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BULLETIN
HURRICANE GERT ADVISORY NUMBER  40
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST TUE SEP 21 1999

...GERT TURNING NORTH...
 
A HURRICANE WARNING REMAINS IN EFFECT FOR BERMUDA.
 
AT 5 AM AST...0900Z...THE CENTER OF HURRICANE GERT WAS LOCATED NEAR
LATITUDE 30.5 NORTH...LONGITUDE  62.8 WEST OR ABOUT 170 MILES...275
KM...SOUTHEAST OF BERMUDA.
 
GERT IS MOVING TOWARD THE NORTH NEAR 10 MPH ...17 KM/HR...AND THIS
MOTION IS EXPECTED TO CONTINUE TODAY WITH A GRADUAL TURN TOWARD THE
NORTHEAST.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 110 MPH...175 KM/HR...WITH HIGHER
GUSTS.  SOME WEAKENING IS FORECAST DURING THE NEXT 24 HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 260 MILES...415 KM.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS  954 MB...28.17 INCHES.
 
A STORM SURGE OF 3 TO 5 FEET IS POSSIBLE ACCOMPANIED BY LARGE
BATTERING WAVES OVER PORTIONS OF BERMUDA.
 
REPEATING THE 5 AM AST POSITION...30.5 N... 62.8 W.  MOVEMENT
TOWARD...NORTH NEAR 10 MPH.  MAXIMUM SUSTAINED WINDS...110 MPH. 
MINIMUM CENTRAL PRESSURE... 954 MB.
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 8 AM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 11 AM
AST.
 
JARVINEN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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