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HURRICANE FLOYD FORECAST/ADVISORY NUMBER  13
NATIONAL WEATHER SERVICE MIAMI FL   AL0899
2100Z FRI SEP 10 1999
 
...A TROPICAL STORM WATCH IS IN EFFECT FOR THE FOLLOWING CARIBBEAN
ISLANDS...ANTIGUA...BARBUDA...ANGUILLA...AND DUTCH SAINT MAARTEN...
FRENCH SAINT MARTIN AND SAINT BARTHELEMY.
 
INTERESTS IN THE BAHAMAS AND THE SOUTHEAST U.S. SHOULD MONITOR THE
PROGRESS OF THIS HURRICANE OVER THE WEEKEND.
 
HURRICANE CENTER LOCATED NEAR 20.5N  60.0W AT 10/2100Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 10 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  975 MB
EYE DIAMETER  35 NM
MAX SUSTAINED WINDS  70 KT WITH GUSTS TO  85 KT
64 KT....... 60NE  60SE   0SW   0NW
50 KT.......100NE 100SE  30SW  75NW
34 KT.......150NE 150SE  75SW 125NW
12 FT SEAS..200NE 150SE 100SW 200NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 20.5N  60.0W AT 10/2100Z
AT 10/1800Z CENTER WAS LOCATED NEAR 20.2N  59.6W
 
FORECAST VALID 11/0600Z 21.5N  61.2W
MAX WIND  80 KT...GUSTS  95 KT
64 KT... 60NE  60SE   0SW   0NW
50 KT...100NE 100SE  30SW  75NW
34 KT...150NE 150SE  75SW 125NW
 
FORECAST VALID 11/1800Z 22.5N  62.8W
MAX WIND  85 KT...GUSTS 105 KT
64 KT... 60NE  60SE  30SW  30NW
50 KT...100NE 100SE  50SW 100NW
34 KT...150NE 150SE 100SW 125NW
 
FORECAST VALID 12/0600Z 23.4N  64.7W
MAX WIND  90 KT...GUSTS 110 KT
64 KT... 60NE  60SE  30SW  30NW
50 KT...100NE 100SE  50SW 100NW
34 KT...150NE 150SE 100SW 125NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.5N  60.0W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 12/1800Z 24.0N  67.0W
MAX WIND  95 KT...GUSTS 115 KT
50 KT...100NE 100SE  75SW 100NW
 
OUTLOOK VALID 13/1800Z 25.0N  71.5W
MAX WIND 105 KT...GUSTS 130 KT
50 KT...100NE 100SE  75SW 100NW
 
NEXT ADVISORY AT 11/0300Z
 
FRANKLIN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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