HOME	ACTIVE CYCLONES	FORECASTS	IMAGERY	ABOUT TPC	RECONNAISSANCE

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HURRICANE DENNIS FORECAST/ADVISORY NUMBER  18
NATIONAL WEATHER SERVICE MIAMI FL   AL0599
0900Z SAT AUG 28 1999
CORRECTION...INITIAL WIND SPEED IS 70 KNOTS...NOT 75 KNOTS

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.
 
HURRICANE CENTER LOCATED NEAR 26.7N  76.9W AT 28/0900Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT  5 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  975 MB
EYE DIAMETER  35 NM
MAX SUSTAINED WINDS  70 KT WITH GUSTS TO  85 KT
64 KT....... 35NE   0SE   0SW   0NW
50 KT.......100NE  60SE   0SW  60NW
34 KT.......140NE 125SE  75SW 100NW
12 FT SEAS..175NE 150SE 100SW 150NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 26.7N  76.9W AT 28/0900Z
AT 28/0600Z CENTER WAS LOCATED NEAR 26.5N  76.7W
 
FORECAST VALID 28/1800Z 27.2N  77.6W
MAX WIND  80 KT...GUSTS  95 KT
64 KT... 35NE   0SE   0SW   0NW
50 KT...100NE  60SE   0SW  60NW
34 KT...140NE 125SE  75SW 100NW
 
FORECAST VALID 29/0600Z 27.8N  78.4W
MAX WIND  85 KT...GUSTS 100 KT
64 KT... 30NE  20SE  20SW  30NW
50 KT...100NE  75SE  25SW  75NW
34 KT...140NE 125SE  75SW 125NW
 
FORECAST VALID 29/1800Z 29.0N  79.0W
MAX WIND  90 KT...GUSTS 110 KT
64 KT... 30NE  20SE  20SW  30NW
50 KT...100NE  75SE  50SW  75NW
34 KT...140NE 125SE  75SW 125NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 26.7N  76.9W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 30/0600Z 30.4N  79.0W
MAX WIND  95 KT...GUSTS 115 KT
50 KT...100NE  75SE  50SW  75NW
 
OUTLOOK VALID 31/0600Z 33.0N  78.0W
MAX WIND  95 KT...GUSTS 115 KT
50 KT...100NE  75SE  50SW  75NW
 
NEXT ADVISORY AT 28/1500Z
 
LAWRENCE
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT5 AND WMO HEADER WTNT75 KNHC.
 
 
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