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WTPN21 PGTW 302300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT REISSUED//
REF/A/JOINT TYPHOON WRNCEN PEARL HARBOR HI/292251Z JUL 14//
AMPN/REF IS TROPICAL CYCLONE FORMATION ALERT (WTPN21 PGTW 292300)//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
130 NM EITHER SIDE OF A LINE FROM 24.4N 128.3E TO 31.1N 124.9E
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 20 TO 25 KNOTS. METSAT IMAGERY AT
302032Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 24.7N
128.0E. THE SYSTEM IS MOVING NORTHWESTWARD AT 09 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 19.9N
130.5E IS NOW LOCATED NEAR 24.7N 128.0E, APPROXIMATELY 100 NM SOUTH
OF KADENA AB, OKINAWA, JAPAN. ANIMATED ENHANCED INFRARED SATELLITE
IMAGERY SHOWS A SLOWLY CONSOLIDATING MONSOON DEPRESSION. THE
STRONGEST WINDS CONTINUE TO BE LOCATED ALONG THE EXTENDED PERIPHERY
OF THE SYSTEM, HOWEVER, CENTRAL WINDS REMAIN BETWEEN 15 TO 20 KNOTS.
AN OLDER ASCAT PASS AT 301237Z MISSED THE CENTRAL CORE OF THE
DEPRESSION, BUT ALONG THE WESTERN PERIPHERY THE WIND SPEEDS AGREE
WITH THE CURRENT ASSESSMENT. UPPER LEVEL ANALYSIS INDICATES A POINT
SOURCE ANTICYCLONE IS DEVELOPING OVER THE LOW LEVEL CIRCULATION
CENTER AND IS CREATING A LOW VERTICAL WIND SHEAR ENVIRONMENT.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 992 MB. BASED ON
A SLOW CONSOLIDATION OF THE STRONGER PERIPHERY WINDS TOWARD THE
CENTER BUT A LACK DEEP CENTRAL CONVECTION, THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS REMAINS HIGH. THIS SUPERSEDES REF A.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY
312300Z.//
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