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HURRICANE GERT FORECAST/ADVISORY NUMBER  17
NATIONAL WEATHER SERVICE MIAMI FL   AL0999
1500Z WED SEP 15 1999
  
HURRICANE CENTER LOCATED NEAR 17.6N  49.5W AT 15/1500Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 11 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  948 MB
EYE DIAMETER  25 NM
MAX SUSTAINED WINDS 115 KT WITH GUSTS TO 140 KT
64 KT....... 30NE  30SE  30SW  30NW
50 KT....... 60NE  60SE  60SW  60NW
34 KT.......120NE 100SE 100SW 120NW
12 FT SEAS..200NE 200SE 200SW 200NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 17.6N  49.5W AT 15/1500Z
AT 15/1200Z CENTER WAS LOCATED NEAR 17.5N  49.0W
 
FORECAST VALID 16/0000Z 17.7N  51.1W
MAX WIND 115 KT...GUSTS 140 KT
64 KT... 30NE  30SE  30SW  30NW
50 KT... 75NE  75SE  75SW  75NW
34 KT...150NE 125SE 125SW 150NW
 
FORECAST VALID 16/1200Z 18.5N  53.5W
MAX WIND 115 KT...GUSTS 140 KT
64 KT... 30NE  30SE  30SW  30NW
50 KT... 75NE  75SE  75SW  75NW
34 KT...150NE 125SE 125SW 150NW
 
FORECAST VALID 17/0000Z 19.5N  55.5W
MAX WIND 115 KT...GUSTS 140 KT
64 KT... 30NE  30SE  30SW  30NW
50 KT... 75NE  75SE  75SW  75NW
34 KT...150NE 125SE 125SW 150NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.6N  49.5W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 17/1200Z 20.5N  57.5W
MAX WIND 115 KT...GUSTS 140 KT
50 KT... 75NE  75SE  75SW  75NW
 
OUTLOOK VALID 18/1200Z 23.5N  60.5W
MAX WIND 115 KT...GUSTS 140 KT
50 KT... 75NE  75SE  75SW  75NW
 
NEXT ADVISORY AT 15/2100Z
 
AVILA
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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