ABPW10 PGTW 070600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/070600Z-080600ZJUN2026//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED NEAR 
25.4N 123.1E IS NOW LOCATED NEAR 30.7N 131.2E, APPROXIMATELY 215 NM 
SOUTH-SOUTHWEST OF IWAKUNI. 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 AND BROAD ROTATION MOVING SOUTH 
OF KAGOSHIMA. 91W IS FORECASTED TO CONTINUE MOVING RAPIDLY NORTH-
NORTHEASTWARD. ENVIRONMENTAL ANALYSIS FOR THE AREA INDICATES 
UNFAVORABLE CONDITIONS FOR INTENSIFICATION WITH HIGH VERTICAL WIND 
SHEAR (20-30 KNOTS), COOL SEA SURFACE TEMPERATURES (24-26C), OFFSET BY 
GOOD EQUATORWARD OUTFLOW ALOFT. AS THE SYSTEM TRANSITS NORTH 
NORTHEASTWARD IT WILL ENCOUNTER SIGNIFICANTLY COOLER SEA SURFACE, AS 
WELL AS INCREASED TEMPERATURE ADVECTION. DETERMINISTIC GUIDANCE SHOWS 
91W REACHING PEAK INTENSITY OVER THE NEXT 12 HOURS AS IT PASSES WEST 
OF OKINAWA. THE WIND FIELD IS FORECAST TO EXPAND AS IT MOVES THROUGH 
THE PHILIPPINE SEA, WITH THE HIGHEST WINDS BEING LOCATED IN THE 
EASTERN SEMICIRCLE OF THE CIRCULATION. MAXIMUM SUSTAINED SURFACE WINDS 
ARE ESTIMATED AT 23 TO 28 KNOTS. MINIMUM SEA LEVEL PRESSURE IS 
ESTIMATED TO BE NEAR 1002 MB. FOR HAZARDS AND WARNINGS, REFERENCE THE 
FLEET WEATHER CENTER SAN DIEGO HIGH WINDS AND SEAS PRODUCT OR REFER TO 
LOCAL WMO DESIGNATED FORECAST AUTHORITY. 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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