000 WTNT31 KNHC 111445 TCPAT1 BULLETIN TROPICAL STORM IGOR ADVISORY NUMBER 13 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010 1100 AM AST SAT SEP 11 2010 ...IGOR EXPECTED TO BECOME A HURRICANE BY TONIGHT... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...17.4N 39.5W ABOUT 1030 MI...1660 KM W OF THE CAPE VERDE ISLANDS ABOUT 1470 MI...2365 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/HR PRESENT MOVEMENT...W OR 275 DEGREES AT 20 MPH...32 KM/HR MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 AM AST...1500 UTC...THE CENTER OF TROPICAL STORM IGOR WAS LOCATED NEAR LATITUDE 17.4 NORTH...LONGITUDE 39.5 WEST. IGOR IS MOVING TOWARD THE WEST NEAR 20 MPH...32 KM/HR...AND THIS GENERAL MOTION WITH SOME DECREASE IN FORWARD SPEED IS EXPECTED FOR THE NEXT 48 HOURS. MAXIMUM SUSTAINED WINDS REMAIN NEAR 70 MPH...110 KM/HR...WITH HIGHER GUSTS. STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...AND IGOR IS EXPECTED TO BECOME A HURRICANE THIS WEEKEND. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 115 MILES...185 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 995 MB...29.38 INCHES. HAZARDS AFFECTING LAND ---------------------- NONE. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...500 PM AST. $$ FORECASTER BLAKE