21S (TWENTYONE) WARNING NR 001 1. TROPICAL CYCLONE 21S (TWENTYONE) WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 280600Z --- NEAR 8.9S 92.5E MOVEMENT PAST SIX HOURS - 245 DEGREES AT 18 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT 135 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT REPEAT POSIT: 8.9S 92.5E --- FORECASTS: 12 HRS, VALID AT: 281800Z --- 10.0S 90.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 240 DEG/ 13 KTS --- 24 HRS, VALID AT: 290600Z --- 11.4S 87.9E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 230 DEG/ 11 KTS --- 36 HRS, VALID AT: 291800Z --- 12.8S 86.2E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 180 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 205 DEG/ 08 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 300600Z --- 14.3S 85.5E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 000 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 205 NM SOUTHEAST QUADRANT 125 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 190 DEG/ 06 KTS --- 72 HRS, VALID AT: 010600Z --- 16.7S 85.1E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 160 DEG/ 08 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 020600Z --- 19.5S 86.3E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 270 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 120 HR POSIT: 150 DEG/ 07 KTS --- 120 HRS, VALID AT: 030600Z --- 21.8S 87.8E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 280900Z POSITION NEAR 9.2S 91.9E. TROPICAL CYCLONE 21S (TWENTYONE), LOCATED APPROXIMATELY 1193 NM EAST OF DIEGO GARCIA, HAS TRACKED WEST-SOUTHWESTWARD AT 18 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z IS 12 FEET. NEXT WARNINGS AT 281500Z, 282100Z, 290300Z AND 290900Z. // 2118042618 69S 988E 15 2118042700 71S 982E 15 2118042706 73S 976E 20 2118042712 74S 970E 25 2118042718 76S 958E 25 2118042800 82S 942E 30 2118042806 89S 925E 35 NNNN