Offshore Forecast
Issued by NWS
Issued by NWS
370 FZNT31 KNHC 070300 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1000 PM EST Sat Dec 6 2025 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 19N W of 55W, the N Atlantic from 19N to 31N W of 55W including the 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 W of 55W .SYNOPSIS...A moderate pressure gradient between a weak Atlantic ridge along 26N, north of the Greater Antilles, and lower pressures in northern South America will sustain moderate to fresh easterly trade winds and moderate seas over the central and eastern Caribbean through the middle of next week. Strong winds will pulse off NW Colombia tonight, along with locally rough seas. Moderate or lighter winds and slight to moderate seas will prevail elsewhere. A persistent E-NE swell will support rough seas across the Atlantic waters and passages of the Lesser Antilles through next Thu. Looking ahead, a weakening cold front will approach the northwestern Caribbean on Tue and linger across the Yucatan Channel and Straits of Florida through Wed. High pressure will build across the eastern Gulf of America by the middle of next week, leading to strong winds and rough seas in the south- central Caribbean into late next week. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 ft. .TUE...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .WED...Variable winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .MON...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .SUN...Variable winds less than 10 kt. Seas 4 to 6 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .MON...Variable winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .TUE...N winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...N winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .THU...NE winds 10 to 15 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 8 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front extends from 31N72W to near Cocoa Beach, Florida. Fresh to locally strong winds and moderate to rough seas are noted ahead of and behind the front north of 29N. These winds and seas will shift quickly eastward tonight into Sun, as the front moves eastward. The front will extend from near Bermuda to central Florida by early Sun morning, then dissipate Sun afternoon. A complex low pressure system and strong cold front will into the northwestern tropical Atlantic Sun night and Mon, supporting widespread fresh to near gale-force winds and building seas ahead of and behind the front Mon through Tue. The cold front will reach from near Bermuda to the NW Bahamas and Straits of Florida Tue morning, then gradually weaken and stall along about 26N early Wed. Large N swell will move into the regional waters Tue through Wed then diminish Wed night. ATLC waters from 27N to 31N W of 77W .TONIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .MON...NW winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. .TUE...NE winds 15 to 20 kt, diminishing to 10 kt in the afternoon. Seas 7 to 10 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 6 to 8 ft. .WED...SE winds less than 10 kt, shifting to S in the afternoon. Seas 5 to 7 ft. .WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .THU...W winds 10 kt. Seas 4 to 6 ft. .THU NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...W of 70W, SE winds less than 10 kt. Elsewhere, W winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 8 ft. .SUN NIGHT...W of 70W, S winds less than 10 kt, shifting to SW after midnight. Elsewhere, S winds less than 10 kt. Seas 5 to 6 ft. .MON...W winds 10 to 20 kt W of 70W, and SW 15 to 25 kt elsewhere. Seas 6 to 9 ft. .MON NIGHT...W winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...N winds 10 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 8 to 12 ft. .WED...SE winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. .THU...SW winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. Bahamas N of 22N .TONIGHT...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...S winds less than 10 kt. Seas 3 to 4 ft. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .WED...S winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. .THU...Variable winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...S winds less than 10 kt. Seas 5 to 6 ft. .SUN...SE winds less than 10 kt. Seas 5 to 6 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft. .MON...S winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NW winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 15 kt, shifting to E after midnight. Seas 5 to 7 ft. .WED...SE winds 10 kt. Seas 6 to 9 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 7 to 8 ft. .THU...S winds 10 to 15 kt. Seas 6 to 8 ft. .THU NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .MON NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .TUE...E winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .MON...E winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 8 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 8 to 10 ft.