


Offshore Forecast
Issued by NWS
Issued by NWS
945 FZNT23 KWNM 050342 OFFN01 NAVTEX Marine Forecast for NE US waters NWS Ocean Prediction Center Washington DC 1142 PM EDT Thu Sep 4 2025 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...Weak high pressure will exit the area tonight as a series of weak lows move NE along a surface front nearly stationary just SE of the waters. A slow-moving cold front approaches the coast late tonight, and weakens as it moves E across the waters Fri and Fri night. A stronger cold front approaches from the W Sat, moves into the area Sat night, and finally passes through the area by late Sun night and early Mon. The front will then become nearly stationary just SE of the waters Mon night with weak lows moving NE along the front. High pressure builds into the waters behind the front and persists through Tue night. The front will slowly drift NW as a warm front late Tue and Tue night. Eastport Maine to Cape Cod .TONIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers and slight chance of tstms. Areas of fog with vsby 1 nm or less. .FRI NIGHT...S winds 10 to 20 kt. Seas 4 to 7 ft. Chance of rain. Areas of fog with vsby 1 nm or less. .SAT...S winds 15 to 25 kt. Seas 4 to 6 ft. Chance of rain. Areas of fog with vsby 1 nm or less. .SAT NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 6 ft. .SUN...S to SW winds 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...W to NW winds 5 to 15 kt. Seas 4 to 6 ft. .MON...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...Winds becoming N 5 to 15 kt. Seas 3 to 4 ft. .TUE...NE winds 5 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. Cape Cod to Nantucket Shoals and Georges Bank .TONIGHT...S winds less than 10 kt, becoming variable. Seas 3 to 5 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .FRI...S winds 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and slight chance of tstms. Areas of fog with vsby 1 nm or less. .FRI NIGHT...S winds 5 to 15 kt. Seas 3 to 5 ft. Scattered showers and isolated tstms. Areas of fog with vsby 1 nm or less. .SAT...S winds 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and tstms. Areas of fog with vsby 1 nm or less. .SAT NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. .SUN...S to SW winds 15 to 25 kt. Seas 5 to 8 ft. .SUN NIGHT...N to NW winds 10 to 20 kt. Seas 5 to 7 ft. .MON...N to NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft. .TUE...NE winds 15 to 25 kt. Seas 5 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 8 ft. South of New England .TONIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers. Slight chance of tstms. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 3 to 6 ft. Scattered showers. Areas of fog NE portion with vsby 1 nm or less. .SAT...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers and tstms. Areas of fog N portion with vsby 1 nm or less. .SAT NIGHT...S winds 15 to 25 kt. Seas 4 to 7 ft. .SUN...S to SW winds 15 to 25 kt. Seas 5 to 8 ft. .SUN NIGHT...Winds becoming N 10 to 20 kt. Seas 3 to 6 ft. .MON...N to NE winds 10 to 20 kt. Seas 3 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 7 ft. .TUE...NE winds 15 to 25 kt. Seas 5 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 8 ft.