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TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 4
NATIONAL WEATHER SERVICE MIAMI FL AL1300
0900Z FRI SEP 22 2000
TROPICAL STORM CENTER LOCATED NEAR 12.7N 28.2W AT 22/0900Z
POSITION ACCURATE WITHIN 45 NM
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 17 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT....... 70NE 55SE 55SW 70NW.
12 FT SEAS.. 70NE 55SE 55SW 70NW.
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 12.7N 28.2W AT 22/0900Z
AT 22/0600Z CENTER WAS LOCATED NEAR 12.6N 27.4W
FORECAST VALID 22/1800Z 13.2N 30.5W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 25NE 25SE 25SW 25NW.
34 KT... 80NE 65SE 65SW 80NW.
FORECAST VALID 23/0600Z 13.6N 33.2W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 25NE 25SE 25SW 25NW.
34 KT... 85NE 70SE 70SW 85NW.
FORECAST VALID 23/1800Z 14.1N 36.2W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 20NE 20SE 20SW 20NW.
50 KT... 35NE 35SE 35SW 35NW.
34 KT... 90NE 70SE 70SW 90NW.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.7N 28.2W
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
OUTLOOK VALID 24/0600Z 14.4N 38.5W
MAX WIND 75 KT...GUSTS 90 KT.
50 KT... 45NE 35SE 35SW 45NW.
OUTLOOK VALID 25/0600Z 15.0N 43.5W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 55NE 45SE 45SW 55NW.
NEXT ADVISORY AT 22/1500Z
FORECASTER STEWART
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