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ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM GERT ADVISORY NUMBER 48 NATIONAL WEATHER SERVICE MIAMI FL 5 AM AST THU SEP 23 1999 ...GERT WEAKENS TO A TROPICAL STORM...APPROACHING THE AVALON PENINSULA OF NEWFOUNDLAND... STORM AND HURRICANE FORCE WIND WARNINGS REMAIN IN EFFECT FOR PORTIONS OF THE MARITIME AREAS SOUTH AND EAST OF NEWFOUNDLAND. SEE STATEMENTS FROM THE CANADIAN HURRICANE CENTER FOR FURTHER INFORMATION. AT 5 AM AST...0900Z...THE POORLY-DEFINED CENTER OF TROPICAL STORM GERT WAS LOCATED NEAR LATITUDE 45.7 NORTH...LONGITUDE 53.6 WEST OR ABOUT 135 MILES...220 KM...SOUTH-SOUTHWEST OF ST. JOHNS NEWFOUNDLAND. GERT IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 28 MPH...44 KM/HR... AND THIS MOTION IS EXPECTED TO CONTINUE TODAY. ON THIS TRACK GERT WILL PASS JUST TO THE EAST OF THE AVALON PENINSULA OF NEWFOUNDLAND DURING THE NEXT FEW HOURS. MAXIMUM SUSTAINED WINDS ARE NEAR 70 MPH...110 KM/HR...WITH HIGHER GUSTS. GERT IS LOSING ITS TROPICAL CHARACTERISTICS AND WILL BECOME EXTRATROPICAL LATER TODAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES ...370 KM...MAINLY EAST OF THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 967 MB...28.56 INCHES. REPEATING THE 5 AM AST POSITION...45.7 N... 53.6 W. MOVEMENT TOWARD...NORTH NORTHEAST NEAR 28 MPH. MAXIMUM SUSTAINED WINDS... 70 MPH. MINIMUM CENTRAL PRESSURE... 967 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 11 AM AST. FRANKLIN STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC. NNNN