000 WTNT32 KNHC 020847 TCPAT2 BULLETIN TROPICAL STORM KATIA ADVISORY NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122011 500 AM AST FRI SEP 02 2011 ...KATIA NOT EXPECTED TO STRENGTHEN MUCH TODAY... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...17.0N 51.8W ABOUT 750 MI...1205 KM E OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.35 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 500 AM AST...0900 UTC...THE CENTER OF TROPICAL STORM KATIA WAS LOCATED NEAR LATITUDE 17.0 NORTH...LONGITUDE 51.8 WEST. KATIA IS MOVING TOWARD THE WEST-NORTHWEST NEAR 15 MPH...24 KM/H...AND A MOTION TOWARD THE NORTHWEST AT A SLOWER FORWARD SPEED IS EXPECTED FOR THE NEXT COUPLE OF DAYS. MAXIMUM SUSTAINED WINDS ARE NEAR 70 MPH...110 KM/H...WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS EXPECTED TODAY...BUT KATIA COULD BECOME A HURRICANE AGAIN OVER THE WEEKEND. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 994 MB...29.35 INCHES. HAZARDS AFFECTING LAND ---------------------- SURF...SWELLS GENERATED BY KATIA WILL BEGIN AFFECTING THE LESSER ANTILLES BY LATE TODAY. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...1100 AM AST. $$ FORECASTER BLAKE