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| #113958 (Received by flhurricane at: 10:55 PM 01.Oct.2006) TCPAT4 BULLETIN HURRICANE ISAAC ADVISORY NUMBER 18 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL092006 1100 PM AST SUN OCT 01 2006 ...ISAAC WEAKENS SLIGHTLY AS IT ACCELERATES TOWARD NEWFOUNDLAND... A TROPICAL STORM WATCH REMAINS IN EFFECT FOR THE AVALON PENINSULA OF NEWFOUNDLAND...WHICH INCLUDES CAPE RACE AND THE CITY OF ST. JOHNS. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE. AT 1100 PM AST...0300Z...THE CENTER OF HURRICANE ISAAC WAS LOCATED NEAR LATITUDE 38.6 NORTH...LONGITUDE 58.8 WEST OR ABOUT 630 MILES... 1015 KM...SOUTH-SOUTHWEST OF CAPE RACE NEWFOUNDLAND. ISAAC IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 26 MPH...43 KM/HR... AND A TURN TOWARD THE NORTHEAST WITH AN INCREASE IN FORWARD SPEED IS EXPECTED DURING THE NEXT 24 HOURS. ON THIS TRACK...THE CENTER OF ISAAC IS EXPECTED TO MOVE OVER OR NEAR NEWFOUNDLAND CANADA LATE TOMORROW. HOWEVER...WINDS OF TROPICAL STORM FORCE COULD BEGIN WITHIN THE WATCH AREA WELL IN ADVANCE OF THE CENTER. MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/HR...WITH HIGHER GUSTS. ISAAC IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON SCALE. GRADUAL WEAKENING IS FORECAST DURING THE NEXT 24 HOURS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 25 MILES...35 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM...MAINLY NORTH AND EAST OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 989 MB...29.21 INCHES. REPEATING THE 1100 PM AST POSITION...38.6 N...58.8 W. MOVEMENT TOWARD...NORTH-NORTHEAST NEAR 26 MPH. MAXIMUM SUSTAINED WINDS...75 MPH. MINIMUM CENTRAL PRESSURE...989 MB. AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 200 AM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 500 AM AST. $$ FORECASTER RHOME/KNABB |
