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TTAA00 KNHC DDHHMM
HURRICANE BRET FORECAST/ADVISORY NUMBER  18
NATIONAL WEATHER SERVICE MIAMI FL   AL0399
0300Z MON AUG 23 1999

A HURRICANE WARNING REMAINS IN EFFECT FROM BROWNSVILLE TEXAS 
TO PORT ARANSAS TEXAS.
 
AT 0300Z...THE HURRICANE WARNING FROM NORTH OF PORT ARANSAS TO 
PORT OCONNOR IS DOWNGRADED TO A TROPICAL STORM WARNING.  THE
TROPICAL STORM WARNING FROM NORTH OF PORT OCONNOR TO FREEPORT 
TEXAS IS DISCONTINUED.
 
HURRICANE CENTER LOCATED NEAR 26.9N  97.6W AT 23/0300Z
POSITION ACCURATE WITHIN   5 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT  6 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  955 MB
EYE DIAMETER  10 NM
MAX SUSTAINED WINDS 100 KT WITH GUSTS TO 120 KT
64 KT....... 25NE  20SE  15SW  15NW
50 KT....... 70NE  40SE  25SW  30NW
34 KT.......105NE  85SE  45SW  60NW
12 FT SEAS..150NE 125SE    0SW  0NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 26.9N  97.6W AT 23/0300Z
AT 23/0000Z CENTER WAS LOCATED NEAR 26.9N  97.4W
 
FORECAST VALID 23/1200Z 27.0N  98.4W...INLAND
MAX WIND  60 KT...GUSTS  75 KT
50 KT... 50NE  50SE  25SW  25NW
34 KT... 75NE  75SE  50SW  50NW
 
FORECAST VALID 24/0000Z 27.1N  99.2W...INLAND
MAX WIND  30 KT...GUSTS  40 KT
 
FORECAST VALID 24/1200Z 27.2N 100.0W...INLAND
MAX WIND  25 KT...GUSTS  35 KT
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 26.9N  97.6W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 25/0000Z 27.2N 100.5W...INLAND
MAX WIND  25 KT...GUSTS  35 KT
 
OUTLOOK VALID 26/0000Z 27.2N 101.5W...INLAND
MAX WIND  25 KT...GUSTS  35 KT
 
NEXT ADVISORY AT 23/0900Z
 
GUINEY
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT3 AND WMO HEADER WTNT73 KNHC.
 
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