JTWC - Tropical Cyclone Formation Alert - Tropical Depression 27

WTPN21 PGTW 102030 COR
REF/A/NAVMARFCSTCEN PEARL HARBOR HI/091451Z SEP 11//
AMPN/REF IS TROPICAL CYCLONE FORMATION ALERT (WTPN21 PGTW 091500)//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
160 NM EITHER SIDE OF A LINE FROM 20.1N 139.7E TO 23.0N 132.2E
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 17 TO 22 KNOTS. METSAT IM-
AGERY AT 102000Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 20.7N 137.9E. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 12
KNOTS.
2. REMARKS:
THIS SUPERSEDES REF A.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 112030Z.
//
9111090718 172N1495E 15
9111090800 175N1485E 15
9111090806 180N1476E 15
9111090812 183N1467E 15
9111090818 185N1458E 15
9111090900 187N1451E 15
9111090906 188N1444E 20
9111090912 189N1436E 20
9111090918 191N1429E 20
9111091000 194N1415E 20
9111091006 198N1403E 20
9111091012 203N1391E 15
9111091018 207N1379E 20