2604号热带气旋“森拉克”(04W.Sinlaku)机构发报专帖

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WTPQ50 RJTD 200000
RSMC TROPICAL CYCLONE ADVISORY
NAME  DEVELOPING LOW FORMER TS 2604 SINLAKU (2604)
ANALYSIS
PSTN  200000UTC 30N 158E
MOVE  ENE 20KT
PRES  988HPA
MXWD  050KT
30KT  400NM =

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台風第4号(シンラコウ)
2026年04月20日09時45分発表

20日09時の実況
種別        温帯低気圧
大きさ        -
強さ        -
存在地域        南鳥島近海
中心位置        北緯30度00分 (30.0度)
東経158度00分 (158.0度)
進行方向、速さ        東北東 35 km/h (20 kt)
中心気圧        988 hPa

1. WTPQ30 RJTD 200000
   
2. RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
   
3. REASONING NO.47 FOR EXTRATROPICAL CYCLONE LOCATED AT 30N 158E
   
4. 1.GENERAL COMMENTS
   
5.   SINLAKU (2604) HAS TRANSFORMED INTO AN EXTRATROPICAL CYCLONE. THE
   
6.   EXTRATROPICAL CYCLONE IS LOCATED AT 30N, 158E. INFORMATION ON THE
   
7.   CURRENT POSITION IS BASED ON ANIMATED MSI AND MICROWAVE IMAGERY.
   
8.   CENTRAL PRESSURE IS 988HPA AND MAXIMUM SUSTAINED WINDS ARE
   
9.   50KNOTS. THE SYSTEM IS IN AN UNFAVORABLE ENVIRONMENT FOR
   
10.   DEVELOPMENT UNDER THE INFLUENCE OF LOW SSTS, LOW TCHP AND STRONG
    
11.   VWS. HOWEVER, ITS STATE OF EXTRATROPICAL TRANSITION HAS CAUSED IT
    
12.   TO MAINTAIN ITS INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON
    
13.   THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND
    
14.   SURFACE WINDS DATA ESTIMATED FROM SATELLITE SCATTEROMETERS.
    
15. 2.SYNOPTIC SITUATION
    
16.   THE SYSTEM IS MOVING EAST-NORTHEASTWARD UNDER THE INFLUENCE OF
    
17.   MID-LATITUDE PREVAILING WESTERLIES. ANIMATED MSI SHOWS THE
    
18.   SEPARATION OF ACTIVE CONVECTIVE CLOUD CLUSTERS FROM THE CSC.
    
19.   ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC
    
20.   OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM.
    
21.   GPM/GMI 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM HAS ACTIVE
    
22.   CONVECTIVE CLOUD CLUSTERS AROUND THE CSC.
    
23. 3.TRACK FORECAST
    
24.   SEE THE MARINE WARNING (WWJP27 RJTD).
    
25. 4.INTENSITY FORECAST
    
26.   SEE THE MARINE WARNING (WWJP27 RJTD).
    
27. 5.REMARKS
    
28.   THIS WILL BE THE FINAL PROGNOSTIC REASONING FOR THE SYSTEM.
    
29. =

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