000 WTNT34 KNHC 100540 TCPAT4 BULLETIN TROPICAL STORM SEAN INTERMEDIATE ADVISORY NUMBER 8A NWS NATIONAL HURRICANE CENTER MIAMI FL AL192011 100 AM EST THU NOV 10 2011 ...SEAN MOVING NORTHWARD...COULD STILL BECOME A HURRICANE LATER TODAY... SUMMARY OF 100 AM EST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...29.9N 70.8W ABOUT 390 MI...630 KM WSW OF BERMUDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...N OR 355 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...991 MB...29.26 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * BERMUDA A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN 24 TO 36 HOURS. INTERESTS IN BERMUDA SHOULD MONITOR PRODUCTS ISSUED BY THE BERMUDA WEATHER SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 100 AM EST...0600 UTC...THE CENTER OF TROPICAL STORM SEAN WAS LOCATED NEAR LATITUDE 29.9 NORTH...LONGITUDE 70.8 WEST. SEAN IS MOVING TOWARD THE NORTH NEAR 8 MPH...13 KM/H. A TURN TOWARD THE NORTHEAST AND AN INCREASE IN FORWARD SPEED ARE EXPECTED LATER TODAY...WITH A FURTHER INCREASE IN FORWARD SPEED EXPECTED TONIGHT AND FRIDAY. ON THE FORECAST TRACK THE CENTER OF SEAN WILL PASS NORTHWEST OF BERMUDA FRIDAY MORNING. MAXIMUM SUSTAINED WINDS ARE NEAR 65 MPH...100 KM/H...WITH HIGHER GUSTS. SOME STRENGTHENING IS EXPECTED IN THE NEXT 24 HOURS...AND SEAN COULD BECOME A HURRICANE LATER TODAY. WEAKENING IS EXPECTED ON FRIDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 255 MILES...410 KM FROM THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 991 MB...29.26 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE EXPECTED ON BERMUDA BY THURSDAY EVENING. RAINFALL...SEAN IS EXPECTED TO PRODUCE 1 TO 3 INCHES OF RAIN ON BERMUDA. SURF...SWELLS GENERATED BY SEAN ARE AFFECTING PORTIONS OF THE SOUTHEASTERN COAST OF THE UNITED STATES AND BERMUDA...CAUSING LIFE-THREATENING SURF AND RIP CURRENTS. PLEASE SEE STATEMENTS FROM YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE FOR MORE DETAILS. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...400 AM EST. $$ FORECASTER BEVEN