WTXS21 PGTW 270500 RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 135 NM EITHER SIDE OF A LINE FROM 13.6S 121.0E TO 15.9S 124.6E WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IMAGERY AT 270430Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 13.8S 121.4E. THE SYSTEM IS MOVING NORTHEASTWARD AT 06 KNOTS. 2. REMARKS: MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS HIGH. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 280500Z. // 9325032406 170S1222E 15 9325032412 170S1219E 15 9325032418 169S1216E 15 9325032500 167S1213E 15 9325032506 165S1212E 15 9325032512 161S1212E 15 9325032518 159S1212E 25 9325032600 157S1213E 25 9325032606 151S1209E 25 9325032612 147S1208E 25 9325032618 142S1210E 25 9325032700 138S1214E 30 ????