000 FZNT31 KNHC 311508 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1108 AM EDT Fri Jul 31 2020 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W including Bahamas, and the Caribbean Sea. Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. Synopsis for Caribbean Sea and Tropical N Atlantic from 07N to 19N between 55W and 64W .SYNOPSIS...Hurricane Isaias is centered near 21.7N 74.5W 992 mb at 11 AM EDT moving NW at 14 kt. Maximum sustained winds 65 kt gusts 80 kt. Isaias will move to the Central Bahamas near 23.0N 76.1W this evening, then continue moving northward away from the region this weekend. Fresh winds and high seas will prevail today through the Mona Passage and Windward Passage. Fresh to strong flow will persist south of Hispaniola through Fri night. NW Caribbean W of 85W .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 ft. .MON...E winds less than 10 kt. Seas 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. .TUE...E winds less than 10 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...N winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .THIS AFTERNOON...NW winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .SAT...NW winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .SUN...N winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .TUE...NE winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .THIS AFTERNOON...SE winds less than 10 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .TONIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .SUN...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...Gulf of Venezuela, E winds 10 to 15 kt, shifting to S in the afternoon,Seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, E winds 10 to 20 kt,Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .TUE...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft elsewhere. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 5 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Hurricane Isaias is centered near 21.7N 74.5W 992 mb at 11 AM EDT moving NW at 14 kt. Maximum sustained winds 65 kt gusts 80 kt. Isaias will move toward the Central Bahamas near 23.0N 76.1W this evening, near the NW Bahamas 24.8N 78.0W Sat morning, then move near the east coast of the Florida Peninsula to 26.3N 79.2W Sat evening, 27.7N 79.8W Sun morning, 29.2N 80.0W Sun evening, and 31.6N 79.5W Mon morning. Very large seas in SE swell are expected over a large portion of the SW North Atlantic waters near and offshore of the Bahamas tonight into Sat. ATLC waters from 27N to 31N W of 77W ...HURRICANE WARNING... .THIS AFTERNOON...S winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 15 to 25 kt, becoming E 25 to 35 kt in the afternoon. Seas 8 to 12 ft. .SAT NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 40 to 50 kt, becoming SE 55 to 65 kt after midnight. Seas 10 to 15 ft. .SUN...HURRICANE CONDITIONS POSSIBLE. SE winds 55 to 70 kt. Seas 13 to 18 ft. .SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. .MON...HURRICANE CONDITIONS POSSIBLE. .MON NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...S winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 7 to 10 ft W of 70W, and 5 to 7 ft elsewhere. .TONIGHT...SE winds 10 to 20 kt. Seas 8 to 11 ft W of 70W, and 5 to 7 ft elsewhere. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft W of 70W, and 5 to 6 ft elsewhere. .SAT NIGHT...SE winds 10 to 20 kt. Seas 7 to 10 ft W of 70W, and 5 to 6 ft elsewhere. .SUN...SE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .MON...TROPICAL STORM CONDITIONS POSSIBLE. .MON NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...SE winds 10 to 20 kt. Seas 5 to 7 ft. Bahamas N of 22N ...HURRICANE WARNING... .THIS AFTERNOON...HURRICANE CONDITIONS. E winds 55 to 65 kt. Seas 9 to 14 ft. .TONIGHT...HURRICANE CONDITIONS EXPECTED. E winds 60 to 70 kt. Seas 8 to 13 ft. .SAT...HURRICANE CONDITIONS EXPECTED. SE winds 65 to 75 kt. Seas 8 to 13 ft. .SAT NIGHT...HURRICANE CONDITIONS EXPECTED. SE winds 60 to 75 kt. Seas 8 to 12 ft. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to 40 kt, diminishing to 10 to 20 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...TROPICAL STORM WARNING... .THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 35 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 12 to 17 ft W of 70W, and 7 to 10 ft elsewhere. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 10 to 15 ft W of 70W, and 6 to 9 ft elsewhere. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 25 kt W of 70W, and E 10 to 15 kt elsewhere. W of 70W, seas 9 to 14 ft, subsiding to 8 to 11 ft in the afternoon. Elsewhere, seas 6 to 8 ft. .SAT NIGHT...SE winds 10 to 20 kt W of 70W, and E 10 to 15 kt elsewhere. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 ft. .MON...E winds 10 to 15 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 5 to 6 ft W of 70W, and 6 to 9 ft elsewhere. .MON NIGHT...SE winds 10 to 15 kt W of 70W, and SE 15 to 25 kt elsewhere. Seas 5 to 6 ft W of 70W, and 6 to 9 ft elsewhere. .TUE...SE winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W ...HURRICANE WARNING... .THIS AFTERNOON...HURRICANE CONDITIONS. SE winds 55 to 65 kt. Seas 9 to 14 ft. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 35 to 45 kt, becoming SE 10 to 20 kt after midnight. Seas 7 to 10 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...E winds 15 to 20 kt. Seas 7 to 8 ft. .TONIGHT...E winds 15 to 20 kt. Seas 7 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 15 to 25 kt. Seas 6 to 9 ft. .SUN NIGHT...SE winds 15 to 25 kt. Seas 6 to 9 ft. .MON...SE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 5 ft.