Tropical Cyclone Formation Alert...Easten Pacific

[Typhoon_Willie]

This is from the Joint Typhoon Warning Center.

WTPN21 PHNC 061500
MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE FORMATION ALERT 061451ZJUN04//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
130 NM EITHER SIDE OF A LINE FROM 16.0N7 103.9W3 TO 20.1N3
107.5W3 WITHIN THE NEXT 00 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. MET­
SAT IMAGERY AT 061200Z9 INDICATES THAT A CIRCULATION CENTER IS
LOCATED NEAR 16.2N9 104.3W8. THE SYSTEM IS MOVING WEST-NORTH­
WESTWARD AT 06 KNOTS.
2. REMARKS: AN AREA OF CONVECTION LOCATED NEAR 16.1N8 104.3E8,
APPROXIMATELY 260 NM WEST OF ACAPULCO, MEXICO, HAS PERSISTED OVER
THE PAST 6 TO 12 HOURS. ANIMATED INFRARED SATELLITE IMAGERY REVEALS
DEEP CONVECTIVE CELLS BEGINNING TO CONSOLIDATE OVER A 1006 MB
LOW LEVEL CIRCULATION CENTER. NEAR A POSSIBLE WEAK LOW LEVEL
CIRCULATION CENTER (LLCC). UPPER LEVEL ANALYSIS INDICATES A
FAVORABLE ENVIRONMENT OF OUTFLOW IN THE EQUATORWARD DIRECTION AND
WEAK VERTICAL WIND SHEAR OVER THE AREA. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE
IS ESTIMATED TO BE 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS NOW GOOD.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED
BY 071500Z3.//