斐济以西三级强热带气旋“韦亚努”(11F/31P.Vaianu) - 南下快速发展 - FMS:85KT JTWC:100KT

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ABPW10 PGTW 120600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH PACIFIC OCEANS/120600Z-130600ZAPR2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120151ZAPR2026//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 12APR26 0000Z, TYPHOON 04W (SINLAKU) WAS LOCATED NEAR 9.9N 151.2E, APPROXIMATELY 440 NM EAST-SOUTHEAST OF NAVSTA GUAM, AND HAD TRACKED NORTH-NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 110 KNOTS GUSTING TO 135 KNOTS. SEE REF A (WTPN31 PGTW 120300) 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:
      (1) THE AREA OF CONVECTION (INVEST 31P) PREVIOUSLY LOCATED NEAR  34.9S 176.9E IS NOW LOCATED NEAR 37.2S 176.5E, APPROXIMATELY 85.6 NM EAST-SOUTHEAST OF AUCKLAND, NEW ZEALAND. THE SYSTEM IS CURRENTLY CLASSIFIED AS A SUBTROPICAL CYCLONE, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL AND MIDLATITUDE CYCLONE FEATURES. ANIMATED ENHANCED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS A VERY BROAD AND ELONGATED LOW-LEVEL CIRCULATION CENTER (LLCC) EMBEDDED WITHIN A SWIRL OF MID-LEVEL CLOUD BANDS APPEARING TO BECOME SHEARED AWAY IN THE UPPER LEVELS BY THE POLAR FRONT JET STREAM. ENVIRONMENTAL ANALYSIS REVEALS UNFAVORABLE CONDITIONS FOR DEVELOPMENT CHARACTERIZED BY LOW TO MODERATE VERTICAL WIND SHEAR (15-20 KNOTS), MODERATE UPPER LEVEL POLEWARD OUTFLOW, AND COLD SEA SURFACE TEMPERATURES (23-24 C) ALONG THE COAST. GLOBAL MODELS AGREE ON A SOUTHEASTWARD TRACK OVER THE NEXT 24-36 HOURS AS IT TRANSITS THE EASTERN PORTION OF NEW ZEALAND’S NORTH ISLAND, TE IKA-A-MAUI. FOR HAZARDS AND WARNINGS, REFERENCE THE FLEET WEATHER CENTER SAN DIEGO HIGH WINDS AND SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED FORECAST AUTHORITY. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 38 TO 43 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 993 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.
      (2) NO OTHER SUBTROPICAL SYSTEMS.//
NNNN

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GALE WARNING 260
THIS AFFECTS OCEAN AREAS: SUBTROPIC AND FORTIES
AT 120600UTC
LOW 980HPA, FORMER CYCLONE VAIANU, NEAR 39S 177E MOVING
SOUTHSOUTHEAST 20KT.
WITHIN 300 NAUTICAL MILES OF LOW: CLOCKWISE 40KT.
GALE AREA MOVING WITH LOW.
THIS WARNING CANCELS AND REPLACES WARNING 253.