ZCZC MIATCMAT4 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM IVAN FORECAST/ADVISORY NUMBER   6
NATIONAL WEATHER SERVICE MIAMI FL   AL0998
2100Z MON SEP 21 1998
 
 
TROPICAL STORM CENTER LOCATED NEAR 19.3N  36.2W AT 21/2100Z
POSITION ACCURATE WITHIN  60 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 320 DEGREES AT 10 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS  40 KT WITH GUSTS TO  50 KT
34 KT....... 75NE  50SE  50SW  50NW
12 FT SEAS.. 75NE  50SE  50SW  50NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 19.3N  36.2W AT 21/2100Z
AT 21/1800Z CENTER WAS LOCATED NEAR 18.9N  35.9W
 
FORECAST VALID 22/0600Z 20.4N  37.3W
MAX WIND  40 KT...GUSTS  50 KT
34 KT... 75NE  50SE  50SW  50NW
 
FORECAST VALID 22/1800Z 21.9N  38.8W
MAX WIND  40 KT...GUSTS  50 KT
34 KT... 75NE  50SE  50SW  50NW
 
FORECAST VALID 23/0600Z 23.6N  40.3W
MAX WIND  45 KT...GUSTS  55 KT
34 KT... 75NE  50SE  50SW  50NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.3N  36.2W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 23/1800Z 25.2N  41.8W
MAX WIND  45 KT...GUSTS  55 KT
 
OUTLOOK VALID 24/1800Z 29.0N  44.5W
MAX WIND  50 KT...GUSTS  60 KT
50 KT... 30NE  30SE  30SW  30NW
 
NEXT ADVISORY AT 22/0300Z
 
RAPPAPORT
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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