ABPW10 PGTW 100230
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/100230Z-100600ZAPR2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/100221ZAPR2023//
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:
      (1) THE AREA OF CONVECTION (INVEST 90W) PREVIOUSLY LOCATED NEAR 
9.2N 136.4E IS NOW LOCATED NEAR 10.6N 134.6E, APPROXIMATELY 656 NM EAST-
SOUTHEAST OF LEGAZPI, PHILIPPINES. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY DEPICTS A BROAD LOW-LEVEL CIRCULATION (LLC) WITH THE STRONGEST 
CONVECTION TO THE NORTH OF THE LLC. A RECENT SURFACE OBSERVATIONS 041000Z 
SHOWS WINDS COMING FROM THE EAST AT 20 KNOTS AND WITH A MEAN SEA LEVEL 
PRESSURE 1004 MB. ENVIRONMENTAL ANALYSIS REVEALS FAVORABLE CONDITIONS FOR 
DEVELOPMENT WITH MODERATE POLEWARD OUTFLOW ALOFT, LOW TO MODERATE 
VERTICAL WIND SHEAR (15-20KTS), AND WARM (30-31C) SST. GLOBAL MODELS ARE 
IN AGREEMENT THAT 90W WILL GRADUALLY DEVELOP AS IT TRACKS WEST-
NORTHWESTWARD TOWARD THE PHILIPPINES. MAXIMUM SUSTAINED SURFACE WINDS ARE 
ESTIMATED AT 20 TO 24 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO 
BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT 
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO HIGH. SEE REF A 
(WTPN21 PGTW 100230) 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.
3. JUSTIFICATION FOR REISSUE: UPGRADED AREA IN PARA. 1.B.(1) TO HIGH.//
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