WTXS52 PGTW 092100 WARNING ATCG MIL 15S SIO 170409202336 2017040918 15S ERNIE 008 01 255 12 SATL 040 T000 181S 1053E 055 R050 035 NE QD 045 SE QD 040 SW QD 025 NW QD R034 080 NE QD 100 SE QD 090 SW QD 055 NW QD T012 189S 1029E 040 R034 045 NE QD 080 SE QD 060 SW QD 030 NW QD T024 198S 1008E 030 AMP 012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER SUBJ: TROPICAL CYCLONE 15S (ERNIE) WARNING NR 008 1. TROPICAL CYCLONE 15S (ERNIE) WARNING NR 008 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 091800Z --- NEAR 18.1S 105.3E MOVEMENT PAST SIX HOURS - 255 DEGREES AT 12 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 - 035 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 18.1S 105.3E --- FORECASTS: 12 HRS, VALID AT: 100600Z --- 18.9S 102.9E 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 - 045 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 245 DEG/ 11 KTS --- 24 HRS, VALID AT: 101800Z --- 19.8S 100.8E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 092100Z POSITION NEAR 18.3S 104.7E. TROPICAL CYCLONE 15S (ERNIE), LOCATED APPROXIMATELY 556 NM WEST- NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091800Z IS 20 FEET. NEXT WARNINGS AT 100900Z. // 1517040418 114S1147E 15 1517040500 116S1134E 15 1517040506 119S1123E 15 1517040512 122S1116E 25 1517040518 125S1112E 25 1517040600 129S1110E 30 1517040606 133S1108E 35 1517040612 138S1107E 35 1517040618 145S1105E 40 1517040700 149S1104E 65 1517040700 149S1104E 65 1517040706 154S1103E 95 1517040706 154S1103E 95 1517040706 154S1103E 95 1517040712 158S1104E 105 1517040712 158S1104E 105 1517040712 158S1104E 105 1517040718 159S1104E 130 1517040718 159S1104E 130 1517040718 159S1104E 130 1517040800 162S1103E 110 1517040800 162S1103E 110 1517040800 162S1103E 110 1517040806 166S1100E 95 1517040806 166S1100E 95 1517040806 166S1100E 95 1517040812 167S1095E 90 1517040812 167S1095E 90 1517040812 167S1095E 90 1517040818 168S1089E 90 1517040818 168S1089E 90 1517040818 168S1089E 90 1517040900 170S1083E 95 1517040900 170S1083E 95 1517040900 170S1083E 95 1517040906 174S1076E 85 1517040906 174S1076E 85 1517040906 174S1076E 85 1517040912 178S1065E 70 1517040912 178S1065E 70 1517040912 178S1065E 70 1517040918 181S1053E 55 1517040918 181S1053E 55