ZCZC MIATCMAT4 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM IVAN FORECAST/ADVISORY NUMBER   3
NATIONAL WEATHER SERVICE MIAMI FL   AL0998
0300Z MON SEP 21 1998
 
TROPICAL STORM CENTER LOCATED NEAR 16.9N  34.2W AT 21/0300Z
POSITION ACCURATE WITHIN  60 NM
 
PRESENT MOVEMENT TOWARD THE WEST NORTHWEST OR 295 DEGREES AT 12 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB
MAX SUSTAINED WINDS  35 KT WITH GUSTS TO  45 KT
34 KT....... 40NE  40SE  40SW  40NW
12 FT SEAS..100NE  40SE  40SW 100NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 16.9N  34.2W AT 21/0300Z
AT 21/0000Z CENTER WAS LOCATED NEAR 16.7N  33.6W
 
FORECAST VALID 21/1200Z 17.7N  35.8W
MAX WIND  40 KT...GUSTS  50 KT
34 KT... 45NE  45SE  45SW  45NW
 
FORECAST VALID 22/0000Z 18.8N  38.1W
MAX WIND  45 KT...GUSTS  55 KT
34 KT... 50NE  50SE  50SW  50NW
 
FORECAST VALID 22/1200Z 19.9N  40.2W
MAX WIND  45 KT...GUSTS  55 KT
34 KT... 50NE  50SE  50SW  50NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.9N  34.2W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 23/0000Z 21.0N  42.0W
MAX WIND  45 KT...GUSTS  55 KT
 
OUTLOOK VALID 24/0000Z 23.0N  45.0W
MAX WIND  45 KT...GUSTS  55 KT
 
NEXT ADVISORY AT 21/0900Z
 
MAYFIELD
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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