South Pacific Tropical Cyclone Tracker

ABPW10 PGTW 181400
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/181400Z-190600ZJUN2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/181351ZJUN2026//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
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 92W) PREVIOUSLY LOCATED NEAR 
12.0N 147.7E IS NOW LOCATED NEAR 12.1N 146.0E, APPROXIMATELY 108 NM 
SOUTHEAST OF GUAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY (EIR) 
DEPICTS PERSISTENT DEEP CONVECTION OBSCURING A CONSOLIDATING LOW LEVEL 
CIRCULATION CENTER (LLCC). ENVIRONMENTAL ANALYSIS INDICATES CONDITIONS 
FAVORABLE FOR DEVELOPMENT, WITH LOW VERTICAL WIND SHEAR (5-10 KTS), 
MODERATE POLEWARD OUTFLOW ALOFT, AND WARM SEA SURFACE TEMPERATURES (29-
30 C). GLOBAL DETERMINISTIC AND ENSEMBLE GUIDANCE GENERALLY AGREES ON 
FURTHER DEVELOPMENT OVER THE NEXT 24 HOURS AS THE SYSTEM CONSOLIDATES 
AND INTENSIFIES WHILE TRACKING WEST-NORTHWESTWARD. 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 HIGH. SEE REF A (WTPN21 PGTW 181400) 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: UPGRADED AREA IN PARA. 1.B.(1) TO HIGH.//
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