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#8046 (Received by flhurricane at: 4:51 PM 12.Sep.2004)
TCMAT4
HURRICANE IVAN FORECAST/ADVISORY NUMBER 42
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL092004
2100Z SUN SEP 12 2004

A HURRICANE WARNING REMAINS IN EFFECT FOR THE CAYMAN ISLANDS.

A HURRICANE WARNING IS IN EFFECT FOR CUBA FROM PINAR DEL RIO TO
CIEGO DE AVILA INCLUDING THE ISLE OF YOUTH. A HURRICANE WARNING
MEANS THAT HURRICANE CONDITIONS ARE EXPECTED WITHIN THE WARNING
AREA WITHIN THE NEXT 24 HOURS. PREPARATIONS TO PROTECT LIFE AND
PROPERTY SHOULD BE RUSHED TO COMPLETION.

A HURRICANE WATCH IS IN EFFECT FOR THE REST OF CUBA. A HURRICANE
WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE
WATCH AREA...GENERALLY WITHIN 36 HOURS.

AT 5 PM EDT...2100Z...THE GOVERNMENT OF MEXICO HAS ISSUED A
HURRICANE WATCH AND A TROPICAL STORM WARNING FOR THE NORTHEASTERN
YUCATAN PENINSULA FROM TULUM TO PROGRESO.

A TROPICAL STORM WATCH REMAINS IN EFFECT FOR THE FLORIDA KEYS FROM
THE SEVEN MILE BRIDGE WESTWARD TO THE DRY TORTUGAS.

INTERESTS IN THE NORTHWESTERN CARIBBEAN SEA...AS WELL AS IN THE
CENTRAL AND EASTERN GULF OF MEXICO...SHOULD CLOSELY MONITOR THE
PROGRESS OF THIS EXTREMELY DANGEROUS HURRICANE.

HURRICANE CENTER LOCATED NEAR 19.3N 82.5W AT 12/2100Z
POSITION ACCURATE WITHIN 15 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 916 MB
EYE DIAMETER 15 NM
MAX SUSTAINED WINDS 130 KT WITH GUSTS TO 160 KT.
64 KT....... 80NE 60SE 45SW 55NW.
50 KT.......100NE 90SE 70SW 90NW.
34 KT.......150NE 120SE 100SW 150NW.
12 FT SEAS..360NE 180SE 180SW 220NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 19.3N 82.5W AT 12/2100Z
AT 12/1800Z CENTER WAS LOCATED NEAR 19.1N 82.1W

FORECAST VALID 13/0600Z 19.9N 83.5W
MAX WIND 140 KT...GUSTS 170 KT.
64 KT... 80NE 60SE 45SW 55NW.
50 KT...100NE 90SE 70SW 90NW.
34 KT...150NE 120SE 100SW 150NW.

FORECAST VALID 13/1800Z 21.3N 84.7W
MAX WIND 145 KT...GUSTS 175 KT.
64 KT... 80NE 60SE 45SW 55NW.
50 KT...100NE 90SE 70SW 90NW.
34 KT...150NE 120SE 100SW 150NW.

FORECAST VALID 14/0600Z 23.1N 85.5W
MAX WIND 140 KT...GUSTS 170 KT.
64 KT... 60NE 60SE 60SW 60NW.
50 KT... 90NE 90SE 90SW 90NW.
34 KT...150NE 150SE 100SW 120NW.

FORECAST VALID 14/1800Z 25.4N 86.0W
MAX WIND 125 KT...GUSTS 155 KT.
50 KT... 90NE 90SE 90SW 90NW.
34 KT...150NE 150SE 100SW 120NW.

FORECAST VALID 15/1800Z 28.0N 86.0W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 90NE 90SE 90SW 90NW.
34 KT...150NE 150SE 100SW 120NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM
ON DAY 4 AND 325 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 16/1800Z 32.5N 85.0W...INLAND
MAX WIND 55 KT...GUSTS 65 KT.

OUTLOOK VALID 17/1800Z 37.5N 81.0W...INLAND
MAX WIND 25 KT...GUSTS 35 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.3N 82.5W

NEXT ADVISORY AT 13/0300Z

FORECASTER STEWART