WTPN31 PGTW 090900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL STORM 17W (SHANSHAN) WARNING NR 027 DOWNGRADED FROM TYPHOON 17W 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 090600Z --- NEAR 37.4N 141.7E MOVEMENT PAST SIX HOURS - 025 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 060 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 - 050 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 37.4N 141.7E --- FORECASTS: 12 HRS, VALID AT: 091800Z --- 39.3N 144.6E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 065 DEG/ 22 KTS --- 24 HRS, VALID AT: 100600Z --- 41.0N 149.9E 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 145 NM SOUTHEAST QUADRANT 140 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 075 DEG/ 29 KTS --- 36 HRS, VALID AT: 101800Z --- 42.2N 157.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 090900Z POSITION NEAR 37.9N 142.4E. TROPICAL STORM 17W (SHANSHAN), LOCATED APPROXIMATELY 120 NM NORTH-NORTHEAST OF NARITA AIRPORT, HAS TRACKED NORTH- NORTHEASTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090600Z IS 24 FEET. NEXT WARNINGS AT 091500Z, 092100Z, 100300Z AND 100900Z. REFER TO TROPICAL STORM 18W (YAGI) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// NNNN