ABPW10 PGTW 140600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/140600Z-150600ZJUL2026//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 09W) PREVIOUSLY LOCATED NEAR 
36.6N 121.2E IS NOW LOCATED NEAR 37.5N 123.0E, APPROXIMATELY 194 NM WEST 
OF SEOUL, SOUTH KOREA. THE SYSTEM IS CURRENTLY CLASSIFIED AS A 
SUBTROPICAL DEPRESSION, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL 
AND MIDLATITUDE CYCLONE FEATURES. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY (MSI) DEPICTS A WEAK, BROAD ROTATION HAS MOVED GENERALLY 
NORTHEASTWARD ALONG THE SOUTHERN COAST OF THE QINGDAO PENINSULA AND INTO 
THE YELLOW SEA; THE REMNANTS OF 09W IS FORECAST TO CONTINUE MOVING 
RAPIDLY NORTHEASTWARD WHILE QUICKLY TRANSITIONING TO AN EXTRATROPICAL 
CYCLONE AS IT PASSES OVER THE NORTHERN KOREAN PENINSULA. ENVIRONMENTAL 
ANALYSIS OF THE AREA INDICATES UNFAVORABLE CONDITIONS FOR TROPICAL 
TRANSITION. THE SYSTEM LIES UNDER A 500MB LOW-HEIGHT CENTER AND STACKS 
BACK TO A STRONG 200MB TROUGH CURRENTLY OVER NORTHERN CHINA, WHICH IS 
INDUCING LOW TO MODERATE VERTICAL WIND SHEAR (15-20 KTS) AND STRONG 
POLEWARD OUTFLOW ALOFT, WHICH IS HELPING TO MAINTAIN A SMALL REGION OF 
SHALLOW CONVECTION NEAR THE CORE OF THE SYSTEM. SEA SURFACE TEMPERATURES 
ARE VERY COOL (22-25 C), PROVIDING MINIMAL THERMODYNAMIC SUPPORT FOR THE 
SYSTEM. GLOBAL MODELS ARE IN AGREEMENT THAT THE REMNANTS OF 09W WILL 
MOVE GENERALLY NORTHEAST WHILE MAINTAINING A BROAD AND ASYMMETRIC WIND 
FIELD MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 23 TO 28 KNOTS. 
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 993 MB. THE POTENTIAL 
FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 
HOURS REMAINS LOW.
      (2) NO OTHER SUBTROPICAL SYSTEMS.
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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