WTPN52 PGTW 081500 WARNING ATCG MIL 18W NWP 150908131733 2015090812 18W ETAU 008 02 360 21 SATL 060 T000 312N 1383E 045 R034 055 NE QD 050 SE QD 045 SW QD 055 NW QD T012 348N 1371E 050 T024 374N 1353E 040 R034 040 NE QD 040 SE QD 035 SW QD 040 NW QD T036 383N 1341E 030 T048 399N 1346E 020 AMP 024HR BECOMING EXTRATROPICAL 036HR BECOMING EXTRATROPICAL 048HR EXTRATROPICAL SUBJ: TROPICAL STORM 18W (ETAU) WARNING NR 008 1. TROPICAL STORM 18W (ETAU) WARNING NR 008 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 081200Z --- NEAR 31.2N 138.3E MOVEMENT PAST SIX HOURS - 360 DEGREES AT 21 KTS POSITION ACCURATE TO WITHIN 060 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 - 055 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 31.2N 138.3E --- FORECASTS: 12 HRS, VALID AT: 090000Z --- 34.8N 137.1E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 330 DEG/ 15 KTS --- 24 HRS, VALID AT: 091200Z --- 37.4N 135.3E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 315 DEG/ 07 KTS --- 36 HRS, VALID AT: 100000Z --- 38.3N 134.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 48 HR POSIT: 015 DEG/ 08 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 101200Z --- 39.9N 134.6E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 081500Z POSITION NEAR 32.1N 138.0E. TROPICAL STORM 18W (ETAU), LOCATED APPROXIMATELY 256 NM SOUTH- SOUTHWEST OF YOKOSUKA, JAPAN, HAS TRACKED NORTHWARD AT 21 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081200Z IS 15 FEET. NEXT WARNINGS AT 082100Z, 090300Z, 090900Z AND 091500Z. REFER TO HURRICANE 03C (KILO) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.// 1815090512 179N1415E 15 1815090518 186N1404E 15 1815090600 195N1396E 20 1815090606 204N1393E 20 1815090612 212N1392E 25 1815090618 221N1390E 30 1815090700 229N1386E 30 1815090706 238N1386E 30 1815090712 247N1385E 35 1815090718 264N1385E 40 1815090800 277N1382E 50 1815090806 291N1383E 45 1815090812 312N1383E 45 NNNN