WTPS22 PGTW 151430 RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 100 NM EITHER SIDE OF A LINE FROM 15.5S 138.4E TO 18.1S 135.6E 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 151200Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 15.6S 138.3E. THE SYSTEM IS MOVING EASTWARD AT 02 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 161430Z. // 9324021212 150S1324E 20 9324021218 150S1329E 20 9324021300 150S1335E 20 9324021306 152S1340E 20 9324021312 153S1348E 20 9324021318 154S1361E 20 9324021400 154S1368E 25 9324021406 154S1372E 25 9324021412 154S1375E 25 9324021418 155S1377E 25 9324021500 156S1379E 25 9324021506 156S1381E 25 9324021512 156S1383E 30 NNNN