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Tropical Storm ISAAC (Text)

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TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER   3
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
2100 UTC TUE AUG 21 2012
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* MARTINIQUE
* DOMINICA
* GUADELOUPE AND THE SURROUNDING ISLANDS...AND ST. MARTIN
* ST. KITTS...NEVIS...ANTIGUA...MONTSERRAT...ANGUILLA...AND BARBUDA
* SABA...ST. EUSTATIUS...AND ST. MAARTEN
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* BRITISH VIRGIN ISLANDS
* PUERTO RICO...VIEQUES...CULEBRA...AND THE U.S. VIRGIN ISLANDS
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
INTERESTS ELSEWHERE IN HISPANIOLA AND CUBA SHOULD MONITOR THE
PROGRESS OF ISAAC.
 
TROPICAL STORM CENTER LOCATED NEAR 15.4N  53.9W AT 21/2100Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT  15 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS  35 KT WITH GUSTS TO  45 KT.
34 KT....... 40NE   0SE   0SW   0NW.
12 FT SEAS.. 40NE   0SE   0SW   0NW.
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 15.4N  53.9W AT 21/2100Z
AT 21/1800Z CENTER WAS LOCATED NEAR 15.3N  53.2W
 
FORECAST VALID 22/0600Z 15.6N  56.4W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 50NE  30SE  20SW  50NW.
 
FORECAST VALID 22/1800Z 15.9N  59.8W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 60NE  30SE  30SW  60NW.
 
FORECAST VALID 23/0600Z 16.3N  63.1W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE   0SE   0SW  20NW.
34 KT... 70NE  40SE  30SW  70NW.
 
FORECAST VALID 23/1800Z 16.6N  66.3W
MAX WIND  65 KT...GUSTS  80 KT.
50 KT... 40NE  30SE  20SW  40NW.
34 KT... 90NE  60SE  40SW  90NW.
 
FORECAST VALID 24/1800Z 17.0N  71.0W
MAX WIND  75 KT...GUSTS  90 KT.
50 KT... 50NE  30SE  20SW  50NW.
34 KT...110NE  70SE  50SW 110NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM
ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
 
OUTLOOK VALID 25/1800Z 19.5N  75.0W
MAX WIND  75 KT...GUSTS  90 KT.
 
OUTLOOK VALID 26/1800Z 21.5N  78.0W...INLAND
MAX WIND  65 KT...GUSTS  80 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.4N  53.9W
 
NEXT ADVISORY AT 22/0300Z
 
$$
FORECASTER BEVEN
 
 
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