WTPN32 PGTW 171500 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 19W (CHANTHU) WARNING NR 046// RMKS/ 1. TROPICAL STORM 19W (CHANTHU) WARNING NR 046 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 171200Z --- NEAR 33.8N 131.5E MOVEMENT PAST SIX HOURS - 080 DEGREES AT 20 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE, RADAR AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT REPEAT POSIT: 33.8N 131.5E --- FORECASTS: 12 HRS, VALID AT: 180000Z --- 34.3N 135.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 080 DEG/ 11 KTS --- 24 HRS, VALID AT: 181200Z --- 34.6N 138.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 36 HR POSIT: 090 DEG/ 08 KTS --- 36 HRS, VALID AT: 190000Z --- 34.6N 140.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL VECTOR TO 48 HR POSIT: 110 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 191200Z --- 34.1N 141.7E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 171500Z POSITION NEAR 33.9N 132.5E. 17SEP21. TROPICAL STORM 19W (CHANTHU), LOCATED APPROXIMATELY 42 NM SOUTHWEST OF IWAKUNI, JAPAN, HAS TRACKED EASTWARD AT 20 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 171200Z IS 16 FEET. NEXT WARNINGS AT 172100Z, 180300Z, 180900Z AND 181500Z. // NNNN