ABPW10 PGTW 100600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/100600Z-110600ZJUN2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/100151ZJUN2023//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 10JUN23 0000Z, TYPHOON 03W (GUCHOL) WAS LOCATED NEAR 19.0N 
129.9E, APPROXIMATELY 465 NM SOUTH-SOUTHEAST OF KADENA AB, AND HAD 
TRACKED NORTHWARD AT 04 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED 
SURFACE WINDS WERE ESTIMATED AT 90 KNOTS GUSTING TO 110 KNOTS. SEE REF A 
(WTPN31 PGTW 100300) 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 21.0N 109.5E, APPROXIMATELY 75.5 NM 
NORTHWEST OF HAIKOU, HAINAN ISLAND. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY (MSI), ANIMATED RADAR IMAGERY AND A 100336Z GMI 89 GHZ MICROWAVE 
IMAGE DEPICT A DISORGANIZED LOW LEVEL CIRCULATION CENTER (LLCC). A 
100245Z ASCAT-C PASS REVEALS 05-10 KT WINDS OVER WATER TO THE WEST OF THE 
LLCC. THE ENVIRONMENT IS MARGINALLY FAVORABLE FOR DEVELOPMENT WITH ROBUST 
EQUATORWARD OUTFLOW, LOW TO MODERATE (15-20KT) VERTICAL WIND SHEAR, AND 
VERY WARM (30-31C) SEA SURFACE TEMPERATURES. INTERACTION WITH LAND WILL 
HINDER DEVELOPMENT, HOWEVER GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 
99W WILL TRACK SOUTHWARD OR SOUTHEASTWARD OVER THE GULF OF TONKIN AND 
SLOWLY INTENSIFY OVER THE NEXT 24-48HRS. MAXIMUM SUSTAINED SURFACE WINDS 
ARE ESTIMATED AT 18 TO 22 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED 
TO BE NEAR 1001 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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