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ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN HURRICANE GERT ADVISORY NUMBER 10 NATIONAL WEATHER SERVICE MIAMI FL 5 PM AST MON SEP 13 1999 ..HURRICANE GERT...A LITTLE BIT STRONGER...MOVING WESTWARD OVER THE TROPICAL ATLANTIC.. AT 5 PM AST...2100Z...THE CENTER OF HURRICANE GERT WAS LOCATED NEAR LATITUDE 16.0 NORTH...LONGITUDE 41.6 WEST OR ABOUT 1300 MILES... 2100 KM...EAST OF THE LEEWARD ISLANDS. GERT IS MOVING TOWARD THE WEST NEAR 18 MPH...30 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE DURING THE NEXT 24 HOURS. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 85 MPH...140 KM/HR...WITH HIGHER GUSTS. GERT IS FORECAST TO STRENGTHEN DURING THE NEXT FEW DAYS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES... 45 KM... FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 115 MILES...185 KM. ESTIMATED MINIMUM CENTRAL PRESSURE IS 979 MB...28.91 INCHES. REPEATING THE 5 PM AST POSITION...16.0 N... 41.6 W. MOVEMENT TOWARD...WEST NEAR 18 MPH. MAXIMUM SUSTAINED WINDS... 85 MPH. MINIMUM CENTRAL PRESSURE... 979 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