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TROPICAL STORM FLOYD FORECAST/ADVISORY NUMBER  11
NATIONAL WEATHER SERVICE MIAMI FL   AL0899
0900Z 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.
 
ALL INTERESTS IN THE NORTHEASTERN CARIBBEAN SHOULD MONITOR THE
PROGRESS OF FLOYD.
 
TROPICAL STORM CENTER LOCATED NEAR 18.9N  58.7W AT 10/0900Z
POSITION ACCURATE WITHIN  30 NM
 
PRESENT MOVEMENT TOWARD THE WEST NORTHWEST OR 300 DEGREES AT 10 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  985 MB
MAX SUSTAINED WINDS  60 KT WITH GUSTS TO  75 KT
50 KT....... 90NE  60SE   0SW  60NW
34 KT.......150NE 125SE  75SW 125NW
12 FT SEAS..200NE 150SE 100SW 200NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 18.9N  58.7W AT 10/0900Z
AT 10/0600Z CENTER WAS LOCATED NEAR 18.7N  58.2W
 
FORECAST VALID 10/1800Z 19.7N  60.2W
MAX WIND  70 KT...GUSTS  85 KT
64 KT... 50NE  30SE   0SW  30NW
50 KT... 90NE  60SE   0SW  60NW
34 KT...150NE 125SE 100SW 125NW
 
FORECAST VALID 11/0600Z 20.6N  61.8W
MAX WIND  75 KT...GUSTS  90 KT
64 KT... 50NE  30SE  30SW  30NW
50 KT... 90NE  60SE  50SW  60NW
34 KT...150NE 125SE 100SW 125NW
 
FORECAST VALID 11/1800Z 21.7N  63.6W
MAX WIND  80 KT...GUSTS  95 KT
64 KT... 50NE  30SE  30SW  30NW
50 KT... 90NE  60SE  50SW  60NW
34 KT...150NE 125SE 100SW 125NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.9N  58.7W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 12/0600Z 22.5N  65.5W
MAX WIND  85 KT...GUSTS 105 KT
50 KT...100NE  90SE  75SW  90NW
 
OUTLOOK VALID 13/0600Z 23.5N  69.0W
MAX WIND 100 KT...GUSTS 120 KT
50 KT...100NE  90SE  75SW  90NW
 
NEXT ADVISORY AT 10/1500Z
 
PASCH
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
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