ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM IVAN ADVISORY NUMBER 9 NATIONAL WEATHER SERVICE MIAMI FL 11 AM AST TUE SEP 22 1998 ...IVAN MOVING TOWARD THE NORTH... AT 11 AM AST...1500Z...THE CENTER OF TROPICAL STORM IVAN WAS LOCATED NEAR LATITUDE 23.6 NORTH...LONGITUDE 36.3 WEST OR ABOUT 840 MILES...1350 KM...WEST-NORTHWEST OF THE CAPE VERDE ISLANDS. IVAN IS MOVING TOWARD THE NORTH NEAR 16 MPH...26 KM/HR. A GRADUAL TURN TOWARD THE NORTH-NORTHWEST AND A DECREASE IN FORWARD SPEED IS POSSIBLE LATER TODAY AND TONIGHT. MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH... 85 KM/HR...WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 24 HOURS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 115 MILES ...185 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1000 MB...29.53 INCHES. REPEATING THE 11 AM AST POSITION...23.6 N... 36.3 W. MOVEMENT TOWARD...NORTH NEAR 16 MPH. MAXIMUM SUSTAINED WINDS... 50 MPH. MINIMUM CENTRAL PRESSURE...1000 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 5 PM AST. RAPPAPORT STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC. NNNN