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Tropical Storm Isaias Forecast Advisory Number 9
2020-07-30 16:50:20| National Hurricane Center (Atlantic)
Issued at 1500 UTC THU JUL 30 2020 000 WTNT24 KNHC 301450 TCMAT4 TROPICAL STORM ISAIAS FORECAST/ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 1500 UTC THU JUL 30 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF ANTIGUA HAS DISCONTINUED THE TROPICAL STORM WARNING FOR THE BRITISH VIRGIN ISLANDS. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * PUERTO RICO...VIEQUES...CULEBRA * U.S. VIRGIN ISLANDS * DOMINICAN REPUBLIC ENTIRE SOUTHERN AND NORTHERN COASTLINES * NORTH COAST OF HAITI FROM LE MOLE ST NICHOLAS EASTWARD TO THE NORTHERN BORDER WITH THE DOMINICAN REPUBLIC * TURKS AND CAICOS ISLANDS * SOUTHEASTERN BAHAMAS INCLUDING THE ACKLINS...CROOKED ISLAND...LONG CAY...THE INAGUAS...MAYAGUANA...AND THE RAGGED ISLANDS * CENTRAL BAHAMAS...INCLUDING CAT ISLAND...THE EXUMAS...LONG ISLAND...RUM CAY...AND SAN SALVADOR A TROPICAL STORM WATCH IS IN EFFECT FOR... * NORTHWESTERN BAHAMAS INCLUDING ANDROS ISLAND...NEW PROVIDENCE...ELEUTHERA...ABACOS ISLANDS...BERRY ISLANDS...GRAND BAHAMAS ISLAND...AND BIMINI INTERESTS IN CUBA AND THE FLORIDA PENINSULA SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. WATCHES MAY BE REQUIRED FOR A PORTION OF THE FLORIDA PENINSULA LATER TODAY. 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. TROPICAL STORM CENTER LOCATED NEAR 18.1N 68.9W AT 30/1500Z POSITION ACCURATE WITHIN 75 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 17 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 80NE 0SE 0SW 0NW. 34 KT.......270NE 90SE 0SW 210NW. 12 FT SEAS..420NE 0SE 0SW 360NW. 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 18.1N 68.9W AT 30/1500Z AT 30/1200Z CENTER WAS LOCATED NEAR 17.7N 68.5W FORECAST VALID 31/0000Z 19.7N 71.4W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT...210NE 90SE 0SW 160NW. FORECAST VALID 31/1200Z 21.4N 74.2W...OVER WATER MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 0SE 0SW 0NW. 34 KT...180NE 90SE 0SW 150NW. FORECAST VALID 01/0000Z 23.0N 76.5W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 40NE 20SE 0SW 0NW. 34 KT...140NE 90SE 30SW 90NW. FORECAST VALID 01/1200Z 24.6N 78.2W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 40NE 20SE 0SW 20NW. 34 KT...120NE 90SE 50SW 90NW. FORECAST VALID 02/0000Z 26.2N 79.4W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 40NE 30SE 20SW 20NW. 34 KT...120NE 90SE 50SW 70NW. FORECAST VALID 02/1200Z 28.0N 79.9W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 40NE 30SE 20SW 20NW. 34 KT...120NE 90SE 50SW 60NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 03/1200Z 31.5N 79.1W MAX WIND 60 KT...GUSTS 75 KT. OUTLOOK VALID 04/1200Z 37.5N 73.5W MAX WIND 60 KT...GUSTS 75 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.1N 68.9W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 30/1800Z NEXT ADVISORY AT 30/2100Z $$ FORECASTER BROWN
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