ABPW10 PGTW 100600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/100600Z-110600ZAPR2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/100152ZAPR2026//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/100151ZAPR2026//
NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 10APR26 0000Z, TROPICAL STORM 04W (SINLAKU) WAS LOCATED 
NEAR 8.2N 151.2E, APPROXIMATELY 496 NM SOUTHEAST OF ANDERSEN AFB, AND 
HAD TRACKED WEST-SOUTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 40 KNOTS GUSTING TO 
50 KNOTS. SEE REF A (WTPN31 PGTW 100300) 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:
      (1) AT 10APR26 0000Z, TROPICAL CYCLONE 30P (MAILA) WAS LOCATED 
NEAR 8.1S 154.6E, APPROXIMATELY 737 NM NORTHEAST OF CAIRNS, 
AUSTRALIA, AND HAD TRACKED EAST-NORTHEASTWARD AT 02 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 70 
KNOTS GUSTING TO 85 KNOTS. SEE REF B (WTPS31 PGTW 100300) FOR FURTHER 
DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) AN AREA OF CONVECTION (SS 31P) PREVIOUSLY LOCATED NEAR 28.2S 
178.8E IS NOW LOCATED NEAR 28.7S 178.5E, APPROXIMATELY 564 NM 
SOUTHWEST OF TONGA. THE SYSTEM IS CURRENTLY CLASSIFIED AS A 
SUBTROPICAL CYCLONE, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL 
AND MIDLATITUDE CYCLONE FEATURES. MULTISPECTRAL SATELLITE IMAGERY 
(MSI) DEPICTS A VERY WELL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) 
EMBEDDED WITHIN A TIGHT SWIRL OF MID-LEVEL CLOUD BANDS, ABSENT OF ANY 
DEEP CONVECTION. ENVIRONMENTAL ANALYSIS REVEALS UNFAVORABLE 
CONDITIONS FOR DEVELOPMENT CHARACTERIZED BY HIGH VERTICAL WIND SHEAR 
(20-30 KNOTS), MODERATE UPPER LEVEL POLEWARD OUTFLOW, AND COLD SEA 
SURFACE TEMPERATURES (23-24 C). GLOBAL MODELS AGREE ON A 
SOUTHWESTWARD TRACK OVER THE NEXT 24-48 HOURS. FOR HAZARDS AND 
WARNINGS, REFERENCE THE FLEET WEATHER CENTER SAN DIEGO HIGH WINDS AND 
SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED FORECAST AUTHORITY. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 53 TO 58 KNOTS. 
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 977 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS IS LOW. 
      (2) NO OTHER SUBTROPICAL SYSTEMS.//
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