ALERT ATCF MIL 90X XXX 210729000000 2021072900 11.7 255.5 12.3 250.1 120 12.0 253.2 291330 2107291321 2 SUBJ/TROPICAL CYCLONE FORMATION ALERT// WTPN22 PHNC 291330 REF/A/JOINT TYPHOON WRNCEN PEARL HARBOR HI/290821Z JUL 21// AMPN/REF IS TROPICAL CYCLONE FORMATION ALERT (WTPN21 PHNC 290830)// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 120 NM EITHER SIDE OF A LINE FROM 11.7N 104.5W TO 12.3N 109.9W 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 18 TO 23 KNOTS. METSAT IMAGERY AT 291200Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 12.0N 106.8W. THE SYSTEM IS MOVING WESTWARD AT 10 KNOTS. 2. REMARKS: MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 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 301330Z. 4. SEE REF A FOR DETAILS ON A TROPICAL CYCLONE FORMATION ALERT LOCATED NEAR 13.8N 121.5W // 9021072806 117N1025W 15 9021072812 117N1033W 15 9021072818 117N1041W 20 9021072900 117N1050W 25 NNNN