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Hurricane Isaias Forecast Advisory Number 12
2020-07-31 05:57:03| National Hurricane Center (Atlantic)
Issued at 0400 UTC FRI JUL 31 2020 000 WTNT24 KNHC 310356 TCMAT4 HURRICANE ISAIAS SPECIAL FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 0400 UTC FRI JUL 31 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF THE BAHAMAS HAS ISSUED A HURRICANE WARNING FOR THE CENTRAL AND SOUTHEASTERN BAHAMAS...WHICH INCLUDE THE ACKLINS... CROOKED ISLAND...LONG CAY...THE INAGUAS...MAYAGUANA...THE RAGGED ISLANDS...CAT ISLAND...THE EXUMAS...LONG ISLAND...RUM CAY...AND SAN SALVADOR. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * NORTHWESTERN BAHAMAS INCLUDING ANDROS ISLAND...NEW PROVIDENCE...ELEUTHERA...ABACOS ISLANDS...BERRY ISLANDS...GRAND BAHAMAS ISLAND...AND BIMINI * 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 WARNING IS IN EFFECT FOR... * 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 A TROPICAL STORM WATCH IS IN EFFECT FOR... * EAST COAST OF FLORIDA FROM OCEAN REEF TO SEBASTIAN INLET * LAKE OKEECHOBEE INTERESTS ELSEWHERE ALONG THE SOUTHEAST COAST OF THE UNITED STATES SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. ADDITIONAL WATCHES OR WARNINGS MAY BE REQUIRED FOR A PORTION OF THE FLORIDA PENINSULA ON FRIDAY. A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED 36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION. 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. HURRICANE CENTER LOCATED NEAR 20.4N 72.2W AT 31/0400Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 16 KT ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB MAX SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT. 64 KT....... 25NE 0SE 0SW 0NW. 50 KT....... 80NE 40SE 20SW 80NW. 34 KT.......210NE 120SE 30SW 180NW. 12 FT SEAS..420NE 120SE 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 20.4N 72.2W AT 31/0400Z AT 31/0000Z CENTER WAS LOCATED NEAR 19.9N 71.2W FORECAST VALID 31/1200Z 21.6N 73.9W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 25NE 0SE 0SW 20NW. 50 KT... 60NE 40SE 20SW 60NW. 34 KT...200NE 90SE 30SW 150NW. FORECAST VALID 01/0000Z 23.5N 76.1W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 15SE 10SW 20NW. 50 KT... 50NE 30SE 20SW 40NW. 34 KT...160NE 100SE 40SW 140NW. FORECAST VALID 01/1200Z 25.2N 77.8W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 15SE 10SW 20NW. 50 KT... 40NE 30SE 20SW 40NW. 34 KT...120NE 100SE 40SW 100NW. FORECAST VALID 02/0000Z 26.7N 79.0W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 0SE 0SW 20NW. 50 KT... 40NE 30SE 20SW 40NW. 34 KT...110NE 90SE 50SW 90NW. FORECAST VALID 02/1200Z 28.3N 79.6W MAX WIND 65 KT...GUSTS 80 KT. 50 KT... 40NE 30SE 20SW 40NW. 34 KT...110NE 90SE 50SW 80NW. FORECAST VALID 03/0000Z 30.0N 79.5W MAX WIND 65 KT...GUSTS 80 KT. 50 KT... 40NE 30SE 20SW 40NW. 34 KT...110NE 90SE 50SW 80NW. 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 04/0000Z 34.6N 76.8W MAX WIND 65 KT...GUSTS 80 KT. OUTLOOK VALID 05/0000Z 42.0N 69.0W MAX WIND 60 KT...GUSTS 75 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.4N 72.2W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 31/0600Z NEXT ADVISORY AT 31/0900Z $$ FORECASTER BLAKE
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