ZCZC MIATCDAT4 ALL TTAA00 KNHC DDHHMM TROPICAL STORM SEAN DISCUSSION NUMBER 14 NWS NATIONAL HURRICANE CENTER MIAMI FL AL192011 1100 AM AST FRI NOV 11 2011 SEAN IS A STRONGLY SHEARED TROPICAL CYCLONE WITH THE LOW-LEVEL CENTER LOCATED ABOUT 70 N MI TO THE WEST OF THE SHRINKING DENSE OVERCAST. SATELLITE INTENSITY ESTIMATES FROM TAFB AND SAB HAVE DECREASED... AND THE INITIAL WIND SPEED IS LOWERED TO 45 KT. A COLD FRONT... CURRENTLY SITUATED A COUPLE OF HUNDRED N MI TO THE WEST OF SEAN...IS EXPECTED TO MERGE WITH THE CYCLONE LATER TODAY CAUSING IT TO LOSE TROPICAL CHARACTERISTICS BY THEN. THE TROPICAL STORM IS GAINING FORWARD SPEED...AND THE LATEST INITIAL MOTION ESTIMATE IS 050/20. THE CENTER OF SEAN IS CURRENTLY PASSING JUST NORTH OF BERMUDA...AND IT IS EXPECTED TO MOVE MORE RAPIDLY NORTHEASTWARD OVER THE NORTH ATLANTIC UNTIL IT DISSIPATES TONIGHT OR EARLY SATURDAY. FORECAST POSITIONS AND MAX WINDS INIT 11/1500Z 34.0N 64.1W 45 KT 50 MPH 12H 12/0000Z 37.2N 59.9W 45 KT 50 MPH...POST-TROP/EXTRATROP 24H 12/1200Z...DISSIPATED $$ FORECASTER CANGIALOSI/STEWART NNNN
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