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HURRICANE FLOYD ADVISORY NUMBER  22
NATIONAL WEATHER SERVICE MIAMI FL
11 PM AST SUN SEP 12 1999

...EXTREMELY DANGEROUS HURRICANE FLOYD HEADING TOWARD THE BAHAMAS...
 
A HURRICANE WARNING IS IN EFFECT FOR THE CENTRAL BAHAMAS...INCLUDING
CAT ISLAND...EXUMAS ISLANDS...LONG ISLAND...RUM CAY...AND SAN
SALVADOR ISLAND.
 
A HURRICANE WATCH IS IN EFFECT FOR THE NORTHWEST BAHAMAS...INCLUDING
THE ABACO ISLANDS...ANDROS ISLAND...BERRY ISLANDS...BIMINI...
ELEUTHERA...GRAND BAHAMA AND NEW PROVIDENCE ISLAND.
 
A TROPICAL STORM WARNING IS IN EFFECT FOR THE TURKS AND CAICOS
ISLANDS AND THE SOUTHEASTERN BAHAMAS.
 
A HURRICANE WATCH MAY BE ISSUED FOR A PORTION OF THE FLORIDA EAST
COAST AT 5 AM ON MONDAY.
 
INTERESTS IN THE SOUTHEAST U.S. SHOULD MONITOR THE PROGRESS OF THIS
HURRICANE.
 
AT 11 PM AST...0300Z...THE CENTER OF HURRICANE FLOYD WAS LOCATED
NEAR LATITUDE 23.6 NORTH...LONGITUDE  69.3 WEST OR ABOUT 330
MILES...530 KM...EAST OF SAN SALVADOR IN THE CENTRAL BAHAMAS.
 
FLOYD IS MOVING TOWARD THE WEST NEAR 14 MPH...22 KM/HR...AND THIS
MOTION IS EXPECTED TO CONTINUE THROUGH TONIGHT.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 145 MPH...230 KM/HR...WITH HIGHER
GUSTS.  FLOYD IS A CATEGORY FOUR HURRICANE ON THE SAFFIR/SIMPSON
HURRICANE SCALE.  SOME FLUCTUATIONS IN STRENGTH ARE LIKELY IN THE
NEXT 24 HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 105 MILES...165 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 290 MILES...465 KM.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS  931 MB...27.49 INCHES.

STORM SURGE FLOODING OF 10 TO 15 FEET ABOVE NORMAL TIDE
LEVELS...WITH LARGE BATTERING WAVES...IS POSSIBLE IN THE HURRICANE
WARNING AREA.
 
REPEATING THE 11 PM AST POSITION...23.6 N... 69.3 W.  MOVEMENT
TOWARD...WEST NEAR 14 MPH.  MAXIMUM SUSTAINED WINDS...145 MPH. 
MINIMUM CENTRAL PRESSURE... 931 MB.
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 2 AM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 5 AM
AST...MONDAY.
 
JARVINEN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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