ABPW10 PGTW 061530
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/061530Z-070600ZOCT2020//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/061351ZOCT2020//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 06OCT20 1200Z, TROPICAL STORM 16W (CHAN-HOM) WAS 
LOCATED NEAR 24.3N 137.7E, APPROXIMATELY 552 NM EAST-SOUTHEAST OF 
KADENA AB, OKINAWA, AND HAD TRACKED WESTWARD AT 05 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 55 
KNOTS GUSTING TO 70 KNOTS. SEE REF A (WTPN31 PGTW 061500) FOR 
FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) AN AREA OF CONVECTION (INVEST 91W) HAS PERSISTED NEAR 
12.3N 111.6E, APPROXIMATELY 295 NM SOUTHEAST OF DANANG, VIETNAM. 
ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 060941Z SSMIS 
91GHZ IMAGE REVEAL A BROAD LOW LEVEL CIRCULATION WITH WEAK FORMATIVE 
BANDING IN THE NORTHERN SEMICIRCLE. INVEST 91W IS CURRENTLY IN A 
MARGINALLY FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH BROAD UPPER 
LEVEL DIFFLUENCE, LOW (<15KTS) VERTICAL WIND SHEAR, AND WARM (29-
30C) SEA SURFACE TEMPERATURES; HOWEVER, GLOBAL MODELS INDICATE 
INVEST 91W WILL CONTINUE TO TRACK WESTWARD AND CONSOLIDATE SLIGHTLY 
BEFORE MAKING LANDFALL IN 12-18 HOURS. MAXIMUM SUSTAINED SURFACE 
WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS 
ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A 
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
      (2) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
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.
3. JUSTIFICATION FOR REISSUE: ADDED AREA IN PARA 1.B.(1) AS LOW.//
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