ABPW10 PGTW 140930
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS/REISSUED/140930Z-150600ZOCT2020//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/140851ZOCT2020//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/140651ZOCT2020//
NARR/REF A IS A TROPICAL CYCLONE FINAL WARNING. REF B IS A TROPICAL 
CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 14OCT20 0600Z, TROPICAL STORM 18W (NANGKA) WAS LOCATED 
NEAR 20.2N 106.5E, APPROXIMATELY 59 NM SOUTHEAST OF HANOI, VIETNAM, 
AND HAD TRACKED WEST-NORTHWESTWARD AT 11 KNOTS OVER THE PAST SIX 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS 
GUSTING TO 45 KNOTS. SEE REF A (WTPN33 PGTW 140900) FOR THE FINAL 
WARNING ON THIS SYSTEM.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 94W) PREVIOUSLY LOCATED 
NEAR 12.6N 124.0E, IS NOW LOCATED NEAR 12.9N 123.2E, APPROXIMATELY 
203 NM SOUTHEAST OF MANILA, PHILIPPINES. ANIMATED ENHANCED INFRARED 
SATELLITE IMAGERY AND A 140101Z METOP-B 89GHZ IMAGE REVEAL A 
CONSOLIDATING LOW LEVEL CIRCULATION WITH FLARING CONVECTION. INVEST 
94W IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (<15 KTS) 
VERTICAL WIND SHEAR, GOOD WESTWARD OUTFLOW, AND WARM (29-30C) SEA 
SURFACE TEMPERATURES. GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 94W 
WILL CONTINUE TO TRACK GENERALLY WESTWARD OVER THE CENTRAL 
PHILIPPINES BEFORE CONSOLIDATING FURTHER IN THE SOUTH CHINA SEA. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. 
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS REMAINS HIGH. SEE REF B (WTPN21 PGTW 
140700) FOR FURTHER DETAILS.
      (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: ISSUED FINAL WARNING FOR TS 18W.//
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