ABPW10 PGTW 120600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/120600Z-130600ZJUN2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120151ZJUN2023//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 12JUN23 0000Z, TROPICAL STORM 03W (GUCHOL) WAS LOCATED NEAR 
28.1N 136.7E, APPROXIMATELY 458 NM SOUTH-SOUTHWEST OF YOKOSUKA, JAPAN, 
AND HAD TRACKED NORTHEASTWARD AT 20 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 
KNOTS. SEE REF A (WTPN31 PGTW 120300) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 99W) PREVIOUSLY LOCATED NEAR 
21.9N 108.5E IS NOW LOCATED NEAR 19.9N 113.5E, APPROXIMATELY 148 NM 
SOUTH-SOUTHWEST OF HONG KONG, CHINA. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY (MSI) AND ANIMATED RADAR IMAGERY DEPICT A FULLY OBSCURED, 
DISORGANIZED LOW LEVEL CIRCULATION CENTER (LLCC) WITH ROWS OF FLARING 
CONVECTION TO THE SOUTH. THE ENVIRONMENT IS MARGINALLY FAVORABLE FOR 
DEVELOPMENT WITH ROBUST EQUATORWARD OUTFLOW, LOW (05KT) VERTICAL WIND 
SHEAR, AND VERY WARM (30-31C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE 
IN GENERAL AGREEMENT THAT INVEST 99W WILL TRACK EAST THEN NORTHEASTWARD 
NOT DEVELOPING OVER THE NEXT 24-48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS 
ARE ESTIMATED AT 13 TO 17 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED 
TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT 
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.
      (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.//
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