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#458516 (Received by flhurricane at: 10:55 PM 10.Sep.2011) TCPAT4 BULLETIN TROPICAL STORM MARIA ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142011 1100 PM AST SAT SEP 10 2011 ...HURRICANE HUNTER AIRCRAFT FINDS MARIA IS BETTER ORGANIZED... ...STRONG WINDS TO REMAIN NORTH OF THE LEEWARD AND VIRGIN ISLANDS... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...18.5N 62.9W ABOUT 30 MI...50 KM NNE OF ST. MARTIN ABOUT 210 MI...340 KM E OF SAN JUAN PUERTO RICO MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 PM AST...0300 UTC...THE CENTER OF TROPICAL STORM MARIA WAS LOCATED NEAR LATITUDE 18.5 NORTH...LONGITUDE 62.9 WEST. MARIA IS MOVING TOWARD THE NORTHWEST NEAR 10 MPH...17 KM/H...AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT COUPLE OF DAYS. ON THE FORECAST TRACK...THE CENTER OF MARIA IS EXPECTED TO MOVE AWAY FROM THE LEEWARD ISLANDS TONIGHT AND PASS NORTH OF THE VIRGIN ISLANDS AND PUERTO RICO SUNDAY AND SUNDAY NIGHT. REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER INDICATE THAT MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 50 MPH...85 KM/H... WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS EXPECTED TONIGHT AND SUNDAY. SLOW STRENGTHENING IS POSSIBLE SUNDAY NIGHT AND MONDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 200 MILES...325 KM MAINLY TO THE NORTHEAST OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB...29.68 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 AM AST. $$ FORECASTER BEVEN |