ABPW10 PGTW 030600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/030600Z-040600ZAUG2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/030151ZAUG2023//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 03AUG23 0000Z, TYPHOON 06W (KHANUN) WAS LOCATED NEAR 
26.6N 124.7E, APPROXIMATELY 166 NM WEST OF KADENA AB, AND HAD TRACKED 
WEST-NORTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS WERE ESTIMATED AT 90 KNOTS GUSTING TO 110 
KNOTS. SEE REF A (WTPN32 PGTW 030300) 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 
30.6N 149.0E IS NOW LOCATED NEAR 32.3N 148.6E, APPROXIMATELY 481 NM 
EAST-SOUTHEAST 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 SHOWS DEEP CONVECTION AND SHALLOW RAIN BANDS 
WRAPPING INTO A FULLY-EXPOSED LOW-LEVEL CIRCULATION. THE ASYMMETRIC 
WIND BAND AND ASSOCIATED DEEP CONVECTION ARE CONFINED NORTH AND EAST 
OF THE LLC DUE TO A STRONG UPPER-LEVEL TROUGH JUST TO THE SOUTHWEST. 
ENVIRONMENTAL ANALYSIS INDICATES INVEST 93W IS IN A MARGINAL AREA FOR 
DEVELOPMENT UNDER STRONG SOUTHERLY FLOW ALOFT WITH HIGH (30-
40KT) VWS OFFSET BY WARM (29C) SEA SURFACE TEMPERATURES. GLOBAL MODELS 
ARE IN GENERAL AGREEMENT THAT 93W WILL TRACK NORTHWARD OVER THE NEXT 
72 HOURS WELL EAST OF HONSHU, ACCOMPANIED CLOSELY BY THE 
AFOREMENTIONED UPPER-LEVEL TROUGH, 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 23 TO 28 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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