WTPN32 PGTW 211500 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 18W (EIGHTEEN) WARNING NR 004// RMKS/ 1. TROPICAL STORM 18W (EIGHTEEN) WARNING NR 004 UPGRADED FROM TROPICAL DEPRESSION 18W 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 211200Z --- NEAR 20.8N 108.8E MOVEMENT PAST SIX HOURS - 045 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND RADAR PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT REPEAT POSIT: 20.8N 108.8E --- FORECASTS: 12 HRS, VALID AT: 220000Z --- 21.1N 109.0E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 045 DEG/ 01 KTS --- 24 HRS, VALID AT: 221200Z --- 21.3N 109.2E 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 040 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 090 DEG/ 01 KTS --- 36 HRS, VALID AT: 230000Z --- 21.3N 109.5E 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 040 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 090 DEG/ 02 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 231200Z --- 21.3N 109.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 60 HR POSIT: 075 DEG/ 02 KTS --- 60 HRS, VALID AT: 240000Z --- 21.4N 110.3E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 065 DEG/ 03 KTS --- 72 HRS, VALID AT: 241200Z --- 21.6N 110.8E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 211500Z POSITION NEAR 20.9N 108.8E. 21AUG26. TROPICAL STORM 18W (EIGHTEEN), LOCATED APPROXIMATELY 163 NM EAST OF HANOI, VIETNAM, HAS TRACKED NORTHEASTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 211200Z IS 994 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 211200Z IS 12 FEET. NEXT WARNINGS AT 212100Z, 220300Z, 220900Z AND 221500Z. REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.// NNNN