631 
 WTNT44 KNHC 110845
 TCDAT4
  
 TROPICAL STORM SEAN DISCUSSION NUMBER  13
 NWS NATIONAL HURRICANE CENTER MIAMI FL       AL192011
 500 AM AST FRI NOV 11 2011
 
 SEAN IS SHOWING A SHEARED CLOUD PATTERN IN INFRARED AND TRMM
 MICROWAVE SATELLITE IMAGERY THIS MORNING...WITH THE LOW-LEVEL
 CENTER NEAR THE WESTERN EDGE OF THE CONVECTIVE OVERCAST.  WHILE
 SUBJECTIVE SATELLITE INTENSITY ESTIMATES FROM SAB AND TAFB ARE
 UNCHANGED SINCE THE PREVIOUS ADVISORY...INTENSITY ESTIMATES FROM
 THE AMSU MICROWAVE SOUNDER AND THE CIMSS ADVANCED DVORAK TECHNIQUE
 HAVE DECREASED A LITTLE DURING THE PAST 6-12 HOURS.  IN ADDITION...
 AN ASCAT OVERPASS NEAR 0200 UTC SHOWED WINDS NEAR 45 KT IN THE
 SOUTHEASTERN QUADRANT.  BASED ON THESE DATA...THE INITIAL INTENSITY
 IS DECREASED TO 50 KT.  LITTLE CHANGE IN STRENGTH IS LIKELY BEFORE
 SEAN GETS ABSORBED BY A FRONTAL SYSTEM IN 18-24 HOURS.
 
 SEAN IS ACCELERATING TOWARD THE NORTHEAST ON THE SOUTH SIDE OF A
 DEVELOPING DEEP-LAYER CYCLONE OVER NEW ENGLAND AND THE CANADIAN
 MARITIMES...WITH THE INITIAL MOTION NOW 050/19.  AN EVEN FASTER
 MOTION TOWARD THE NORTHEAST IS EXPECTED DURING THE REMAINDER OF THE
 LIFE OF THE CYCLONE.
 
 THE WIND RADII HAVE BEEN REVISED BASED ON THE ASCAT DATA.
  
 FORECAST POSITIONS AND MAX WINDS
  
 INIT  11/0900Z 32.9N  66.3W   50 KT  60 MPH
  12H  11/1800Z 35.2N  62.8W   50 KT  60 MPH
  24H  12/0600Z...ABSORBED BY FRONTAL SYSTEM.
  
 $$
 FORECASTER BEVEN