WTPS52 PGTW 220900 WARNING ATCG MIL 18P SWP 150322080832 2015032206 18P NATHAN 024 02 295 09 SATL RADR 025 T000 122S 1359E 060 T012 115S 1348E 065 T024 112S 1339E 065 R034 055 NE QD 055 SE QD 065 SW QD 065 NW QD T036 114S 1331E 055 R034 050 NE QD 050 SE QD 060 SW QD 060 NW QD T048 120S 1323E 045 R034 050 NE QD 050 SE QD 060 SW QD 060 NW QD T072 132S 1309E 035 T096 136S 1290E 035 T120 137S 1265E 040 AMP SUBJ: TROPICAL CYCLONE 18P (NATHAN) WARNING NR 024 1. TROPICAL CYCLONE 18P (NATHAN) WARNING NR 023 02 ACTIVE TROPICAL CYCLONES IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 211800Z --- NEAR 13.1S 137.5E MOVEMENT PAST SIX HOURS - 275 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT 010 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT REPEAT POSIT: 13.1S 137.5E --- FORECASTS: 12 HRS, VALID AT: 220600Z --- 12.2S 136.0E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 300 DEG/ 06 KTS --- 24 HRS, VALID AT: 221800Z --- 11.6S 134.9E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 285 DEG/ 04 KTS --- 36 HRS, VALID AT: 230600Z --- 11.4S 134.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 260 DEG/ 03 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 231800Z --- 11.5S 133.6E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 245 DEG/ 02 KTS --- 72 HRS, VALID AT: 241800Z --- 11.9S 132.8E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 96 HR POSIT: 215 DEG/ 05 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 251800Z --- 13.4S 131.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 212100Z POSITION NEAR 12.9S 137.1E. TROPICAL CYCLONE 18P (NATHAN), LOCATED APPROXIMATELY 388 NM EAST OF DARWIN, AUSTRALIA, HAS TRACKED WESTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 211800Z IS 14 FEET. NEXT WARNINGS AT 220900Z AND 222100Z. FOR TWELVE-HOURLY UPDATES.// 1815030918 123S1505E 25 1815031000 128S1496E 30 1815031006 132S1488E 35 1815031012 134S1481E 40 1815031018 136S1475E 45 1815031100 138S1468E 45 1815031106 139S1464E 45 1815031112 138S1459E 45 1815031118 138S1456E 55 1815031118 138S1456E 55 1815031200 139S1453E 55 1815031200 139S1453E 55 1815031206 138S1451E 55 1815031206 138S1451E 55 1815031212 137S1450E 55 1815031212 137S1450E 55 1815031218 135S1449E 55 1815031218 135S1449E 55 1815031300 133S1448E 55 1815031300 133S1448E 55 1815031306 131S1449E 55 1815031306 131S1449E 55 1815031312 131S1451E 55 1815031312 131S1451E 55 1815031318 131S1453E 50 1815031318 131S1453E 50 1815031400 131S1456E 45 1815031406 131S1462E 45 1815031412 132S1469E 40 1815031418 132S1477E 40 1815031500 134S1485E 45 1815031506 135S1491E 40 1815031512 136S1495E 45 1815031518 137S1498E 50 1815031600 139S1499E 55 1815031600 139S1499E 55 1815031606 141S1499E 55 1815031606 141S1499E 55 1815031612 143S1499E 55 1815031612 143S1499E 55 1815031618 145S1499E 40 1815031700 146S1498E 45 1815031706 147S1497E 45 1815031712 148S1496E 40 1815031718 148S1495E 45 1815031800 148S1493E 50 1815031806 148S1491E 65 1815031806 148S1491E 65 1815031812 148S1488E 75 1815031812 148S1488E 75 1815031812 148S1488E 75 1815031818 147S1482E 80 1815031818 147S1482E 80 1815031818 147S1482E 80 1815031900 147S1475E 85 1815031900 147S1475E 85 1815031900 147S1475E 85 1815031906 147S1469E 90 1815031906 147S1469E 90 1815031906 147S1469E 90 1815031912 147S1462E 90 1815031912 147S1462E 90 1815031912 147S1462E 90 1815031918 147S1450E 90 1815031918 147S1450E 90 1815031918 147S1450E 90 1815032000 146S1441E 75 1815032000 146S1441E 75 1815032000 146S1441E 75 1815032006 145S1432E 50 1815032006 145S1432E 50 1815032012 143S1423E 45 1815032018 140S1415E 40 1815032100 137S1403E 40 1815032106 137S1393E 40 1815032112 132S1384E 50 1815032118 131S1375E 55 1815032118 131S1375E 55