West Pacific Tropical Cyclone Tracking

Tropical Storm SEPAT Tracking

1. TROPICAL STORM 02W (SEPAT) WARNING NR 007    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   240000Z --- NEAR 29.3N 141.0E
     MOVEMENT PAST SIX HOURS - 320 DEGREES AT 12 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT
                            095 NM SOUTHEAST QUADRANT
                            000 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   REPEAT POSIT: 29.3N 141.0E

ABPW10 PGTW 240600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/240600Z-250600ZJUN2025//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/240151ZJUN2025//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 24JUN25 0000Z, TROPICAL STORM 02W (SEPAT) WAS LOCATED 
NEAR 29.3N 141.0E, APPROXIMATELY 366 NM SOUTH OF YOKOSUKA, JAPAN, AND 
HAD TRACKED NORTHWESTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS GUSTING TO 
45 KNOTS. SEE REF A (WTPN31 PGTW 240300) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 96W) PREVIOUSLY LOCATED NEAR 
14.4N 118.7E IS NOW LOCATED NEAR 15.8N 116.7E, APPROXIMATELY 415 NM 
SOUTH-SOUTHEAST OF HONG KONG. MULTISPECTRAL SATELLITE IMAGERY 
(MSI) DEPICTS A BROAD, SLOWLY CONSOLIDATING LOW LEVEL CIRCULATION 
CENTER (LLCC) WITH WEAKLY FLARING CONVECTION. A RECENT 240308Z GMI 89 
GHZ MICROWAVE PASS SHOWS THE BROAD NATURE OF THE SYSTEMS STRUCTURE 
AND FRAGMENTED CONVECTIVE BANDING. A RECENT 240400Z SHIP OBSERVATION 
TO THE SOUTHWEST OF THE CIRCULATION REVEALS 17KT NORTH-NORTHWESTERLY 
WINDS. ENVIRONMENTAL ANALYSIS INDICATES FAVORABLE CONDITIONS FOR 
DEVELOPMENT WITH GOOD VERTICAL WIND SHEAR (VWS) OF 10-15 KNOTS, GOOD 
POLEWARD UPPER-LEVEL OUTFLOW, AND WARM SEA SURFACE TEMPERATURES (SST) 
OF 29-30C. DETERMINISTIC AND ENSEMBLE MODELS ARE SPLIT ON DEVELOPMENT 
LIKELIHOOD OVER THE NEXT 24 TO 48 HOURS. DETERMINISTIC MODELS 
FORECAST 96W TO ONLY REACH WINDS UP TO 20 KNOTS, WHEREAS ENSEMBLE 
GUIDANCE SHOWS MULTIPLE MEMBERS REACHING 25 KNOTS AND HIGHER. MAXIMUM 
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 KNOTS. MINIMUM SEA 
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE 
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 
HOURS REMAINS MEDIUM.
      (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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