WTPN32 PGTW 230900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 18W (NARRA) WARNING NR 011// RMKS/ 1. TROPICAL STORM 18W (NARRA) WARNING NR 011 03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 230600Z --- NEAR 20.6N 108.1E MOVEMENT PAST SIX HOURS - 135 DEGREES AT 01 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT REPEAT POSIT: 20.6N 108.1E --- FORECASTS: 12 HRS, VALID AT: 231800Z --- 20.3N 108.1E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 02 KTS --- 24 HRS, VALID AT: 240600Z --- 19.9N 108.1E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 110 DEG/ 01 KTS --- 36 HRS, VALID AT: 241800Z --- 19.8N 108.4E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 48 HR POSIT: 060 DEG/ 03 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 250600Z --- 20.1N 109.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 60 HR POSIT: 035 DEG/ 05 KTS --- 60 HRS, VALID AT: 251800Z --- 20.9N 109.6E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 72 HR POSIT: 005 DEG/ 05 KTS --- 72 HRS, VALID AT: 260600Z --- 21.8N 109.7E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 230900Z POSITION NEAR 20.5N 108.1E. 23AUG26. TROPICAL STORM 18W (NARRA), LOCATED APPROXIMATELY 126 NM EAST OF HANOI, VIETNAM, HAS TRACKED SOUTHEASTWARD AT 01 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 230600Z IS 993 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 230600Z IS 12 FEET. NEXT WARNINGS AT 231500Z, 232100Z, 240300Z AND 240900Z. REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 PGTW) FOR SIX- HOURLY UPDATES. REFER TO TROPICAL DEPRESSION 19W (NINETEEN) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY UPDATES.// NNNN