ABPW10 PGTW 050230
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/050230Z-050600ZSEP2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/041953ZSEP2023//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/041951ZSEP2023//
REF/C/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/050151ZSEP2023//
NARR/REFS A AND B ARE TROPICAL CYCLONE FINAL WARNINGS AND REF C IS A
TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 04SEP23 1800Z, TROPICAL DEPRESSION 10W (HAIKUI) WAS 
LOCATED NEAR 23.7N 117.3E, APPROXIMATELY 191 NM EAST-NORTHEAST OF HONG 
KONG, AND HAD TRACKED WESTWARD AT 11 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 
40 KNOTS. SEE REF A (WTPN33 PGTW 042100) FOR THE FINAL WARNING ON THIS 
SYSTEM.
      (2) AT 04SEP23 1800Z, TROPICAL DEPRESSION 11W (KIROGI) WAS 
LOCATED NEAR 30.7N 133.5E, APPROXIMATELY 227 NM SOUTH-SOUTHEAST OF 
IWAKUNI, JAPAN, AND HAD TRACKED SOUTHWESTWARD AT 11 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 25 
KNOTS GUSTING TO 35 KNOTS. SEE REF B (WTPN31 PGTW 042100) FOR THE 
FINAL WARNING ON THIS SYSTEM.
      (3) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 99W) PREVIOUSLY LOCATED NEAR
21.1N 130.3E IS NOW LOCATED NEAR 21.9N 131.7E, APPROXIMATELY 244 NM
SOUTHEAST OF KADENA AB, OKINAWA, JAPAN. ANIMATED MULTISPECTRAL 
SATELLITE IMAGERY  AND A 042210Z SSMIS 91 GHZ IMAGE DEPICTS A PARTLY 
OBSCURED LLCC WITH BUILDING CONVECTION TO THE SOUTHWEST AND LOWER 
LEVEL CLOUDS WRAPPING AROUND THE LLCC. UPPER-LEVEL ANALYSIS REVEALS A 
FAVORABLE ENVIRONMENT WITH DUAL CHANNEL OUTFLOW TO THE NORTH AND 
SOUTH, LOW VERTICAL WINDSHEAR(5-10KTS) AND WARM SEA SURFACE 
TEMPERATURES (29-30C). GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 99W 
WILL TRACK NORTH-NORTHEAST AND CONTINUE TO DEVELOP OVER THE NEXT 12-36 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 17 TO 22 
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN 
THE NEXT 24 HOURS IS UPGRADED TO HIGH. SEE REF A (WTPN21 PGTW 050200) 
FOR FURTHER DETAILS.
      (2) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: UPGRADED  AREA IN PARA. 1.B.(1) TO 
HIGH.//
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