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HURRICANE FLOYD FORECAST/ADVISORY NUMBER  21
NATIONAL WEATHER SERVICE MIAMI FL   AL0899
2100Z SUN SEP 12 1999
 
AT 5 PM AST...2100Z...THE GOVERNMENT OF THE BAHAMAS HAS ISSUED A
HURRICANE WARNING FOR THE CENTRAL BAHAMAS...INCLUDING CAT
ISLAND...EXUMAS ISLANDS...LONG ISLAND...RUM CAY...AND SAN SALVADOR
ISLAND.
 
AT 5 PM AST...2100Z...THE GOVERNMENT OF THE BAHAMAS HAS ISSUED A
HURRICANE WATCH 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 REQUIRED FOR A PORTION OF THE FLORIDA EAST
COAST LATER TONIGHT OR EARLY ON MONDAY.
 
INTERESTS IN THE SOUTHEAST U.S. SHOULD MONITOR THE PROGRESS OF THIS
HURRICANE.
 
HURRICANE CENTER LOCATED NEAR 23.4N  68.2W AT 12/2100Z
POSITION ACCURATE WITHIN  10 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 12 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  940 MB
EYE DIAMETER  40 NM
MAX SUSTAINED WINDS 110 KT WITH GUSTS TO 135 KT
64 KT.......100NE  45SE  45SW  75NW
50 KT.......125NE 100SE  90SW 100NW
34 KT.......250NE 180SE 150SW 200NW
12 FT SEAS..300NE 180SE 150SW 300NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 23.4N  68.2W AT 12/2100Z
AT 12/1800Z CENTER WAS LOCATED NEAR 23.3N  67.5W
 
FORECAST VALID 13/0600Z 23.8N  70.1W
MAX WIND 120 KT...GUSTS 145 KT
64 KT...100NE  45SE  45SW  75NW
50 KT...125NE 100SE  90SW 100NW
34 KT...250NE 180SE 150SW 200NW
 
FORECAST VALID 13/1800Z 24.4N  72.7W
MAX WIND 120 KT...GUSTS 145 KT
64 KT...100NE  45SE  45SW  75NW
50 KT...125NE 100SE  90SW 100NW
34 KT...250NE 180SE 150SW 200NW
 
FORECAST VALID 14/0600Z 25.2N  75.2W
MAX WIND 120 KT...GUSTS 145 KT
64 KT...100NE  45SE  45SW  75NW
50 KT...125NE 100SE  90SW 100NW
34 KT...250NE 180SE 150SW 200NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.4N  68.2W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 14/1800Z 26.5N  77.5W
MAX WIND 120 KT...GUSTS 145 KT
50 KT...125NE 100SE 100SW 100NW
 
OUTLOOK VALID 15/1800Z 29.0N  81.0W...INLAND
MAX WIND 120 KT...GUSTS 145 KT
50 KT...125NE 100SE 100SW 100NW
 
NEXT ADVISORY AT 13/0300Z
 
FRANKLIN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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