WTPS52 PGTW 122100 WARNING ATCG MIL 18P SWP 150312210004 2015031218 18P NATHAN 005 02 045 01 SATL 035 T000 134S 1451E 055 R050 025 NE QD 025 SE QD 025 SW QD 025 NW QD R034 055 NE QD 055 SE QD 055 SW QD 055 NW QD T012 132S 1454E 060 R050 015 NE QD 015 SE QD 015 SW QD 015 NW QD R034 055 NE QD 050 SE QD 050 SW QD 055 NW QD T024 132S 1461E 065 R050 025 NE QD 025 SE QD 025 SW QD 025 NW QD R034 065 NE QD 060 SE QD 065 SW QD 065 NW QD T036 133S 1477E 070 R064 020 NE QD 020 SE QD 020 SW QD 020 NW QD R050 035 NE QD 030 SE QD 030 SW QD 035 NW QD R034 075 NE QD 065 SE QD 065 SW QD 075 NW QD T048 135S 1494E 075 R064 025 NE QD 025 SE QD 025 SW QD 025 NW QD R050 045 NE QD 040 SE QD 040 SW QD 045 NW QD R034 085 NE QD 075 SE QD 075 SW QD 085 NW QD T072 140S 1529E 085 R064 035 NE QD 035 SE QD 035 SW QD 035 NW QD R050 060 NE QD 055 SE QD 055 SW QD 060 NW QD R034 095 NE QD 085 SE QD 085 SW QD 095 NW QD T096 150S 1555E 075 T120 169S 1578E 065 AMP 120HR BECOMING EXTRATROPICAL SUBJ: TROPICAL CYCLONE 18P (NATHAN) WARNING NR 005 1. TROPICAL CYCLONE 18P (NATHAN) WARNING NR 005 02 ACTIVE TROPICAL CYCLONES IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 121800Z --- NEAR 13.4S 145.1E MOVEMENT PAST SIX HOURS - 045 DEGREES AT 01 KTS POSITION ACCURATE TO WITHIN 035 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 - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 13.4S 145.1E --- FORECASTS: 12 HRS, VALID AT: 130600Z --- 13.2S 145.4E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 015 NM NORTHEAST QUADRANT 015 NM SOUTHEAST QUADRANT 015 NM SOUTHWEST QUADRANT 015 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 090 DEG/ 03 KTS --- 24 HRS, VALID AT: 131800Z --- 13.2S 146.1E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 095 DEG/ 08 KTS --- 36 HRS, VALID AT: 140600Z --- 13.3S 147.7E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 095 DEG/ 08 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 141800Z --- 13.5S 149.4E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 100 DEG/ 09 KTS --- 72 HRS, VALID AT: 151800Z --- 14.0S 152.9E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 110 DEG/ 07 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 161800Z --- 15.0S 155.5E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 130 DEG/ 07 KTS --- 120 HRS, VALID AT: 171800Z --- 16.9S 157.8E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL --- REMARKS: 122100Z POSITION NEAR 13.4S 145.2E. TROPICAL CYCLONE 18P (NATHAN), LOCATED APPROXIMATELY 214 NM NORTH OF CAIRNS, AUSTRALIA, HAS TRACKED NORTHEASTWARD AT 01 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 121800Z IS 18 FEET. NEXT WARNINGS AT 130900Z AND 132100Z. FOR SIX-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 135S1450E 55 1815031212 135S1450E 55 1815031218 134S1451E 55 1815031218 134S1451E 55 NNNN