ABPW10 PGTW 240600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/240600Z-250600ZMAR2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/240151ZMAR2026//
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: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 24MAR26 0000Z, TROPICAL CYCLONE 28P (TWENTYEIGHT) WAS 
LOCATED NEAR 23.6S 163.8E, APPROXIMATELY 156 NM SOUTHWEST OF NOUMEA, 
NEW CALEDONIA, AND HAD TRACKED SOUTHWARD AT 22 KNOTS OVER THE PAST SIX 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 45 KNOTS 
GUSTING TO 55 KNOTS. SEE REF A (WTPS31 PGTW 240300) FOR THE FINAL 
WARNING ON THIS SYSTEM.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (SS 28P) PREVIOUSLY LOCATED NEAR 
23.6S 163.8E IS NOW LOCATED NEAR 26.9S 163.7E, APPROXIMATELY 310 NM 
SOUTH-SOUTHWEST OF NOUMEA. THE SYSTEM IS CURRENTLY CLASSIFIED AS A 
SUBTROPICAL CYCLONE, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL 
AND MIDLATITUDE CYCLONE FEATURES. ANIMATED ENHANCED MULTISPECTRAL 
SATELLITE IMAGERY DEPICTS A WEAK FRONTAL SYSTEM WITH FLARING 
CONVECTION LOCATED JUST POLEWARD AND EASTWARD OF THE LOW-LEVEL 
CIRCULATION CENTER (LLCC). THE SYSTEM HAS CONTINUED TO BE SHEARED TO 
THE SOUTH-SOUTHEAST, WITH THE LLCC BECOMING ONLY PARTIALLY OBSCURED 
ALONG THE PRIMARY CONVECTIVE STRUCTURES, VERY TYPICAL OF A SUBTROPICAL 
CYCLONE. ENVIRONMENTAL ANALYSIS REVEALS UNFAVORABLE CONDITIONS FOR 
TROPICAL TRANSITION MOVING FORWARD, DEFINED BY A DEEP LAYER, MID-LEVEL 
DRY AIR BEING ENTRAINED THROUGHOUT THE SYSTEMS CORE, STRONG NORTH-
NORTHWESTERLIES ALOFT, HIGH VERTICAL WIND SHEAR (VWS) OF 40-50 KTS, 
AND COOLING SEA SURFACE TEMPERATURES OF 25-26 C. GLOBAL MODELS ARE IN 
AGREEMENT THAT SUBTROPICAL CYCLONE 28P WILL TRACK SOUTHWARD AS THE 
BROAD AND ASYMMETRIC WIND FIELD CONTINUES TO EXPAND AS THE SYSTEM 
TRANSITS SOUTH. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 37 TO 
42 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 999 MB. 
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS REMAINS LOW.
      (2) NO OTHER SUBTROPICAL SYSTEMS.//
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