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ZCZC MIATCPAT5 ALL TTAA00 KNHC DDHHMM BULLETIN 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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