ABPW10 PGTW 161600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/161600Z-170600ZOCT2021//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/161352ZOCT2021//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 16OCT21 1200Z, TROPICAL STORM 23W (NAMTHEUN) WAS 
LOCATED NEAR 31.8N 166.0E, APPROXIMATELY 751 NM NORTH OF WAKE 
ISLAND, AND HAD TRACKED NORTH-NORTHEASTWARD AT 12 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 60 
KNOTS GUSTING TO 75 KNOTS. SEE REF A (WTPN32 PGTW 161500) FOR 
FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) AN AREA OF CONVECTION (INVEST 97W) HAS PERSISTED NEAR 
14.1N 112.0E, APPROXIMATELY 250 NM EAST-SOUTHEAST OF DANANG, 
VIETNAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS A 
POORLY-ORGANIZED DISTURBANCE WITH FLARING DEEP CONVECTION OVER THE 
WESTERN SEMICIRCLE. A 161239Z ASCAT-A IMAGE REVEALS A BROAD 
CIRCULATION WITH 15 TO 20 KNOT WINDS AND 25 TO 30 KNOT EASTERLIES 
DISPLACED TO THE NORTH. UPPER-LEVEL ANALYSIS INDICATES A MARGINALLY 
FAVORABLE ENVIRONMENT WITH LOW TO MODERATE VERTICAL WIND SHEAR AND 
BROAD EQUATORWARD OUTFLOW. SEA SURFACE TEMPERATURES ARE CONDUCIVE AT 
28-29C. GLOBAL MODELS INDICATE SYSTEM WILL TRACK WESTWARD TO WEST-
NORTHWESTWARD WITH WEAK DEVELOPMENT. THE SYSTEM IS EXPECTED TO TRACK 
OVERLAND WITHIN THE NEXT 12 HOURS. MAXIMUM SUSTAINED SURFACE WINDS 
ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS 
ESTIMATED TO BE NEAR 1006 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 LOW AREA IN PARAGRAPH 1.B.(1).//
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