WTPN31 PGTW 120900 AMD MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL DEPRESSION 19W WARNING NR 002A AMENDED 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 120600Z9 --- NEAR 31.0N4 130.0E4 MOVEMENT PAST SIX HOURS - 015 DEGREES AT 07 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 - 030 KT, GUSTS 040 KT REPEAT POSIT: 31.0N4 130.0E4 --- FORECASTS: 12 HRS, VALID AT: 121800Z2 --- 33.2N8 134.1E9 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 065 DEG/ 25 KTS --- 24 HRS, VALID AT: 130600Z0 --- 35.1N9 139.7E0 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 070 DEG/ 32 KTS --- 36 HRS, VALID AT: 131800Z3 --- 37.0N0 147.2E4 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 120900Z2 POSITION NEAR 31.6N0 131.0E5. TROPICAL DEPRESSION (TD) 19W, LOCATED APPROXIMATELY 20 NM OFF THE SOUTHWESTERN COAST OF KYUSHU, JAPAN, HAS TRACKED NORTH- NORTHEASTWARD AT 07 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 120530Z1 MULTISPECTRAL SATELLITE IMAGERY, SYNOPTIC OBSERVATIONS, RADAR, AND A RECENT MICROWAVE SATELLITE PASS. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 25 AND 30 KNOTS AND SYNOPTIC OBSERVATIONS. JUSTIFICATION FOR AMENDMENT: CURRENT FORECAST TRACK IS SIGNIFICANTLY QUICKER THAN WARNING NUMBER 1 AND SYSTEM IS EXPECTED TO DISSIPATE INSTEAD OF BECOMING EXTRATROPICAL OVER WATER. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 120600Z9 IS 10 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 121500Z9, 122100Z6, 130300Z7, AND 130900Z3.// NNNN