000 WTNT31 KNHC 201438 TCPAT1 BULLETIN HURRICANE IGOR ADVISORY NUMBER 50 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010 1100 AM AST MON SEP 20 2010 ...IGOR PULLING AWAY FROM BERMUDA... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...36.1N 63.3W ABOUT 275 MI...445 KM NNE OF BERMUDA ABOUT 900 MI...1450 KM SW OF CAPE RACE NEWFOUNDLAND MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/HR PRESENT MOVEMENT...NNE OR 25 DEGREES AT 24 MPH...39 KM/HR MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * BERMUDA A TROPICAL STORM WATCH IS IN EFFECT FOR... * THE COAST OF NEWFOUNDLAND FROM STONES COVE NORTHWARD AND WESTWARD TO JONES HARBOUR A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 AM AST...1500 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED NEAR LATITUDE 36.1 NORTH...LONGITUDE 63.3 WEST. IGOR IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 24 MPH...39 KM/HR. A TURN TOWARD THE NORTHEAST WITH AN INCREASE IN FORWARD SPEED IS EXPECTED TO BEGIN LATER TODAY AND CONTINUED ACCELERATION IS EXPECTED ON WEDNESDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 75 MPH...120 KM/HR...WITH HIGHER GUSTS. IGOR IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 48 HOURS...AND IGOR IS EXPECTED TO BECOME A STRONG EXTRATROPICAL CYCLONE IN ABOUT A DAY OR SO. IGOR IS A LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 90 MILES...150 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 345 MILES...555 KM. WINDS IN BERMUDA CONTINUE TO DECREASE AS IGOR MOVES FARTHER TO THE NORTH. THE MOST RECENT OBSERVATION FROM THE ISLAND IS A 10-MINUTE SUSTAINED WIND OF 45 MPH...72 KM/HR...AND A GUST TO 52 MPH...83 KM/HR. ESTIMATED MINIMUM CENTRAL PRESSURE IS 960 MB...28.35 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE STILL OCCURRING IN BERMUDA. THESE WINDS WILL GRADUALLY DIMINISH LATER TODAY. STORM SURGE...STORM SURGE IS SUBSIDING BUT SOME COASTAL FLOODING IS STILL POSSIBLE ALONG THE COAST OF BERMUDA TODAY DUE TO LARGE AND DAMAGING WAVES. SURF...LARGE SWELLS WILL CONTINUE TO AFFECT THE EAST COAST OF THE UNITED STATES THROUGH TUESDAY. LARGE SWELLS WILL GRADUALLY 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...200 PM AST. NEXT COMPLETE ADVISORY...500 PM AST. $$ FORECASTER BERG