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HURRICANE FLOYD FORECAST/ADVISORY NUMBER  20
NATIONAL WEATHER SERVICE MIAMI FL   AL0899
1500Z SUN SEP 12 1999
 
A TROPICAL STORM WARNING IS IN EFFECT FOR THE TURKS AND CAICOS
ISLANDS AND THE SOUTHEASTERN BAHAMAS.  A HURRICANE WATCH IS IN
EFFECT FOR THE CENTRAL BAHAMAS.
 
A HURRICANE WATCH MAY BE REQUIRED FOR THE NORTHWEST BAHAMAS LATER
TODAY. INTERESTS IN THE SOUTHEAST U.S. SHOULD MONITOR THE PROGRESS
OF THIS HURRICANE.
 
HURRICANE CENTER LOCATED NEAR 23.0N  66.6W AT 12/1500Z
POSITION ACCURATE WITHIN  10 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 10 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  955 MB
EYE DIAMETER  35 NM
MAX SUSTAINED WINDS 105 KT WITH GUSTS TO 130 KT
64 KT.......100NE  45SE  45SW  50NW
50 KT.......125NE 100SE  75SW  90NW
34 KT.......175NE 150SE 100SW 125NW
12 FT SEAS..300NE 150SE 100SW 250NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 23.0N  66.6W AT 12/1500Z
AT 12/1200Z CENTER WAS LOCATED NEAR 22.9N  66.2W
 
FORECAST VALID 13/0000Z 23.2N  68.1W
MAX WIND 110 KT...GUSTS 135 KT
64 KT...100NE  45SE  45SW  50NW
50 KT...125NE 100SE  75SW  90NW
34 KT...175NE 150SE 100SW 125NW
 
FORECAST VALID 13/1200Z 23.7N  70.8W
MAX WIND 115 KT...GUSTS 140 KT
64 KT...100NE  45SE  45SW  50NW
50 KT...125NE 100SE  75SW  90NW
34 KT...175NE 150SE 100SW 125NW
 
FORECAST VALID 14/0000Z 24.5N  73.5W
MAX WIND 120 KT...GUSTS 145 KT
64 KT...100NE  60SE  60SW  60NW
50 KT...125NE 100SE 100SW 100NW
34 KT...175NE 150SE 150SW 150NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.0N  66.6W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 14/1200Z 25.5N  76.0W
MAX WIND 120 KT...GUSTS 145 KT
50 KT...125NE 100SE 100SW 100NW
 
OUTLOOK VALID 15/1200Z 28.5N  80.5W
MAX WIND 120 KT...GUSTS 145 KT
50 KT...125NE 100SE 100SW 100NW
 
NEXT ADVISORY AT 12/2100Z
 
FRANKLIN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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