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HURRICANE DENNIS INTERMEDIATE ADVISORY NUMBER  18A
NATIONAL WEATHER SERVICE MIAMI FL
8 AM EDT SAT AUG 28 1999
 
...DENNIS...A LITTLE STRONGER...PASSING NORTHEAST AND VERY NEAR
ABACO ISLAND IN THE BAHAMAS...

HURRICANE WARNINGS IN THE BAHAMAS REMAIN IN EFFECT FOR THE ABACOS
AND GRAND BAHAMA ISLANDS AND ARE DISCONTINUED FOR ELEUTHERA AND THE
BERRY ISLANDS.
 
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE EAST COAST OF
FLORIDA FROM SEBASTIAN INLET TO FLAGLER BEACH. A HURRICANE WATCH
REMAINS IN EFFECT FROM SEBASTIAN INLET NORTHWARD TO FERNANDINA
BEACH.
 
IT MAY BE NECESSARY TO SHIFT THE WATCHES AND WARNINGS NORTHWARD.
COASTAL INTERESTS IN GEORGIA AND SOUTH AND NORTH CAROLINA SHOULD
CLOSELY MONITOR THE PROGRESS OF DENNIS.
 
AT 8 AM EDT...1200Z...THE CENTER OF HURRICANE DENNIS WAS LOCATED
NEAR LATITUDE 27.0 NORTH...LONGITUDE  77.0 WEST.  THE POSITION IS
ABOUT 25 MILES NORTHEAST OF ABACO ISLAND AND ABOUT 240 MILES...
385 KM... EAST-SOUTHEAST OF CAPE CANAVERAL FLORIDA.
 
DENNIS IS MOVING TOWARD THE NORTHWEST NEAR 6 MPH... 9 KM/HR...AND
THIS MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS. 
 
LATEST INFORMATION FROM A SONDE DROPPED IN THE EYEWALL BY AN AIR
FORCE RECONNAISSANCE PLANE INDICATES THAT MAXIMUM SUSTAINED WINDS
HAVE INCREASED TO NEAR  90 MPH...145 KM/HR...WITH HIGHER GUSTS.  
OBSERVATIONS RELAYED BY HAM RADIO OPERATORS FROM GREEN TURTLE CAY IN
THE BAHAMAS...LOCATED VERY NEAR THE CENTER OF DENNIS... EXPERIENCED
GUSTS TO 115 MPH...185 KPH...AND STORM SURGE FLOODING EARLIER THIS
MORNING.  WINDS HAVE BEEN GUSTING TO 92 MPH...148 KPH...DURING THE
PAST HOUR OR SO. SOME STRENGTHENING IS FORECAST DURING THE NEXT 24
HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO  40 MILES... 65 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 160 MILES...260 KM.
 
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY US AIR FORCE RESERVE
RECONNAISSANCE IS 973 MB...28.73 INCHES.
 
RAINFALL AMOUNTS OF 5 TO 10 INCHES ARE LIKELY ALONG THE PATH OF
THE HURRICANE.
 
STORM SURGE FLOODING OF 4 TO 8 FEET ABOVE NORMAL TIDE LEVELS...
ACCOMPANIED BY LARGE AND DANGEROUS BATTERING WAVES ARE LIKELY IN
THE NORTHERN BAHAMA ISLANDS NEAR THE PATH OF THE HURRICANE
  
REPEATING THE 8 AM EDT POSITION...27.0 N... 77.0 W.  MOVEMENT
TOWARD...NORTHWEST NEAR  6 MPH.  MAXIMUM SUSTAINED WINDS...90 MPH. 
MINIMUM CENTRAL PRESSURE... 973 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
11 AM EDT.
 
AVILA 
 
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