Hurricane BILL

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BULLETIN
HURRICANE BILL ADVISORY NUMBER  21
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL032009
1100 AM AST THU AUG 20 2009

...LARGE HURRICANE BILL SPREADING HIGH SWELLS OVER THE WESTERN
ATLANTIC...
 
AT 11 AM AST...1500 UTC...THE BERMUDA WEATHER SERVICE HAS ISSUED A
HURRICANE WATCH FOR BERMUDA.  A HURRICANE WATCH MEANS THAT HURRICANE
CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36
HOURS.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE OF THE UNITED
STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.
 
AT 1100 AM AST...1500 UTC...THE EYE OF HURRICANE BILL WAS LOCATED
NEAR LATITUDE 22.6 NORTH...LONGITUDE 61.7 WEST OR ABOUT 380 MILES...
610 KM...NORTH OF THE LEEWARD ISLANDS AND ABOUT 695 MILES...1120 KM
...SOUTH-SOUTHEAST OF BERMUDA.
 
BILL IS MOVING TOWARD THE NORTHWEST NEAR 18 MPH...30 KM/HR...AND
THIS GENERAL MOTION IS EXPECTED TO CONTINUE TROUGH FRIDAY. ON THIS
FORECAST TRACK...THE CORE OF HURRICANE BILL IS EXPECTED TO PASS
OVER OPEN WATERS BETWEEN BERMUDA AND THE EAST COAST OF THE UNITED
STATES EARLY 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 STRENGTHENING IS FORECAST DURING
THE NEXT 24 HOURS AND BILL COULD REGAIN CATEGORY FOUR STATUS ON
FRIDAY. 
 
BILL IS A LARGE TROPICAL CYCLONE. HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 105 MILES...165 KM...FROM THE CENTER...AND TROPICAL
STORM FORCE WINDS EXTEND OUTWARD UP TO 260 MILES...415 KM.
 
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY A NOAA P-3 HURRICANE
RECONNAISSANCE AIRCRAFT WAS 951 MB...28.08 INCHES.
 
LARGE SWELLS GENERATED BY THIS HURRICANE ARE AFFECTING THE NORTHERN
LEEWARD ISLANDS AND SHOULD BEGIN AFFECTING THE BAHAMAS...BERMUDA...
MOST OF THE EASTERN U.S. COAST...AND THE ATLANTIC MARITIMES OF
CANADA DURING THE NEXT FEW DAYS.  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 1100 AM AST INFORMATION...
LOCATION...22.6N 61.7W
MAXIMUM SUSTAINED WINDS...120 MPH
PRESENT MOVEMENT...NORTHWEST OR 305 DEGREES AT 18 MPH
MINIMUM CENTRAL PRESSURE...951 MB
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 200 PM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 500
PM AST.
 
$$
FORECASTER AVILA
 
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