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BULLETIN
TROPICAL STORM ANDREW ADVISORY NUMBER  18
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST FRI AUG 21 1992

         ....ANDREW BEGINS TO STRENGTHEN...

SATELLITE IMAGES AND REPORTS FROM AN AIR FORCE RESERVE UNIT PLANE
INDICATE THAT ANDREW IS BECOMING BETTER ORGANIZED AND THE CENTRAL
PRESSURE IS FALLING.  

AT 5 AM AST...0900Z...THE CENTER OF TROPICAL STORM ANDREW WAS
LOCATED NEAR LATITUDE 24.3 NORTH...LONGITUDE  63.7 WEST OR ABOUT 430
MILES...695 KM...NORTH NORTHEAST OF SAN JUAN PUERTO RICO.
 
ANDREW IS MOVING TOWARD THE NORTHWEST NEAR 12 MPH...19 KM/HR...AND
THIS MOTION IS EXPECTED TO CONTINUE TODAY.
 
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR  60 MPH... 95
KM/HR...OVER A SMALL AREA NORTH OF THE CENTER. SOME FURTHER INCREASE
IN STRENGTH IS LIKELY.  TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 115 MILES...185 KM...NORTH OF THE CENTER AND UP TO 60 MILES...95
KM...SOUTH OF THE CENTER.
 
MINIMUM CENTRAL PRESSURE REPORTED BY THE AIR FORCE RESERVE UNIT
PLANE IS 1006 MB...29.71 INCHES.
 
REPEATING THE 5 AM AST POSITION...24.3 N... 63.7 W. MOVEMENT TOWARD
...NORTHWEST NEAR 12 MPH.  MAXIMUM SUSTAINED WINDS... 60 MPH.
MINIMUM CENTRAL PRESSURE...1006 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER
AT 11 AM AST.
 
AVILA