172 FZNT31 KNHC 240320 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1120 PM EDT Wed Aug 23 2023 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...Tropical Storm Franklin is near 21.2N 70.4W at 11 PM EDT, and is moving north-northeast at 13 kt. Maximum sustained winds are 40 kt with gusts to 50 kt, and the minimum central pressure is 1002 mb. Franklin will move to near 23N68W Thu evening, 24N66W Fri evening, strengthen to a hurricane Sat evening near 26N66W, move to near 29N 67.5W Sun evening, and N of the area near 33N67W Mon evening as a 95 kt hurricane. Conditions in the Caribbean will improve tonight. NW Caribbean W of 85W .OVERNIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SAT...SE winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SUN...S winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .MON...SW winds 10 to 15 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .OVERNIGHT...S winds less than 10 kt S of 18N, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .THU...SE winds less than 10 kt S of 18N, and SE 10 to 15 kt elsewhere. Seas 3 to 4 ft. .THU NIGHT...S of 18N, SE winds less than 10 kt, shifting to S after midnight. Elsewhere, SE winds less than 10 kt. Seas 2 ft or less. .FRI...S of 18N, S winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, SE winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SAT...S winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...S winds less than 10 kt. Seas 2 ft or less. .SUN...S of 18N, S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, S winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...S of 18N, SE winds 10 to 15 kt. Elsewhere, S winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .MON...S winds 10 to 15 kt. Seas 2 ft or less. Caribbean from 11N to 15N W of 72W .OVERNIGHT...Variable winds less than 10 kt within 90 nm of coast of Colombia, and SW 10 to 15 kt elsewhere. Seas 3 to 5 ft. .THU...S winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...SE winds 10 to 15 kt. Seas 2 ft or less. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT...Within 90 nm of coast of Colombia, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, SE winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SUN...SE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...Within 90 nm of coast of Colombia, NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less. .MON...E winds 10 to 15 kt. Seas 2 ft or less. SW Caribbean S of 11N .OVERNIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 ft. .THU NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .FRI...E winds 10 to 15 kt. Seas 2 ft or less. .FRI NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 2 ft or less. .SAT...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...SE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less. .MON...E winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .OVERNIGHT...SE winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .THU...NE winds less than 10 kt Gulf of Venezuela, and SE 10 to 15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...SE winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 ft elsewhere. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT...SE winds 10 to 15 kt. Seas 2 ft or less. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .SUN...NE winds less than 10 kt Gulf of Venezuela, and SE 10 to 15 kt elsewhere. Seas 3 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 ft. .MON...E winds 10 to 20 kt. Seas 3 to 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .OVERNIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .FRI...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT...S winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .SAT...SE winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .MON...E winds 10 to 20 kt. Seas 3 to 4 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Tropical Storm Franklin is near 21.2N 70.4W at 11 PM EDT, and is moving north-northeast at 13 kt. Maximum sustained winds are 40 kt with gusts to 50 kt, and the minimum central pressure is 1002 mb. Franklin will move to near 23N68W Thu evening, 24N66W Fri evening, strengthen to a hurricane Sat evening near 26N66W, move to near 29N 67.5W Sun evening, and N of the area near 33N67W Mon evening as a 95 kt hurricane. A cold front extending from 31N73W to 29N76W to Jacksonville, FL will reach from near 31N66W to West Palm Beach, FL Thu evening before stalling and gradually weakening. Fresh to locally strong northeast winds and building seas will continue north of the front through Thu. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...NE winds less than 10 kt. Seas 4 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 4 to 5 ft. .SUN...E winds less than 10 kt. Seas 4 to 5 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 4 ft. .MON...SE winds less than 10 kt. Seas 4 to 5 ft. ATLC waters from 27N to 31N between 65W and 77W .OVERNIGHT...W of 70W, NE winds 10 to 20 kt. Elsewhere, Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 4 to 6 ft. .THU...W of 70W, NE winds 10 to 20 kt. Elsewhere, N winds less than 10 kt, increasing to 10 to 20 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. .MON...HURRICANE CONDITIONS POSSIBLE. Bahamas N of 22N .OVERNIGHT...E winds 10 to 15 kt. Seas 3 ft. .THU...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .SAT...NE winds less than 10 kt. Seas 3 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. .SUN...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .MON...S winds less than 10 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, E winds 20 to 30 kt. Elsewhere, S winds 20 to 30 kt, increasing to 30 to 40 kt after midnight. Seas 6 to 9 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. NE winds 15 to 25 kt W of 70W, and SE 35 to 45 kt elsewhere. Seas 8 to 12 ft. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 10 to 20 kt W of 70W, and SE 40 to 50 kt elsewhere. Seas 5 to 7 ft W of 70W, and 8 to 14 ft elsewhere. .FRI...TROPICAL STORM CONDITIONS EXPECTED. NE winds 10 to 15 kt W of 70W, and E 45 to 55 kt elsewhere. Seas 5 to 7 ft W of 70W, and 9 to 15 ft elsewhere. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to 15 kt W of 70W, and NE 45 to 55 kt elsewhere. Seas 5 to 7 ft W of 70W, and 8 to 13 ft elsewhere. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .MON...SW winds 10 to 15 kt W of 70W, and SW 15 to 25 kt elsewhere. Seas 4 to 6 ft W of 70W, and 6 to 9 ft elsewhere. ATLC waters S of 22N W of 65W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. SE winds 30 to 40 kt. Seas 7 to 11 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. S winds 30 to 40 kt. Seas 6 to 9 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 kt. Seas 3 to 5 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. W winds 15 to 25 kt. Seas 4 to 6 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W winds 15 to 25 kt. Seas 4 to 6 ft. .SAT...W winds 15 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...SW winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...E winds less than 10 kt. Seas 4 to 5 ft. .THU...E winds less than 10 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 4 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 25 kt. Seas 4 to 6 ft. .SAT...SE winds 15 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 5 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. .MON...SE winds 10 to 15 kt. Seas 4 ft.