From Mike Powell@1:2320/107 to All on Sun Sep 6 15:03:18 2026
ABPW10 PGTW 061200
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS REISSUED/061200Z-070600ZSEP2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/060751ZSEP2026//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY:
(1) AT 06SEP26 0600Z, TROPICAL DEPRESSION 22W (KROVANH) WAS
LOCATED NEAR 25.5N 130.2E, APPROXIMATELY 143 NM EAST-SOUTHEAST OF KADENA
AB, AND HAD TRACKED EASTWARD AT 08 KNOTS OVER THE PAST SIX HOURS.
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 40 KNOTS. SEE REF A (WTPN31 PGTW 060900) FOR FURTHER DETAILS.
(2) NO OTHER TROPICAL CYCLONES.
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: NONE.
C. SUBTROPICAL SYSTEM SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: REMOVED 23W INFORMATION DUE TO FINAL
WARNING EXPIRATION.//
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From Mike Powell@1:2320/107 to All on Tue Sep 8 15:02:30 2026
ABPW10 PGTW 080600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS/080600Z-090600ZSEP2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/080151ZSEP2026//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY:
(1) AT 08SEP26 0000Z, TROPICAL DEPRESSION 22W (KROVANH) WAS
LOCATED NEAR 30.3N 132.6E, APPROXIMATELY 224 NM SOUTHEAST OF SASEBO,
JAPAN, AND HAD TRACKED NORTH- NORTHWESTWARD AT 12 KNOTS OVER THE PAST
SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS
GUSTING TO 40 KNOTS. SEE REF A (WTPN31 PGTW 080300) FOR FURTHER
DETAILS.
(2) NO OTHER TROPICAL CYCLONES.
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: NONE.
C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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From Mike Powell@1:2320/107 to All on Wed Sep 9 18:50:38 2026
ABPW10 PGTW 090900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS REISSUED/090900Z-100600ZSEP2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/090751ZSEP2026//
AMPN/REF A IS A TROPICAL CYCLONE FINAL WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY:
(1) AT 09SEP26 0600Z, TROPICAL DEPRESSION 22W (KROVANH) WAS
LOCATED NEAR 34.3N 135.9E, APPROXIMATELY 187 NM WEST-SOUTHWEST OF
ATSUGI, JAPAN, AND HAD TRACKED EAST-NORTHEASTWARD AT 14 KNOTS OVER THE
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 25
KNOTS GUSTING TO 35 KNOTS. SEE REF A (WTPN31 PGTW 090900) FOR THE
FINAL WARNING ON THIS SYSTEM.
(2) NO OTHER TROPICAL CYCLONES.
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: NONE.
C. SUBTROPICAL SYSTEM SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: UPDATED PARA.1.A.(1) WITH 22W FINAL
WARNING INFORMATION.//
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From Mike Powell@1:2320/107 to All on Sat Sep 12 14:36:06 2026
ABPW10 PGTW 121330
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH
PACIFIC OCEANS REISSUED/121300Z-130600ZSEP2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/121321ZSEP2026//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
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 98W) PREVIOUSLY LOCATED NEAR
15.6N 110.7E IS NOW LOCATED NEAR 17.0N 109.7E, APPROXIMATELY 104 NM
NORTHEAST OF DA NANG, VIETNAM. ANIMATED ENHANCED INFRARED (EIR) DEPICTS
A BROAD AREA OF DISORGANIZED DEEP CONVECTION ASSOCIATED WITH A SLOWLY CONSOLIDATING LOW-LEVEL CIRCULATION CENTER (LLCC). THE LLCC REMAINS
BROAD AND ELONGATED, WITH THE WESTERN EXTENT OF THE CIRCULATION LIKELY EXTENDING OVER LAND. CURRENT ANALYSIS OF THE SURROUNDING ENVIRONMENT
INDICATES FAVORABLE CONDITIONS FOR FURTHER CONSOLIDATION WITH LOW (5-10
KTS) VERTICAL WIND SHEAR, STRONG EQUATORWARD OUTFLOW ALOFT, WARM (28-29
C) SEA SURFACE TEMPERATURES, AND SUFFICIENT MOISTURE THROUGHOUT THE AIR COLUMN. GLOBAL DETERMINISTIC MODELS ARE IN GOOD AGREEMENT THAT 98W WILL
TRACK GENERALLY NORTHWESTWARD, SKIRTING THE COAST OF VIETNAM,
POTENTIALLY REACHING TROPICAL DEPRESSION CRITERIA DURING THE NEXT 12-24
HOURS. THERE REMAINS SIGNIFICANT UNCERTAINTY AS TO WHETHER THE BROAD
SYSTEM CAN ORGANIZE BEFORE IT MAKES LANDFALL IN VIETNAM AND TRANSITS
INLAND. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 23 TO 28 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN
THE NEXT 24 HOURS IS HIGH. SEE REF A (WTPN21 PGTW 121330) FOR FURTHER
DETAILS.
(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: UPGRADED AREA IN PARA 1.B.(1) TO HIGH.//
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