ABPW10 PGTW 041400
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/041400Z-050600ZJUN2023//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 98W) PREVIOUSLY LOCATED NEAR 
10.5N 137.5E IS NOW LOCATED NEAR 10.9N 137.4E, APPROXIMATELY 97 NM 
NORTH-NORTHWEST OF YAP. ENHANCED INFRARED SATELLITE IMAGERY DEPICTS AN 
ELONGATED LOW-LEVEL CIRCULATION (LLC) WITH DEEP FLARING CONVECTION 
BUILDING ALONG THE EASTERN SEMI-CIRCLE. A 040758Z SSMIS 91GHZ MICROWAVE 
PASS FURTHER REVEALS AN IMPROVED CONVECTIVE STRUCTURE CHARACTERIZED BY 
FORMATIVE BANDING IN THE EASTERN PERIPHERY. A 041144Z PARTIAL ASCAT-B 
PASS REVEALS AN ELONGATED BUT IMPROVING CIRCULATION WITH A SWATH OF 
15-20 KNOT WINDS ALONG THE EASTERN SEMICIRCLE.  INVEST 98W IS IN A 
FAVORABLE ENVIRONMENT FOR DEVELOPMENT, DEFINED BY ROBUST POLEWARD OUTFLOW 
AND LOW (5-10KT) VERTICAL WIND SHEAR. SEA SURFACE TEMPERATURES REMAIN 
CONDUCIVE AT A WARM 30C. DETERMINISTIC AND ENSEMBLE MODELS ARE IN 
AGREEMENT THAT INVEST 98W WILL HAVE GRADUAL DEVELOPMENT AS IT MEANDERS 
POLEWARD OVER THE NEXT 48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE 
ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO 
BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT 
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM.
      (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 
MEDIUM.//
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