000 WTNT34 KNHC 111451 TCPAT4 BULLETIN TROPICAL STORM MARIA ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142011 1100 AM AST SUN SEP 11 2011 ...CENTER OF MARINA PASSING JUST NORTH OF THE VIRGIN ISLANDS...STRONG WINDS REMAIN WELL NORTH OVER THE ATLANTIC WATERS... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...19.0N 64.6W ABOUT 50 MI...80 KM NNE OF ST. THOMAS ABOUT 105 MI...170 KM ENE OF SAN JUAN PUERTO RICO MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. INTERESTS IN THE VIRGIN ISLANDS...PUERTO RICO...THE TURKS AND CAICOS ISLANDS...AND THE SOUTHEASTERN BAHAMAS SHOULD MONITOR THE PROGRESS OF MARIA. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 AM AST...1500 UTC...THE CENTER OF TROPICAL STORM MARIA WAS LOCATED BY AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT NEAR LATITUDE 19.0 NORTH...LONGITUDE 64.6 WEST. MARIA IS MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH...17 KM/H. A TURN TOWARD THE NORTHWEST IS EXPECTED LATER TODAY...AND THIS MOTION SHOULD CONTINUE DURING THE NEXT COUPLE OF DAYS. ON THIS TRACK...THE CENTER OF MARIA WILL GRADUALLY MOVE AWAY FROM THE EXTREME NORTHEASTERN CARIBBEAN ISLANDS. MAXIMUM SUSTAINED WINDS ARE NEAR 60 MPH...95 KM/H...WITH HIGHER GUSTS. THESE WINDS ARE OCCURRING OVER WATER TO THE NORTH AND EAST OF THE CENTER. NO SIGNIFICANT CHANGE IN STRENGTH IS ANTICIPATED DURING THE NEXT TWO DAYS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 200 MILES...325 KM...TO THE NORTH AND EAST OF THE CENTER. THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY THE AIR FORCE RECONNAISSANCE PLANE WAS 1007 MB...29.74 INCHES. HAZARDS AFFECTING LAND ---------------------- RAINFALL...MARIA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 2 TO 4 INCHES WITH ISOLATED MAXIMUM AMOUNTS OF 6 INCHES OVER THE LESSER ANTILLES...THE VIRGIN ISLANDS...AND PUERTO RICO. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...500 PM AST. $$ FORECASTER BROWN