ABPW10 PGTW 111430
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/111430Z-120600ZAPR2021//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/111351ZAPR2021//
AMPN/REF A IS A TROPICAL CYCLONE FINAL WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 94W) PREVIOUSLY LOCATED 
NEAR 4.4N 144.5E IS NOW LOCATED NEAR 4.8N 144.0E, APPROXIMATELY 516 
NM SOUTH OF GUAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY 
REVEALS SYMMETRICAL FLARING CONVECTION NEAR THE ASSESSED LOW LEVEL 
CIRCULATION (LLC). A PARTIAL 111048Z ASCAT-A PASS DEPICTS THE 
EASTERN SIDE OF AN ELONGATED LLC WITH 15-20 KT WINDS PRESENT TO THE 
NORTH AND SOUTH OF THE LLC. INVEST 94W IS IN A FAVORABLE ENVIRONMENT 
FOR TROPICAL DEVELOPMENT WITH ROBUST WESTWARD AND EQUATORWARD 
OUTFLOW ALOFT, LOW (5-10 KTS) VERTICAL WIND SHEAR, AND WARM (29-30C) 
SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 
THE CIRCULATION IN ASSOCIATION WITH INVEST 94W WILL CONTINUE TO 
CONSOLIDATE AND INTENSIFY AS IT TRACKS TO THE NORTHWEST OVER THE 
NEXT 24 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 
TO 23 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 IS UPGRADED TO MEDIUM.
      (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:
      (1) AT 11APR21 1200Z, TROPICAL CYCLONE 28P (TWENTYEIGHT) WAS 
LOCATED NEAR 27.5S 170.7E, APPROXIMATELY 409 NM SOUTHEAST OF NOUMEA, 
NEW CALEDONIA, AND HAD TRACKED SOUTHEASTWARD AT 19 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 
KNOTS GUSTING TO 45 KNOTS. SEE REF A (WTPS31 PGTW 111500) FOR THE 
FINAL WARNING ON THIS SYSTEM.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: UPGRADED AREA IN PARA. 1.B.(1) TO 
MEDIUM AND ISSUED FINAL WARNING FOR TC 28P.//
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