000 WTNT31 KNHC 210852 TCPAT1 BULLETIN HURRICANE IGOR ADVISORY NUMBER 53 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010 500 AM AST TUE SEP 21 2010 ...IGOR LIKELY TO BECOME EXTRATROPICAL LATER TODAY...CENTER IS RAPIDLY APPROACHING SOUTHEASTERN NEWFOUNDLAND... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...42.8N 55.1W ABOUT 285 MI...460 KM SSW OF CAPE RACE NEWFOUNDLAND MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/HR PRESENT MOVEMENT...NE OR 45 DEGREES AT 41 MPH...67 KM/HR MINIMUM CENTRAL PRESSURE...966 MB...28.53 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WATCH IS IN EFFECT FOR... * THE COAST OF NEWFOUNDLAND FROM STONES COVE NORTHWARD AND EASTWARD TO FOGO ISLAND A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE COAST OF NEWFOUNDLAND FROM BURGEO NORTHWARD AND EASTWARD TO TRITON * THE ISLANDS OF ST-PIERRE AND MIQUELON A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 24 HOURS. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 500 AM AST...0900 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED NEAR LATITUDE 42.8 NORTH...LONGITUDE 55.1 WEST. IGOR IS MOVING TOWARD THE NORTHEAST NEAR 41 MPH...67 KM/HR. A TURN TO THE NORTH-NORTHEAST IS EXPECTED LATER TODAY FOLLOWED BY A TURN TOWARD THE NORTH AT A SLOWER FORWARD SPEED ON WEDNESDAY. ON THE FORECAST TRACK...THE CENTER OF THE CYCLONE WILL MOVE NEAR THE SOUTHEASTERN TIP OF NEWFOUNDLAND LATER TODAY. MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/HR...WITH HIGHER GUSTS. IGOR IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. SOME STRENGTHENING IS FORECAST...AND IGOR IS LIKELY TO BECOME AN INTENSE EXTRATROPICAL CYCLONE LATER TODAY. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 85 MILES...140 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 380 MILES...610 KM. CANADIAN BUOY 44141...LOCATED NORTHWEST OF THE CENTER...RECENTLY REPORTED SUSTAINED WINDS OF 56 MPH...90 KM/HR... AND A WIND GUST OF 80 MPH...129 KM/HR. ESTIMATED MINIMUM CENTRAL PRESSURE IS 966 MB...28.53 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...WINDS OF TROPICAL STORM OR GALE FORCE ARE EXPECTED WITHIN THE TROPICAL STORM WARNING AREA TODAY. WINDS OF HURRICANE FORCE ARE POSSIBLE IN THE HURRICANE WATCH AREA. RAINFALL...IGOR IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 4 TO 8 INCHES PRIMARILY OVER THE EASTERN HALF OF NEWFOUNDLAND...WITH ISOLATED AMOUNTS OF 10 INCHES POSSIBLE. SURF...LARGE SWELLS WILL CONTINUE TO AFFECT THE EAST COAST OF THE UNITED STATES THROUGH TODAY AND THE SOUTH-FACING COASTLINES OF NOVA SCOTIA AND NEWFOUNDLAND FOR THE NEXT FEW DAYS. SWELLS WILL BE SLOW TO SUBSIDE IN PUERTO RICO...THE VIRGIN ISLANDS...HISPANIOLA... AND PORTIONS OF THE BAHAMAS DURING THE NEXT COUPLE OF DAYS. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENTS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE FOR ADDITIONAL INFORMATION. NEXT ADVISORY ------------- NEXT INTERMEDIATE ADVISORY...800 AM AST. NEXT COMPLETE ADVISORY...1100 AM AST. $$ FORECASTER BEVEN