ABPW10 PGTW 180600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS/180600Z-190600ZJAN2022//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   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:
      (1) THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED 
NEAR 20.1S 163.5W IS NOW LOCATED NEAR 20.1S 167.1W, APPROXIMATELY 
402 NM SOUTH-SOUTHEAST OF PAGO PAGO, AMERICAN SAMOA. ANIMATED 
MULTISPECTRAL SATELLITE IMAGERY AND A 180412Z SSMIS 91GHZ COLOR 
COMPOSITE MICROWAVE IMAGE SHOW A DEFINED, FULLY-EXPOSED LOW LEVEL 
CIRCULATION CENTER (LLCC) WITH TIGHTLY-WRAPPED SHALLOW BANDS. A 
172120Z SCATTEROMETER IMAGE SHOWS A CLOSED CIRCULATION WITH 25-30KT 
GRADIENT WINDS ON THE SOUTH SIDE AND 15-20 KT WINDS TO THE NORTH OF 
THE LLCC. IN GENERAL, ENVIRONMENTAL CONDITIONS ARE UNFAVORABLE. THE 
SYSTEM IS CURRENTLY LOCATED ON THE WESTERN SIDE OF AN UPPER LEVEL 
TROUGH WITH CONVERGENCE ALOFT, WHICH IS PRODUCING LARGE-SCALE 
SUBSIDENCE, AND HIGH VERTICAL WIND SHEAR (30-40KTS). ANALYSIS OF THE 
MOISTURE ENVIRONMENT REVEALS EXTENSIVE DRY AIR ENTRAINMENT 
DOMINATING THE MID-UPPER LEVELS. SEA SURFACE TEMPERATURES (28-29C) 
REMAIN CONDUCIVE. GLOBAL MODELS ARE STILL IN AGREEMENT WITH THE 
SYSTEM TRACKING WESTWARD OVER THE NEXT 24-48 HOURS WITH LITTLE 
DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 
25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1001 
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.//
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