ABPW10 PGTW 180600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS/180600Z-190600ZJUN2021//
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 4.7N 157.1E IS NOW LOCATED NEAR 5.2N 155.7E, APPROXIMATELY 254 
NM EAST-SOUTHEAST OF CHUUK. ANIMATED MULTISPECTRAL SATELLITE IMAGERY 
(MSI) DEPICTS A BROAD AREA OF DENSE, PERSISTENT CONVECTION OVER THE 
CENTRAL POSITION, HOWEVER ANALYSIS OF LOW LEVEL FEATURES FROM A 
36GHZ COMPOSITE AMSR2 IMAGE AT 180303Z REVEALS AN OVERALL LACK OF 
ORGANIZED SYSTEM STRUCTURE. THE ENVIRONMENT IS FAVORABLE FOR 
DEVELOPMENT WITH CONDUCIVE, WARM (28-29 CELSIUS) SEA SURFACE 
TEMPERATURE VALUES AND LOW (5-10 KTS) VERTICAL WIND SHEAR. 
FURTHERMORE, A POINT SOURCE DIRECTLY OVER THE ANALYZED POSITION 
REVEALS SUPPORTIVE, ROBUST DIVERGENCE ALOFT THAT IS CLEARLY EVIDENT 
IN THE ANIMATED MSI LOOP. NUMERICAL MODELS ARE IN AGREEMENT THAT 
INVEST 94W WILL CONTINUE TO TRACK WESTWARD TO NORTHWESTWARD TOWARDS 
GUAM AS IT SLOWLY INTENSIFIES OVER THE NEXT 24 HOURS.  MAXIMUM 
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA 
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR 
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 
HOURS REMAINS 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.//
NNNN