####018001915#### WTPN31 PGTW 170300 SUBJ: TROPICAL STORM JELAWAT (18W) WARNING NR 001 1. TROPICAL STORM JELAWAT (18W) WARNING NR 001 UPGRADED FROM 91W INVEST 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 170000Z --- NEAR 7.8N 129.3E MOVEMENT PAST SIX HOURS - 280 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 240 NM NORTHWEST QUADRANT REPEAT POSIT: 7.8N 129.3E --- FORECASTS: 12 HRS, VALID AT: 171200Z --- 7.5N 127.8E MAX SUSTAINED WINDS - 035 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 290 DEG/ 16 KTS --- 24 HRS, VALID AT: 180000Z --- 8.5N 124.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 280 DEG/ 16 KTS --- 48 HRS, VALID AT: 190000Z --- 9.5N 118.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 170300Z POSITION NEAR 7.7N 128.9E. 17DEC23. TROPICAL STORM JELAWAT (18W), LOCATED APPROXIMATELY 636 NM SOUTHEAST OF MANILA, PHILIPPINES, HAS TRACKED WESTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 170000Z IS 15 FEET. NEXT WARNINGS AT 170900Z, 171500Z, 172100Z AND 180300Z.