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| #535923 (Received by flhurricane at: 4:57 PM 21.Aug.2012) TCMAT4 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 |
