ABPW10 PGTW 300600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/300700ZSEP2025-010700ZOCT2025//
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 93W) PREVIOUSLY LOCATED NEAR 
13.0N 140.0E IS NOW LOCATED NEAR 14.1N 135.2E, APPROXIMATELY 352 NM 
SOUTH-SOUTHEAST OF YAP. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS 
FORMATIVE BANDING WRAPPING AROUND THE WESTERN PERIPHERY OF A BROAD 
LOWLEVEL CIRCULATION (LLC), WITH STRONG MID-LEVEL TURNING OVER THE 
SOUTHWESTERN QUADRANT. A 292336Z ASCAT-B IMAGE REVEALS AN ELONGATED BUT 
MORE DEFINED CIRCULATION, WITH A SWATH OF 15-20 KNOT WINDS OVER THE 
NORTHERN QUADRANT. A 292115Z GMI 89GHZ COLOR COMPOSITE MICROWAVE IMAGE 
SHOWS A CONSOLIDATING LLC, WITH IMPROVED DEEP CONVECTIVE BANDING OVER 
THE WESTERN PERIPHERY AND FRAGMENTED BANDING NEAR THE CENTER. 
ENVIRONMENTAL CONDITIONS ARE FAVORABLE FOR DEVELOPMENT WITH LOW 
(5KT10KT) VERTICAL WIND SHEAR, WARM (28C-30C) SSTS AND GOOD OUTFLOW 
ALOFT, ENHANCED BY THE TUTT POSITIONED TO THE NORTH. GLOBAL MODELS 
INDICATE GRADUAL INTENSIFICATION, WITH A WEST-NORTHWESTWARD TRACK OVER 
THE NEXT TWO DAYS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 
TO 18 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. 
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS REMAINS 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.//
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