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JTWC PH
JTWC FACEBOOK
Joint Typhoon Warning Center
National Hurricane Center
ABPW10 PGTW 111800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS REISSUED/111800Z-120600ZSEP2026//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION (INVEST 98W) HAS PERSISTED NEAR 13.6N
111.8E, APPROXIMATELY 251 NM SOUTHEAST OF DA NANG VIETNAM. ENHANCED
INFRARED IMAGERY (EIR) AND A 111348Z METOP B 89GHZ MICROWAVE IMAGE
DEPICT A BROAD AREA OF TURNING WITH DEEP FLARING CONVECTION THAT IS
DISPLACED TO THE NORTHWEST MOSTLY NEAR HAINAN ISLAND. CURRENT ANALYSIS
INDICATES A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (5-10KT)
VERTICAL WIND SHEAR, GOOD POLEWARD AND WESTWARD OUTFLOW AND OVERALL
WARM SEA SURFACE TEMPERATURES (28-30C). GLOBAL DETERMINISTIC MODELS ARE
IN GOOD AGREEMENT THAT 98W WILL CONTINUE TO CONSOLIDATE OVER THE NEXT
24-48 HOURS AND TRACK GENERALLY WESTWARD. THERE REMAINS UNCERTAINTY ON
WHETHER THE BROAD SYSTEM CAN CONSOLIDATE BEFORE MAKING LANDFALL OVER
VIETNAM. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 TO 18
KNOTS, THOUGH THE WINDS ASSOCIATED A NORTHEASTERLY SURGE OFF THE
SOUTHERN COAST OF HAINAN ISLAND ARE AT 25-30 KTS. 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 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.
3. JUSTIFICATION FOR REISSUE: ADDED LOW AREA IN PARA 1.B.(1) AS LOW.//
NNNN
JTWC FACEBOOK
Joint Typhoon Warning Center
National Hurricane Center
ABPW10 PGTW 111800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS REISSUED/111800Z-120600ZSEP2026//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION (INVEST 98W) HAS PERSISTED NEAR 13.6N
111.8E, APPROXIMATELY 251 NM SOUTHEAST OF DA NANG VIETNAM. ENHANCED
INFRARED IMAGERY (EIR) AND A 111348Z METOP B 89GHZ MICROWAVE IMAGE
DEPICT A BROAD AREA OF TURNING WITH DEEP FLARING CONVECTION THAT IS
DISPLACED TO THE NORTHWEST MOSTLY NEAR HAINAN ISLAND. CURRENT ANALYSIS
INDICATES A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (5-10KT)
VERTICAL WIND SHEAR, GOOD POLEWARD AND WESTWARD OUTFLOW AND OVERALL
WARM SEA SURFACE TEMPERATURES (28-30C). GLOBAL DETERMINISTIC MODELS ARE
IN GOOD AGREEMENT THAT 98W WILL CONTINUE TO CONSOLIDATE OVER THE NEXT
24-48 HOURS AND TRACK GENERALLY WESTWARD. THERE REMAINS UNCERTAINTY ON
WHETHER THE BROAD SYSTEM CAN CONSOLIDATE BEFORE MAKING LANDFALL OVER
VIETNAM. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 TO 18
KNOTS, THOUGH THE WINDS ASSOCIATED A NORTHEASTERLY SURGE OFF THE
SOUTHERN COAST OF HAINAN ISLAND ARE AT 25-30 KTS. 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 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.
3. JUSTIFICATION FOR REISSUE: ADDED LOW AREA IN PARA 1.B.(1) AS LOW.//
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