655 
 WTNT44 KNHC 022033
 TCDAT4
 TROPICAL DEPRESSION GASTON DISCUSSION NUMBER   6
 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL092010
 500 PM AST THU SEP 02 2010
  
 CONVENTIONAL SATELLITE IMAGERY AND DROPSONDES FROM THE NATIONAL
 SCIENCE FOUNDATION G-V AIRCRAFT INDICATE THAT GASTON HAS
 DEGENERATED INTO A REMNANT LOW PRESSURE AREA.  THE SYSTEM CONSISTS
 OF A WEAK LOW-LEVEL CIRCULATION WITHOUT ORGANIZED DEEP CONVECTION.
 MAXIMUM WINDS ARE ESTIMATED TO BE 25 KT...AND THESE WINDS ARE LIKELY
 OCCURRING ONLY IN A SMALL AREA OF SHOWERS WELL TO THE NORTH OF THE
 CENTER.
  
 THE REMNANT LOW IS SITUATED TO THE SOUTH OF A WEAKNESS IN THE
 SUBTROPICAL RIDGE...AND IS DRIFTING WESTWARD.  THE LARGE-SCALE
 MODELS PREDICT SOME BUILDING OF RIDGE TO THE NORTH OF THE CYCLONE
 OVER THE NEXT FEW DAYS. THEREFORE...THE OFFICIAL FORECAST TRACK
 INDICATES A CONTINUED GENERAL WESTWARD MOTION WITH A GRADUAL
 INCREASE IN FORWARD SPEED.
 
 ALTHOUGH NOT EXPLICITLY INDICATED HERE...THERE IS A POSSIBILITY THAT
 GASTON COULD REGENERATE INTO A TROPICAL CYCLONE DURING THE FORECAST
 PERIOD.  THIS IS THE SCENARIO THAT IS BEING SUGGESTED BY SOME OF THE
 GLOBAL MODELS. 
  
 FORECAST POSITIONS AND MAX WINDS
  
 INITIAL      02/2100Z 13.5N  39.5W    25 KT
  12HR VT     03/0600Z 13.5N  40.4W    25 KT...POST-TROP/REMNT LOW
  24HR VT     03/1800Z 13.7N  41.7W    25 KT...POST-TROP/REMNT LOW
  36HR VT     04/0600Z 14.0N  43.0W    25 KT...POST-TROP/REMNT LOW
  48HR VT     04/1800Z 14.2N  44.4W    25 KT...POST-TROP/REMNT LOW
  72HR VT     05/1800Z 14.5N  48.0W    25 KT...POST-TROP/REMNT LOW
  96HR VT     06/1800Z 15.0N  52.5W    25 KT...POST-TROP/REMNT LOW
 120HR VT     07/1800Z 15.5N  57.5W    25 KT...POST-TROP/REMNT LOW
  
 $$
 FORECASTER ROBERTS/PASCH