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BULLETIN
HURRICANE FLOYD ADVISORY NUMBER  20
NATIONAL WEATHER SERVICE MIAMI FL
11 AM AST SUN SEP 12 1999

...FLOYD CONTINUES TO STRENGTHEN... 

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.
 
AT 11 AM AST...1500Z...THE CENTER OF HURRICANE FLOYD WAS LOCATED
NEAR LATITUDE 23.0 NORTH...LONGITUDE  66.6 WEST OR ABOUT 310
MILES...500 KM...EAST-NORTHEAST OF GRAND TURK ISLAND.
 
FLOYD IS MOVING TO THE WEST NEAR 12 MPH...19 KM/HR...AND A GENERAL
WEST OR WEST-NORTHWESTWARD MOTION IS EXPECTED THROUGH TONIGHT.
 
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 120 MPH...195 KM/HR...WITH
HIGHER GUSTS.  SOME ADDITIONAL STRENGTHENING IS POSSIBLE LATER
TODAY.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 115 MILES...185 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 200 MILES...325 KM.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS  955 MB...28.20 INCHES.
 
REPEATING THE 11 AM AST POSITION...23.0 N... 66.6 W.  MOVEMENT
TOWARD...WEST NEAR 12 MPH.  MAXIMUM SUSTAINED WINDS...120 MPH. 
MINIMUM CENTRAL PRESSURE... 955 MB.
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 2 PM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 5 PM
AST.
 
FRANKLIN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
 
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