ZCZC MIAWRKAP4 LOC TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM ANDREW ADVISORY NUMBER 15 NATIONAL WEATHER SERVICE MIAMI FL 11 AM AST THU AUG 20 1992 ...POORLY ORGANIZED ANDREW CONTINUES MOVING TOWARD THE NORTHWEST... AT 11 AM AST...1500Z...THE CENTER OF ANDREW WAS LOCATED NEAR LATITUDE 21.3 NORTH...LONGITUDE 61.3 WEST OR ABOUT 250 MILES ...400 KM...NORTH OF THE NORTHEASTERN LEEWARD ISLANDS. ANDREW IS MOVING TOWARD THE NORTHWEST NEAR 10 MPH ... 17 KM/HR... AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS. MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH... 75 KM/HR...AND LITTLE CHANGE IN STRENGTH IS LIKELY TODAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 85 MILES... 140 KM NORTH... AND 30 MILES...50 KM...SOUTH OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON RECONNAISSANCE DATA FROM AN AIR FORCE RESERVE UNIT AIRCRAFT IS 1015 MB...29.97 INCHES. REPEATING THE 11 AM AST POSITION...21.3 N... 61.3 W. MOVEMENT TOWARD ...NORTHWEST NEAR 10 MPH. MAXIMUM SUSTAINED WINDS... 45 MPH. MINIMUM CENTRAL PRESSURE...1015 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 5 PM AST. GERRISH