Offshore Forecast
Issued by NWS
Issued by NWS
637 FZNT23 KWNM 170845 OFFN01 NAVTEX Marine Forecast for NE US waters NWS Ocean Prediction Center Washington DC 445 AM EDT Thu Sep 17 2026 Conditions given represent the highest within that period. Locally higher winds and seas can be expected in and near tstms. ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed coastal waters forecasts... .SYNOPSIS...High pressure will persist across the waters today, then shift E of the region tonight. A cold front will reach the New England coast tonight, then move S over the region Fri. Another high will build SE across the region Fri night into Sat, then shift E of the waters Sat night. A warm front will lift N into the area Sun and Sun night, before low pressure moves E across the waters Sun night and Mon while pulling a cold front over the area. Yet another high will build SE towards the region later Mon and Mon night. Eastport Maine to Cape Cod .TODAY...S winds less than 10 kt. Seas 3 to 4 ft. Areas of fog with vsby 1 nm or less. .TONIGHT...SW winds 10 to 20 kt. Seas 3 to 4 ft. Chance of showers with vsby 1 nm or less. .FRI...NW winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 4 to 6 ft. .SAT...Variable winds 10 to 20 kt. Seas 3 to 6 ft. .SAT NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .SUN...S to SE winds 5 to 15 kt. Seas 3 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 4 to 7 ft. .MON...N to NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 6 ft. Cape Cod to Nantucket Shoals and Georges Bank .TODAY...Variable winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...SW winds 5 to 15 kt. Seas 3 to 4 ft. .FRI...W winds 10 to 20 kt. Seas 3 to 5 ft. Chance of showers. .FRI NIGHT...N to NE winds 15 to 25 kt. Seas 3 to 6 ft. .SAT...NE winds 10 to 20 kt. Seas 4 to 7 ft. .SAT NIGHT...E winds 5 to 15 kt. Seas 4 to 6 ft. .SUN...S to SE winds 5 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 4 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 4 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. South of New England .TODAY...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. .TONIGHT...SW winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...N winds 10 to 20 kt. Seas 3 to 5 ft. Chance of showers. .FRI NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E to NE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E to SE winds 5 to 15 kt. Seas 3 to 6 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 7 ft. .SUN NIGHT...N winds 15 to 25 kt. Seas 5 to 7 ft. .MON...NE winds 15 to 25 kt. Seas 4 to 7 ft. .MON NIGHT...NE winds 20 to 30 kt. Seas 5 to 7 ft.