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HURRICANE ISAAC FORECAST/ADVISORY NUMBER 21
NATIONAL WEATHER SERVICE MIAMI FL AL1300
1500Z TUE SEP 26 2000
HURRICANE CENTER LOCATED NEAR 18.8N 44.4W AT 26/1500Z
POSITION ACCURATE WITHIN 20 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 10 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 975 MB
MAX SUSTAINED WINDS 80 KT WITH GUSTS TO 95 KT.
64 KT....... 25NE 25SE 25SW 25NW.
50 KT....... 60NE 45SE 45SW 60NW.
34 KT.......140NE 120SE 100SW 140NW.
12 FT SEAS..250NE 150SE 150SW 250NW.
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 18.8N 44.4W AT 26/1500Z
AT 26/1200Z CENTER WAS LOCATED NEAR 18.6N 43.9W
FORECAST VALID 27/0000Z 19.3N 45.9W
MAX WIND 75 KT...GUSTS 85 KT.
64 KT... 25NE 25SE 25SW 25NW.
50 KT... 60NE 45SE 45SW 60NW.
34 KT...140NE 120SE 100SW 140NW.
FORECAST VALID 27/1200Z 20.5N 48.0W
MAX WIND 75 KT...GUSTS 85 KT.
64 KT... 25NE 25SE 25SW 25NW.
50 KT... 60NE 45SE 45SW 60NW.
34 KT...140NE 120SE 100SW 140NW.
FORECAST VALID 28/0000Z 22.0N 50.0W
MAX WIND 80 KT...GUSTS 95 KT.
64 KT... 25NE 25SE 25SW 25NW.
50 KT... 60NE 45SE 45SW 60NW.
34 KT...140NE 120SE 100SW 140NW.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.8N 44.4W
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
OUTLOOK VALID 28/1200Z 23.5N 52.0W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 60NE 45SE 45SW 60NW.
OUTLOOK VALID 29/1200Z 27.5N 56.5W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 60NE 45SE 45SW 60NW.
NEXT ADVISORY AT 26/2100Z
FORECASTER PASCH
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