ABPW10 PGTW 040600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/040600Z-050600ZAUG2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/040152ZAUG2023//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 04AUG23 0000Z, TYPHOON 06W (KHANUN) WAS LOCATED NEAR 
27.0N 124.6E, APPROXIMATELY 174 NM WEST OF KADENA AB, OKINAWA, JAPAN, 
AND HAD TRACKED NORTHEASTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 65 KNOTS GUSTING TO 
80 KNOTS. SEE REF A (WTPN32 PGTW 040300) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 93W) PREVIOUSLY LOCATED NEAR 
32.3N 148.6E IS NOW LOCATED NEAR 35.5N 148.1E, APPROXIMATELY 414 NM 
EAST OF YOKOSUKA, JAPAN. 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 CONSOLIDATED CONVECTION ALONG THE 
WESTERN PERIPHERY AND SHALLOW RAIN BANDS WRAPPING INTO A FULLY-EXPOSED 
LOW-LEVEL CIRCULATION. A PARTIAL, 040020Z ASCAT-C PASS REVEALS AN 
ELONGATED CIRCULATION WITH WINDS UP TO 35 KTS IN THE SOUTHERN 
SEMICIRCLE. ENVIRONMENTAL ANALYSIS INDICATES INVEST 93W IS IN A 
MARGINALLY UNFAVORABLE AREA FOR DEVELOPMENT UNDER CONVERGENT FLOW 
ALOFT WITH HIGH (30-40KT) VWS OFFSET BY WARM (27-28C) SEA SURFACE 
TEMPERATURES. GLOBAL MODELS ARE IN AGREEMENT THAT 93W WILL TRACK 
NORTH-NORTHEASTWARD OVER THE NEXT 48 HOURS WELL EAST OF HONSHU, 
ACCOMPANIED CLOSELY BY AN UPPER-LEVEL TROUGH LOCATED TO THE SOUTH, 
WHICH IS EXPECTED TO MAINTAIN STRONG SOUTHERLY VWS AND DRY AIR OVER 
THE CYCLONE. 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 30 TO 35 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED 
TO BE NEAR 1009 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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