ABPW10 PGTW 160600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/160600Z-170600ZMAR2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/150551MAR2023//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   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:
      (1) THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED NEAR 
18.1S 171.0W IS NOW LOCATED NEAR 18.2S 173.1W, APPROXIMATELY 260 NM 
SOUTHWEST OF PAGO PAGO, AMERICAN SAMOA. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY AND A 160142Z AMSR2 89GHZ MICROWAVE IMAGE DEPICT A FULLY 
EXPOSED, WELL DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) WITH SPARSE, 
SHALLOW CONVECTION SHEARED TO THE EASTERN PERIPHERY. THE SYSTEM IS 
CURRENTLY IN AN UNFAVORABLE ENVIRONMENT WITH WARM (28-29C) SST 
OFFSET BY WEAK EQUATORWARD OUTFLOW AND HIGH (25KT+) VWS. NUMERICAL 
MODELS ARE NO LONGER PREDICTING SIGNIFICANT DEVELOPMENT OF THIS SYSTEM. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM 
SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. THE POTENTIAL FOR THE 
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS 
IS DOWNGRADED TO LOW. SEE REF A (WTPS21 PGTW 150600) FOR FURTHER 
DETAILS.
      (2) THE AREA OF CONVECTION (INVEST 90P) PREVIOUSLY LOCATED NEAR 
18.1S 162.2E HAS DISSIPATED AND IS NO LONGER SUSPECT FOR THE DEVELOPMENT 
OF A SIGNIFICANT TROPICAL CYCLONE IN THE NEXT 24 HOURS.
      (3) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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