ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM IVAN ADVISORY NUMBER 4 NATIONAL WEATHER SERVICE MIAMI FL 5 AM AST MON SEP 21 1998 ...IVAN MOVING WEST-NORTHWEST IN CENTRAL ATLANTIC... AT 5 AM AST...0900Z...THE CENTER OF TROPICAL STORM IVAN WAS LOCATED NEAR LATITUDE 17.4 NORTH...LONGITUDE 35.3 WEST OR ABOUT 660 MILES...1065 KM...WEST OF THE CAPE VERDE ISLANDS. IVAN IS MOVING TOWARD THE WEST NORTHWEST NEAR 14 MPH ...22 KM/HR...AND THIS MOTION IS EXPECTED TO FOR THE NEXT 24 HOURS. MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH... 65 KM/HR...WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 12 HOURS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 45 MILES ... 75 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB...29.68 INCHES. REPEATING THE 5 AM AST POSITION...17.4 N... 35.3 W. MOVEMENT TOWARD...WEST NORTHWEST NEAR 14 MPH. MAXIMUM SUSTAINED WINDS... 40 MPH. MINIMUM CENTRAL PRESSURE...1005 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 11 AM AST. JARVINEN STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC. NNNN