ABPW10 PGTW 240000
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/240000Z-240600ZAPR2021//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/231951ZAPR2021//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 23APR21 1800Z, SUBTROPICAL STORM 02W (SURIGAE) WAS 
LOCATED NEAR 23.2N 130.5E, APPROXIMATELY 247 NM SOUTHEAST OF KADENA 
AB, AND HAD TRACKED EASTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 60 KNOTS GUSTING 
TO 
75 KNOTS. SEE REF A (WTPN31 PGTW 232100) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   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: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) AN AREA OF CONVECTION (INVEST 96P) HAS PERSISTED NEAR
28.4S 142.2W, APPROXIMATELY 730 NM SOUTHEAST OF PAPEETE, FRENCH 
POLYNESIA. THE SYSTEM IS CURRENTLY CLASSIFIED AS A SUBTROPICAL 
STORM, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL AND 
MIDLATITUDE CYCLONE FEATURES. A RECENT 231856Z ASCAT-B IMAGE REVEALS 
A SWATH OF 35 TO 40 KNOT WINDS OVER THE SOUTHWEST QUADRANT. ANIMATED 
MULTISPECTRAL SATELLITE IMAGERY DEPICTS A BROAD ASYMMETRIC SYSTEM 
WITH FLARING CONVECTION DISPLACED TO THE EAST. ANIMATED WATER VAPOR 
IMAGERY INDICATES THE SYSTEM IS LOCATED DIRECTLY UNDER A BROAD UPPER-
LEVEL COLD CORE LOW. UPPER-LEVEL ANALYSIS INDICATES A MARGINAL 
ENVIRONMENT DUE TO CONVERGENCE ALOFT, ASSOCIATED WITH THE UPPER LOW, 
AND COOL (25-26 CELSIUS) SEA SURFACE TEMPERATURES, WHICH ARE NOT 
CONDUCIVE FOR TROPICAL TRANSITION. GLOBAL MODELS SHOW A GENERAL 
SOUTHWARD TRACK WITH MINIMAL INTENSIFICATION OVER THE NEXT 36-48 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 35 TO 40 
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. 
FOR HAZARDS AND WARNINGS, REFERENCE THE FLEET WEATHER CENTER SAN
DIEGO HIGH WINDS AND SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED
FORECAST AUTHORITY. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
      (2) NO OTHER SUBTROPICAL SYSTEMS.
3. JUSTIFICATION FOR REISSUE: ADDED SUBTROPICAL SYSTEM AS LOW IN
PARAGRAPH 2.C.(1).//
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