WTPS52 PGTW 042100 WARNING ATCG MIL 17P SWP 180404200124 2018040418 17P IRIS 023 01 125 03 SATL 045 T000 197S 1517E 045 R034 090 NE QD 125 SE QD 105 SW QD 085 NW QD T012 198S 1520E 045 R034 055 NE QD 115 SE QD 120 SW QD 045 NW QD T024 197S 1521E 040 R034 025 NE QD 170 SE QD 120 SW QD 055 NW QD T036 194S 1517E 040 R034 000 NE QD 145 SE QD 125 SW QD 030 NW QD T048 189S 1512E 035 R034 015 NE QD 105 SE QD 115 SW QD 005 NW QD T072 178S 1506E 030 AMP 048HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 072HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER SUBJ: TROPICAL CYCLONE 17P (IRIS) WARNING NR 023 1. TROPICAL CYCLONE 17P (IRIS) WARNING NR 023 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 041800Z --- NEAR 19.7S 151.7E MOVEMENT PAST SIX HOURS - 125 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 045 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 125 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT REPEAT POSIT: 19.7S 151.7E --- FORECASTS: 12 HRS, VALID AT: 050600Z --- 19.8S 152.0E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 045 DEG/ 01 KTS --- 24 HRS, VALID AT: 051800Z --- 19.7S 152.1E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 310 DEG/ 02 KTS --- 36 HRS, VALID AT: 060600Z --- 19.4S 151.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 145 NM SOUTHEAST QUADRANT 125 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 315 DEG/ 03 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 061800Z --- 18.9S 151.2E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 005 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 335 DEG/ 03 KTS --- 72 HRS, VALID AT: 071800Z --- 17.8S 150.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 042100Z POSITION NEAR 19.7S 151.8E. TROPICAL CYCLONE 17P (IRIS), LOCATED APPROXIMATELY 376 NM EAST- SOUTHEAST OF CAIRNS, AUSTRALIA, HAS TRACKED SOUTHEASTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 041800Z IS 14 FEET. NEXT WARNINGS AT 050300Z, 050900Z, 051500Z AND 052100Z. // 1718032112 115S1627E 15 1718032118 117S1631E 20 1718032200 119S1634E 20 1718032206 121S1636E 20 1718032212 123S1637E 25 1718032218 125S1637E 25 1718032300 128S1636E 30 1718032306 131S1633E 30 1718032312 135S1627E 30 1718032318 139S1619E 30 1718032400 140S1605E 30 1718032406 142S1599E 30 1718032412 143S1595E 30 1718032418 144S1592E 35 1718032500 146S1589E 35 1718032506 150S1586E 35 1718032512 155S1585E 35 1718032518 160S1583E 35 1718032600 166S1581E 35 1718032606 173S1580E 35 1718032612 180S1580E 35 1718032618 186S1581E 35 1718032700 195S1582E 35 1718032706 202S1583E 30 1718032712 207S1586E 25 1718032718 215S1589E 25 1718032800 226S1593E 30 1718032806 228S1591E 30 1718032812 228S1595E 30 1718032818 230S1591E 30 1718032900 224S1564E 35 1718032906 210S1556E 35 1718032912 200S1554E 35 1718032918 197S1552E 35 1718033000 192S1541E 35 1718033006 185S1535E 35 1718033012 176S1529E 30 1718033018 170S1517E 30 1718033100 161S1509E 30 1718033106 156S1502E 30 1718033112 151S1498E 30 1718033118 147S1492E 30 1718040100 151S1489E 30 1718040106 156S1491E 30 1718040112 164S1493E 30 1718040118 170S1495E 30 1718040200 168S1487E 35 1718040206 169S1488E 35 1718040212 170S1488E 40 1718040218 170S1489E 45 1718040300 170S1490E 45 1718040306 178S1497E 45 1718040312 185S1499E 45 1718040318 190S1502E 50 1718040318 190S1502E 50 1718040400 192S1505E 55 1718040400 192S1505E 55 1718040406 193S1510E 55 1718040406 193S1510E 55 1718040412 195S1514E 45 1718040418 197S1517E 45