ABPW10 PGTW 120600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/120600Z-130600ZAUG2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/111951ZAUG2026//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120151ZAUG2026//
NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 11AUG26 1800Z, TROPICAL DEPRESSION 14W (CHAN-HOM) WAS 
LOCATED NEAR 35.8N 137.4E, APPROXIMATELY 79 NM WEST-NORTHWEST OF CAMP 
FUJI, AND HAD TRACKED WESTWARD AT 21 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 
40 KNOTS. SEE REF A (WTPN33 PGTW 112100) FOR THE FINAL WARNING ON THIS 
SYSTEM.
      (2) AT 12AUG26 0000Z, TROPICAL DEPRESSION 13W (PEILOU) WAS 
LOCATED NEAR 29.4N 162.1E, APPROXIMATELY 534 NM NORTHEAST OF MINAMI 
TORI SHIMA, AND HAD TRACKED EAST- NORTHEASTWARD AT 19 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 
KNOTS GUSTING TO 40 KNOTS. SEE REF B (WTPN32 PGTW 120300) FOR FURTHER 
DETAILS.
      (3) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED NEAR 
21.8N 140.8E IS NOW LOCATED NEAR 21.8N 141.9E, APPROXIMATELY 180 NM 
SOUTH-SOUTHEAST OF IWO TO. ANIMATED ENHANCED MULTISPECTRAL IMAGERY 
DEPICTS AN ELONGATED, ILL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) 
BEGINNING TO FORM ALONG THE NORTHERN EDGE OF THE MONSOONAL 
SOUTHWESTERLY FLOW BELT, WITH A LINEAR ARRANGEMENT OF CONVECTION 
DRAPED ACROSS THE CENTER FROM SOUTHWEST TO NORTHEAST. A 112318Z ASCAT-
B SCATTEROMETER PASS SHOWS AN ILL-DEFINED, NASCENT CIRCULATION WITH A 
RADIUS OF MAXIMUM WINDS OF ABOUT 90 NM, WITH MAXIMUM WINDS OF 30-35 
KTS WITHIN THE MONSOON BELT ALONG ITS SOUTHERN PERIPHERY AND LIGHTER 
WINDS OF AROUND 20 KTS IN OTHER QUADRANTS. ENVIRONMENTAL ANALYSIS FOR 
THE AREA INDICATES MARGINALLY FAVORABLE CONDITIONS FOR DEVELOPMENT 
WITH LOW VERTICAL WIND SHEAR (5-10 KTS), WARM SEA SURFACE TEMPERATURES 
(29-30 C), AND STRONG DUAL-CHANNEL OUTFLOW ALOFT. GLOBAL MODELS ARE IN 
GOOD AGREEMENT THAT 91W WILL BECOME MORE SYMMETRIC AND INTENSIFY OVER 
THE NEXT 24 HOURS WHILE MOVING BRISKLY NORTHEASTWARD. MAXIMUM 
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 27 TO 33 KNOTS. MINIMUM SEA 
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 996 MB. THE POTENTIAL FOR THE 
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS 
REMAINS HIGH.
      (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.//
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