ABPW10 PGTW 120600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/120600Z-130600ZJUL2025//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120151ZJUL2025//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 12JUL25 0000Z, TROPICAL STORM 06W (SIX) WAS LOCATED NEAR 
25.2N 140.5E, APPROXIMATELY 50 NM WEST-NORTHWEST OF IWO TO, AND HAD 
TRACKED EASTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS GUSTING TO 45 
KNOTS. SEE REF A (WTPN31 PGTW 120300) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 92W) PREVIOUSLY LOCATED
NEAR 30.5N 123.6E IS NOW LOCATED NEAR 30.9N 123.4E, APPROXIMATELY 349 
NM WEST-SOUTHWEST OF SASEBO, JAPAN. THE SYSTEM IS CURRENTLY 
CLASSIFIED AS A SUBTROPICAL DEPRESSION, GENERALLY CHARACTERIZED AS 
HAVING BOTH TROPICAL AND MIDLATITUDE CYCLONE FEATURES. ANIMATED 
MULTISPECTRAL SATELLITE IMAGERY DEPICTS AN OBSCURED, ELONGATED LOW 
LEVEL CIRCULATION WITH DEEP PERSISTENT CONVECTION BUILDING OVER THE 
CENTER. A RECENT 120116Z ASCAT-C PASS REVEALS 25-30 KNOTS ALONG THE 
NORTHERN SIDE OF THE SEMI-CIRCLE, SUPPORTED BY A RECENT SHIP 
OBSERVATION THAT IS REPORTING SUSTAINED WIND SPEEDS OF 25 KNOTS WITH 
A MSLP OF 1008MB. ENVIRONMENTAL ANALYSIS REVEALS LOW VERTICAL WIND 
SHEAR (VWS) OF 10-15 KNOTS, GOOD POLEWARD UPPER-LEVEL OUTFLOW AND 
WARM SEA SURFACE TEMPERATURES (SST) OF 29-30C. DETERMINISTIC AND 
ENSEMBLE MODELS ARE IN AGREEMENT THAT INVEST 92W WILL MAINTAIN TD 
STRENGTH OVER THE NEXT 24 TO 48 HOURS AS IT TRACKS EASTWARD INTO 
SOUTHERN JAPAN. 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 25 TO 30 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 REMAINS MEDIUM.
      (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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