Hurricane BILL

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BULLETIN
HURRICANE BILL INTERMEDIATE ADVISORY NUMBER  23A...CORRECTED
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL032009
200 AM AST FRI AUG 21 2009

CORRECT DAYS IN MOTION AND INTENSITY PARAGRAPHS...
 
...BILL WEAKENS SLIGHTLY...STILL HEADING QUICKLY NORTHWEST...
 
A TROPICAL STORM WARNING AND A HURRICANE WATCH ARE IN EFFECT FOR
BERMUDA.  A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM
CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 24
HOURS.  A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS.
 
INTERESTS ALONG THE COAST OF NEW ENGLAND AND IN THE CANADIAN
MARITIMES SHOULD MONITOR THE PROGRESS OF BILL.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE OF THE UNITED
STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.  FOR STORM INFORMATION SPECIFIC TO YOUR
AREA IN THE UNITED STATES...INCLUDING POSSIBLE INLAND WATCHES AND
WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICE.
 
AT 200 AM AST...0600 UTC...THE CENTER OF HURRICANE BILL WAS LOCATED
NEAR LATITUDE 25.5 NORTH...LONGITUDE 64.9 WEST OR ABOUT 465 MILES...
750 KM...SOUTH OF BERMUDA AND ABOUT 925 MILES...1490 KM...SOUTHEAST
OF CAPE HATTERAS NORTH CAROLINA.
 
BILL IS MOVING TOWARD THE NORTHWEST NEAR 18 MPH...30 KM/HR.  A
GRADUAL TURN TO THE NORTH-NORTHWEST IS EXPECTED LATER TODAY...
FOLLOWED BY A TURN TOWARD THE NORTH ON SATURDAY.  ON THE FORECAST
TRACK...THE CORE OF THE HURRICANE IS EXPECTED TO PASS BETWEEN
BERMUDA AND THE EAST COAST OF THE UNITED STATES ON SATURDAY.
 
MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 120 MPH...
195 KM/HR...WITH HIGHER GUSTS.  BILL IS A CATEGORY THREE HURRICANE
ON THE SAFFIR-SIMPSON SCALE.  SOME FLUCTUATIONS IN INTENSITY ARE
LIKELY DURING THE NEXT 12 TO 24 HOURS...AND BILL COULD REGAIN
CATEGORY FOUR STRENGTH LATER TODAY.  GRADUAL WEAKENING IS EXPECTED
TO BEGIN ON SATURDAY.
 
BILL IS A LARGE TROPICAL CYCLONE.  HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 115 MILES...185 KM...FROM THE CENTER...AND TROPICAL
STORM FORCE WINDS EXTEND OUTWARD UP TO 260 MILES...415 KM.
 
THE LATEST MINIMUM CENTRAL PRESSURE JUST REPORTED BY AN AIR FORCE
RESERVE HURRICANE HUNTER AIRCRAFT IS 951 MB...28.08 INCHES.
 
BILL IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 2 TO 4
INCHES OVER BERMUDA...WITH POSSIBLY SOME AMOUNTS OF 6 INCHES.
 
SIGNIFICANT COASTAL FLOODING IS EXPECTED ALONG PORTIONS OF THE
BERMUDA COASTLINE OVER THE NEXT DAY OR TWO DUE TO LARGE AND
DANGEROUS BREAKING WAVES GENERATED BY BILL.
 
LARGE SWELLS GENERATED BY THIS HURRICANE ARE AFFECTING PUERTO
RICO...HISPANIOLA...THE BAHAMAS...AND BERMUDA...AND SHOULD BEGIN
AFFECTING MOST OF THE U.S. EAST COAST AND THE ATLANTIC MARITIMES OF
CANADA DURING THE NEXT DAY OR TWO.  THESE SWELLS WILL LIKELY CAUSE
EXTREMELY DANGEROUS SURF AND LIFE-THREATENING RIP CURRENTS. PLEASE
CONSULT STATEMENTS ISSUED BY YOUR LOCAL WEATHER OFFICE FOR MORE
DETAILS. 
 
...SUMMARY OF 200 AM AST INFORMATION...
LOCATION...25.5N 64.9W
MAXIMUM SUSTAINED WINDS...120 MPH
PRESENT MOVEMENT...NORTHWEST OR 310 DEGREES AT 18 MPH
MINIMUM CENTRAL PRESSURE...951 MB
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 500 AM AST.
 
$$
FORECASTER BEVEN/ROBERTS
 
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