WTPQ30 RJTD 251200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.47 FOR EXTRATROPICAL CYCLONE LOCATED AT 31N 126E
1.GENERAL COMMENTS
  CHAMPI (2630) HAS TRANSFORMED INTO AN EXTRATROPICAL CYCLONE. THE
  EXTRATROPICAL CYCLONE IS LOCATED AT 31N, 126E. INFORMATION ON THE
  CURRENT POSITION IS BASED ON ANIMATED MSI AND SURFACE
  OBSERVATIONS. CENTRAL PRESSURE IS 1000HPA AND MAXIMUM SUSTAINED
  WINDS ARE 40KNOTS. THE SYSTEM IS IN AN UNFAVORABLE ENVIRONMENT FOR
  DEVELOPMENT UNDER THE INFLUENCE OF LOW SSTS, LOW TCHP AND DRY AIR.
  HOWEVER, ITS STATE OF EXTRATROPICAL TRANSITION HAS CAUSED IT TO
  MAINTAIN ITS INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON THE
  CURRENT INTENSITY IS BASED ON SURFACE OBSERVATIONS AND SURFACE
  WINDS DATA ESTIMATED FROM SATELLITE SCATTEROMETERS.
2.SYNOPTIC SITUATION
  THE SYSTEM IS MOVING NORTH-NORTHEASTWARD ALONG THE NORTHWESTERN
  PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
  SYSTEM IS ONLY A VORTEX CONSISTING OF LOW-LEVEL CLOUDS. WATER
  VAPOR IMAGERY SHOWS DRY AIR AROUND THE SYSTEM.
3.TRACK FORECAST
  SEE THE MARINE WARNING (WWJP27 RJTD).
4.INTENSITY FORECAST
  SEE THE MARINE WARNING (WWJP27 RJTD).
5.REMARKS
  THIS WILL BE THE FINAL PROGNOSTIC REASONING FOR THE SYSTEM.
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