ZCZC MIATCMAT4 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM IVAN FORECAST/ADVISORY NUMBER  12
NATIONAL WEATHER SERVICE MIAMI FL   AL0998
0900Z WED SEP 23 1998
 
TROPICAL STORM CENTER LOCATED NEAR 27.3N  38.1W AT 23/0900Z
POSITION ACCURATE WITHIN  45 NM
 
PRESENT MOVEMENT TOWARD THE NORTH NORTHWEST OR 340 DEGREES AT 13 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  997 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT
34 KT.......175NE 100SE  50SW 100NW
12 FT SEAS..200NE 120SE  70SW 200NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 27.3N  38.1W AT 23/0900Z
AT 23/0600Z CENTER WAS LOCATED NEAR 26.7N  38.0W
 
FORECAST VALID 23/1800Z 29.2N  38.9W
MAX WIND  45 KT...GUSTS  55 KT
34 KT...175NE 100SE  50SW 100NW
 
FORECAST VALID 24/0600Z 31.4N  39.7W
MAX WIND  45 KT...GUSTS  55 KT
34 KT...175NE 100SE  50SW 100NW
 
FORECAST VALID 24/1800Z 33.5N  40.1W
MAX WIND  45 KT...GUSTS  55 KT
34 KT...175NE 100SE  50SW 100NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 27.3N  38.1W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 25/0600Z 35.4N  39.9W
MAX WIND  45 KT...GUSTS  55 KT
 
OUTLOOK VALID 26/0600Z 38.9N  38.4W
MAX WIND  45 KT...GUSTS  55 KT
 
NEXT ADVISORY AT 23/1500Z
 
JARVINEN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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