SUBJ: TROPICAL CYCLONE WARNING WTPN32 PGTW 300900 1. TROPICAL STORM 21W (MARIA) WARNING NR 010 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 300600Z9 --- NEAR 18.1N0 115.1E8 MOVEMENT PAST SIX HOURS - 240 DEGREES AT 02 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT RADIUS OF 035 KT WINDS - 045 NM EAST SEMICIRCLE 035 NM ELSEWHERE REPEAT POSIT: 18.1N0 115.1E8 --- FORECASTS: 12 HRS, VALID AT: 301800Z2 --- 19.3N3 115.1E8 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT RADIUS OF 035 KT WINDS - 045 NM EAST SEMICIRCLE 035 NM ELSEWHERE VECTOR TO 24 HR POSIT: 025 DEG/ 08 KTS --- 24 HRS, VALID AT: 310600Z0 --- 20.8N0 115.9E6 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 050 NM EAST SEMICIRCLE 040 NM ELSEWHERE VECTOR TO 36 HR POSIT: 355 DEG/ 09 KTS --- 36 HRS, VALID AT: 311800Z3 --- 22.5N9 115.7E4 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 050 NM EAST SEMICIRCLE OVER WATER 040 NM ELSEWHERE OVER WATER VECTOR TO 48 HR POSIT: 350 DEG/ 09 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 010600Z7 --- 24.2N8 115.4E1 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 340 DEG/ 09 KTS --- 72 HRS, VALID AT: 020600Z8 --- 27.7N6 114.1E7 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 300900Z2 POSITION NEAR 18.4N3 115.1E8. TROPICAL STORM (TS) 21W (MARIA), LOCATED APPROXIMATELY 250 NM WEST OF LUZON, PHILIPPINES, HAS DRIFTED SOUTHWESTWARD OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 300530Z1 VISIBLE SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 35 AND 45 KNOTS. ANIMATED VISIBLE SATELLITE IMAGERY DEPICTS THE LOW-LEVEL CIRCULATION CENTER TUCKED IN UNDERNEATH THE NORTHEASTERN PORTION OF THE CONVECTION. IMAGERY ALSO REVEAL ANOTHER WEAKER FULLY EXPOSED CIRCULATION ABOUT 60 NM TO THE NORTHEAST OF TS 21W. TS 21W IS FORECAST TO BEGIN DRIFTING GENERALLY NORTHWARD AS THE LOW-MID LEVEL RIDGE BUILDS EAST OF THE SYSTEM. TS 21W IS EXPECTED TO INTENSITY SLIGHTLY UNDER A MARGINAL ENVIRONMENT DURING THE NEXT 24 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 300600Z9 IS 12 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 301500Z9 (DTG 301352Z4), 302100Z6 (DTG 301952Z0), 310300Z7 (DTG 310152Z2) AND 310900Z3 (DTG 310752Z8). REFER TO TYPHOON 20W (PRAPIROON) WARNINGS (WTPN31 PGTW) FOR SIX- HOURLY UPDATES.// NNNN