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ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN HURRICANE GERT ADVISORY NUMBER 45 NATIONAL WEATHER SERVICE MIAMI FL 11 AM AST WED SEP 22 1999 ...GERT EXPECTED TO PASS NEAR THE AVALON PENINSULA...NEWFOUNDLAND... A STORM AND HURRICANE FORCE WIND WARNINGS ARE IN EFFECT FOR SOME OF THE MARITIME AREAS SOUTH AND EAST OF NEWFOUNDLAND. SEE STATEMENTS FROM THE CANADIAN HURRICANE CENTER. AT 11 AM AST...1500Z...THE CENTER OF HURRICANE GERT WAS LOCATED NEAR LATITUDE 39.5 NORTH...LONGITUDE 58.7 WEST OR ABOUT 550 MILES... 900 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 DURING THE NEXT 24 HOURS WITH A GRADUAL INCREASE IN FORWARD SPEED. ON THIS TRACK GERT SHOULD PASS NEAR THE AVALON PENINSULA WITHIN THE NEXT 12 TO 24 HOURS. MAXIMUM SUSTAINED WINDS ARE NEAR 85 MPH...140 KM/HR...WITH HIGHER GUSTS. SOME WEAKENING IS FORECAST DURING THE NEXT 24 HOURS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM... FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 260 MILES...415 KM. ESTIMATED MINIMUM CENTRAL PRESSURE IS 967 MB...28.56 INCHES. HEAVY RAINS ARE EXPECTED OVER PORTIONS OF THE AVALON PENINSULA. REPEATING THE 11 AM AST POSITION...39.5 N... 58.7 W. MOVEMENT TOWARD...NORTH NORTHEAST NEAR 28 MPH. MAXIMUM SUSTAINED WINDS... 85 MPH. MINIMUM CENTRAL PRESSURE... 967 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 5 PM AST. AVILA STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC. NNNN