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HURRICANE GERT ADVISORY NUMBER  12
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST TUE SEP 14 1999

...STRENGTHENING GERT MOVING WEST-NORTHWEST...
 
AT 5 AM AST...0900Z...THE CENTER OF HURRICANE GERT WAS LOCATED NEAR
LATITUDE 16.7 NORTH...LONGITUDE  43.9 WEST OR ABOUT 1155 MILES...
1855 KM...EAST OF THE LEEWARD ISLANDS.
 
GERT IS MOVING TOWARD THE WEST NORTHWEST NEAR 15 MPH...24 KM/HR...
AND THIS MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS.
 
SATELLITE IMAGERY INDICATES THAT GERT HAS FORMED AN EYE AND MAXIMUM
SUSTAINED WINDS HAVE INCREASED TO NEAR 105 MPH...165 KM/HR...WITH
HIGHER GUSTS.  SOME ADDITIONAL STRENGTHENING IS FORECAST DURING THE
NEXT 24 HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO  35 MILES... 55 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 140 MILES...220 KM.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS  970 MB...28.64 INCHES.
 
REPEATING THE 5 AM AST POSITION...16.7 N... 43.9 W.  MOVEMENT
TOWARD...WEST NORTHWEST NEAR 15 MPH.  MAXIMUM SUSTAINED
WINDS...105 MPH.  MINIMUM CENTRAL PRESSURE... 970 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
11 AM AST.
 
BEVEN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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