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TROPICAL STORM FLOYD ADVISORY NUMBER  10
NATIONAL WEATHER SERVICE MIAMI FL
11 PM AST THU SEP 09 1999

...FLOYD STILL A TROPICAL STORM...BUT FORECAST TO BECOME A
HURRICANE...
 
...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.
 
AT 11 PM AST...0300Z...THE CENTER OF TROPICAL STORM FLOYD WAS
LOCATED NEAR LATITUDE 18.3 NORTH...LONGITUDE 57.7 WEST OR ABOUT 265
MILES...425 KM...EAST OF BARBUDA IN THE LEEWARD ISLANDS.
 
FLOYD HAS MOVED SLOWLY WESTWARD DURING THE PAST FEW HOURS BUT IS
FORECAST TO RESUME A  WEST NORTHWEST MOTION NEAR 10 MPH...17 KM/HR
...SOON.  ON THIS TRACK...THE CENTER OF FLOYD IS EXPECTED TO PASS
NORTH OF THE LEEWARD ISLANDS ON FRIDAY...BUT ANY DEVIATION TO THE
LEFT WOULD BRING TROPICAL STORM CONDITIONS TO THE NORTHERNMOST
ISLANDS OF THE NORTHEASTERN CARIBBEAN. 

REPORTS FROM AN AIR FORCE PLANE INDICATE THAT THE MAXIMUM SUSTAINED
WINDS REMAIN NEAR 70 MPH...110 KM/HR...WITH HIGHER GUSTS.   SOME
STRENGTHENING IS POSSIBLE DURING THE NEXT 24 HOURS.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES ...280 KM
FROM THE CENTER.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS 995 MB...29.38 INCHES.
 
REPEATING THE 11 PM AST POSITION...18.3 N... 57.7 W.  MOVEMENT
TOWARD...WEST NORTHWEST NEAR 10 MPH.  MAXIMUM SUSTAINED WINDS...
70 MPH.  MINIMUM CENTRAL PRESSURE... 995 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...FRIDAY.
 
AVILA
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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