WTXS21 PGTW 171800 RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 150 NM EITHER SIDE OF A LINE FROM 6.9S 75.9E TO 9.5S 68.8E 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 171730Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 7.0S 75.4E. THE SYSTEM IS MOVING WEST-SOUTHWESTWARD AT 12 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 181800Z. // 9425101606 46S 816E 15 9425101612 46S 809E 15 9425101618 50S 802E 15 9425101700 57S 792E 15 9425101706 64S 780E 25 9425101712 67S 766E 30 9425101718 70S 754E 30 ????