ABPW10 PGTW 040600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/040600Z-050600ZAPR2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/040151ZAPR2026//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
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:
      (1) AT 04APR26 0000Z, TROPICAL CYCLONE 30P (THIRTY) WAS LOCATED 
NEAR 9.1S 155.1E, APPROXIMATELY 717 NM NORTHEAST OF CAIRNS, AUSTRALIA, 
AND HAD TRACKED NORTHWESTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS GUSTING TO 
45 KNOTS. SEE REF A (WTPS31 PGTW 040300) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED NEAR 
12.4S 170.8E IS NOW LOCATED NEAR 11.7S 171.8E, APPROXIMATELY 347 NM 
NORTH-NORTHEAST OF PORT VILLA. MULTISPECTRAL SATELLITE IMAGERY (MSI) 
REVEALS A BROAD LOW LEVEL CIRCULATION CENTER (LLCC) WITH AN ELONGATED 
BUT SLOWLY CONSOLIDATING CENTER. A RECENT OSCAT-3 PASS REVEALED A 
BROAD CIRCULATION WITH A BAND OF ELEVATED WINDS UP TO 30 KNOTS ALONG 
THE EASTERN FLANK OF THE ROTATION. ENVIRONMENTAL ANALYSIS REVEALS 
FAVORABLE CONDITIONS FOR DEVELOPMENT WITH LOW TO MODERATE VERTICAL 
WIND SHEAR (15-20 KNOTS), GOOD DIFFLUENT OUTFLOW ALOFT, AND WARM SEA 
SURFACE TEMPERATURES (29-30 C). GLOBAL MODELS ARE IN FAIR AGREEMENT 
THAT INVEST 91P WILL CONTINUE TO HAVE STEADY DEVELOPMENT AND A 
SOUTHWESTWARD TRACK OVER THE NEXT 24 TO 36 HOURS. MAXIMUM SUSTAINED 
SURFACE WINDS ARE ESTIMATED AT 28 TO 33 KNOTS. MINIMUM SEA LEVEL 
PRESSURE IS ESTIMATED TO BE NEAR 1002 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.//
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