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ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN HURRICANE GERT ADVISORY NUMBER 26 NATIONAL WEATHER SERVICE MIAMI FL 5 PM AST FRI SEP 17 1999 ...SEVERE HURRICANE GERT...A POTENTIAL THREAT TO BERMUDA... INTERESTS IN BERMUDA SHOULD MONITOR THE PROGRESS OF GERT OVER THE WEEKEND... AT 5 PM AST...2100Z...THE CENTER OF HURRICANE GERT WAS LOCATED NEAR LATITUDE 20.5 NORTH...LONGITUDE 56.8 WEST OR ABOUT 950 MILES... 1535 KM...SOUTH-SOUTHEAST OF BERMUDA. GERT IS MOVING TOWARD THE NORTHWEST NEAR 9 MPH...15 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE DURING THE NEXT 24 HOURS. ON THIS PATH...GERT WILL BE MOVING WELL NORTH OF THE LEEWARD ISLANDS ON SATURDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 130 MPH...215 KM/HR...WITH HIGHER GUSTS. SOME FLUCTUATIONS IN INTENSITY ARE LIKELY DURING THE NEXT 24 HOURS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 120 MILES...195 KM... FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES...370 KM. ESTIMATED MINIMUM CENTRAL PRESSURE IS 952 MB...28.11 INCHES. REPEATING THE 5 PM AST POSITION...20.5 N... 56.8 W. MOVEMENT TOWARD...NORTHWEST NEAR 9 MPH. MAXIMUM SUSTAINED WINDS...130 MPH. MINIMUM CENTRAL PRESSURE... 952 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 11 PM AST. AVILA STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC. NNNN