WTXS51 PGTW 042100 WARNING ATCG MIL 18S SIO 210204202241 2021020418 18S EIGHTEEN 018 01 235 03 SATL 040 T000 248S 1131E 035 R034 015 NE QD 010 SE QD 055 SW QD 045 NW QD T012 253S 1127E 035 R034 000 NE QD 050 SE QD 050 SW QD 010 NW QD T024 263S 1126E 035 R034 000 NE QD 120 SE QD 080 SW QD 020 NW QD T036 277S 1128E 040 R034 020 NE QD 130 SE QD 110 SW QD 040 NW QD AMP 000HR BECOMING EXTRATROPICAL 012HR BECOMING EXTRATROPICAL 024HR BECOMING EXTRATROPICAL 036HR EXTRATROPICAL SUBJ: TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 018 1. TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 018 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 041800Z --- NEAR 24.8S 113.1E MOVEMENT PAST SIX HOURS - 235 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 040 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 BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT 010 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT REPEAT POSIT: 24.8S 113.1E --- FORECASTS: 12 HRS, VALID AT: 050600Z --- 25.3S 112.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 185 DEG/ 05 KTS --- 24 HRS, VALID AT: 051800Z --- 26.3S 112.6E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 175 DEG/ 07 KTS --- 36 HRS, VALID AT: 060600Z --- 27.7S 112.8E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT --- REMARKS: 042100Z POSITION NEAR 24.9S 113.0E. 04FEB21. TROPICAL CYCLONE 18S (EIGHTEEN), LOCATED APPROXIMATELY 160 NM SOUTH-SOUTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED SOUTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 041800Z IS 15 FEET. NEXT WARNINGS AT 050300Z, 050900Z, 051500Z AND 052100Z. // 1821012818 159S1266E 15 1821012900 164S1261E 15 1821012906 168S1258E 20 1821012912 172S1256E 20 1821012918 176S1254E 20 1821013000 179S1251E 25 1821013006 183S1246E 30 1821013012 187S1240E 30 1821013018 192S1235E 30 1821013100 201S1229E 30 1821013106 210S1223E 30 1821013112 214S1211E 30 1821013118 213S1202E 30 1821020100 207S1194E 30 1821020106 206S1190E 30 1821020112 211S1181E 30 1821020118 215S1171E 30 1821020200 222S1163E 30 1821020206 229S1157E 30 1821020212 236S1151E 30 1821020218 240S1145E 30 1821020300 238S1144E 30 1821020306 239S1143E 30 1821020312 238S1144E 30 1821020318 238S1148E 30 1821020400 243S1143E 30 1821020406 244S1137E 35 1821020412 246S1134E 35 1821020418 248S1131E 35 NNNN