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#455848 (Received by flhurricane at: 5:01 AM 03.Sep.2011) TCPAT2 BULLETIN HURRICANE KATIA ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122011 500 AM AST SAT SEP 03 2011 ...KATIA STILL A HURRICANE... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...19.3N 55.1W ABOUT 530 MI...850 KM E OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 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 HURRICANE KATIA WAS LOCATED NEAR LATITUDE 19.3 NORTH...LONGITUDE 55.1 WEST. KATIA IS MOVING TOWARD THE NORTHWEST NEAR 10 MPH...17 KM/H. A GENERAL MOTION BETWEEN THE NORTHWEST AND WEST-NORTHWEST WITH NO SIGNIFICANT CHANGE IN FORWARD SPEED IS EXPECTED DURING THE NEXT FEW DAYS. ON THE FORECAST TRACK...KATIA WILL PASS WELL TO THE NORTH OF THE LEEWARD ISLANDS ON SUNDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/H...WITH HIGHER GUSTS. KATIA IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. SOME SLOW STRENGTHENING IS POSSIBLE THIS WEEKEND. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 35 MILES...55 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM...MAINLY TO THE NORTH AND EAST OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 988 MB...29.18 INCHES. HAZARDS AFFECTING LAND ---------------------- SURF...SWELLS GENERATED BY KATIA ARE AFFECTING THE LESSER ANTILLES. 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 |