ABPW10 PGTW 270600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/270600Z-280600ZJUL2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/270151ZJUL2023//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/270551ZJUL2023//
NARR/REF A IS A TROPICAL CYCLONE WARNING. REF B IS A TROPICAL CYCLONE 
FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 27JUL23 0000Z, TYPHOON 05W (DOKSURI) WAS LOCATED NEAR 
20.7N 119.7E, APPROXIMATELY 282 NM SOUTH-SOUTHWEST OF TAIPEI, TAIWAN, 
AND HAD TRACKED NORTH- NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 75 KNOTS 
GUSTING TO 90 KNOTS. SEE REF A (WTPN31 PGTW 270300) FOR FURTHER 
DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED NEAR 
9.3N 141.7E IS NOW LOCATED NEAR 11.6N 140.5E, APPROXIMATELY 190 NM 
NORTHEAST OF YAP. ANIMATED MULTISPECTRAL SATELLITE (MSI) IMAGERY 
DEPICTS BROAD TURNING AND A WEAK LOW-LEVEL CIRCULATION (LLC) WITH 
BUILDING CONVECTION AND FORMATIVE BANDING WRAPPING INTO THE LLC ALONG 
THE SOUTHERN PERIPHERY. IN ADDITION, THE FORMATIVE BANDING IS FURTHER 
APPARENT IN A 270349Z AMSR2 89GHZ IMAGE BUT IS DISPLACED RELATIVELY 
FAR OUTWARD OF THE CENTER. INVEST 91W REMAINS IN A MARGINAL 
ENVIRONMENT FOR DEVELOPMENT DUE TO NORTHERLY OUTFLOW FROM TY 05W, 
WHILE HAVING IMPROVED SLIGHTLY OVER THE PAST SIX HOURS, IS STILL 
APPLYING SOME PRESSURE ON THE SYSTEM, PLACING UNDER LOW TO MODERATE 
(10-20KT) VERTICAL WIND SHEAR. SEA SURFACE TEMPERATURES REMAIN 
CONDUCIVE AT A WARM 29-30C AND UPPER-LEVEL EQUATORWARD OUTFLOW IS 
IMPROVING. GLOBAL MODELS ARE IN STRONG AGREEMENT THAT INVEST 91W WILL 
STEADILY CONSOLIDATE AS IT TRACKS NORTH-NORTHWEST OVER THE NEXT 6-24 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 21 TO 26 
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN 
THE NEXT 24 HOURS REMAINS HIGH. SEE REF B (WTPN21 PGTW 260600) 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.//
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