


Offshore Forecast
Issued by NWS
Issued by NWS
139 FZNT21 KWBC 040822 OFFNT1 Offshore Waters Forecast NWS Ocean Prediction Center Washington DC 422 AM EDT Thu Sep 4 2025 New England continental shelf and slope waters from 25 nm offshore to the Hague Line, except to 1000 fm south of New England. 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. Locally higher winds and seas can be expected in and near tstms. ANZ898-042000- 422 AM EDT Thu Sep 4 2025 .SYNOPSIS FOR NEW ENGLAND WATERS...Weak high pressure will remain over the area today as weak lows move NE along a surface front nearly stationary just SE of the waters. High pressure gradually shifts E late today and tonight ahead of a cold front. This slow-moving front approaches the coast late tonight, and weakens as it moves E across the waters Fri and Fri night. Another, 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. $$ ANZ800-042000- Gulf of Maine to the Hague Line- 422 AM EDT Thu Sep 4 2025 .TODAY...S to SW winds less than 10 kt, becoming S. Seas 3 to 4 ft. Areas of fog far NE portion with vsby 1 nm or less. .TONIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. Isolated showers. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers and slight chance of tstms. .FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 6 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .SAT...S winds 15 to 20 kt, increasing to 20 to 30 kt. Seas 4 to 6 ft. .SAT NIGHT...S to SW winds 15 to 25 kt. Seas 3 to 6 ft. .SUN...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...W to NW winds 5 to 15 kt. Seas 3 to 5 ft. .MON...N to NW winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...W to SW winds 5 to 15 kt, becoming N to NW 10 to 20 kt. Seas 3 to 4 ft. $$ ANZ805-042000- Georges Bank between Cape Cod and 68W north of 1000 FM- 422 AM EDT Thu Sep 4 2025 .TODAY...Variable winds less than 10 kt, becoming S to SE. Seas 3 to 4 ft. .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 5 to 15 kt, increasing to 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 3 to 5 ft. Areas of fog and isolated showers with vsby 1 nm or less. .SAT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 20 kt, becoming SW. Seas 3 to 5 ft. .SUN...S winds 15 to 25 kt, becoming SW 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...W to SW winds 5 to 15 kt, becoming N to NW. Seas 3 to 6 ft. .MON...N to NW winds 5 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...N winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. $$ ANZ900-042000- Georges Bank between 68W and the Hague Line- 422 AM EDT Thu Sep 4 2025 .TODAY...NE winds less than 10 kt, becoming variable. Seas 3 to 4 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .FRI...S winds 5 to 15 kt. Seas 3 to 5 ft. Areas of fog with vsby 1 nm or less. .FRI NIGHT...S winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to 5 ft. Isolated showers. Areas of fog with vsby 1 nm or less. .SAT...S winds 5 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 3 to 5 ft. .SUN...S to SW winds 15 to 25 kt. Seas 4 to 6 ft. .SUN NIGHT...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to 6 ft. .MON...Winds becoming N to NW 5 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...N winds 5 to 15 kt. Seas 3 to 5 ft. $$ ANZ810-042000- South of New England between the Great South Channel and Montauk Point to 1000 FM- 422 AM EDT Thu Sep 4 2025 .TODAY...Variable winds less than 5 kt, becoming S. Seas 3 to 4 ft. .TONIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. Isolated showers. .FRI...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 5 ft. Scattered showers and slight chance of tstms. .FRI NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Areas of fog developing NE portion with vsby 1 nm or less. .SAT...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 4 ft. .SAT NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...S to SW winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NW winds 5 to 15 kt, becoming N to NW 10 to 20 kt. Seas 4 to 6 ft. .MON...N winds 5 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...N winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. $$ ANZ815-042000- South of Long Island between Montauk Point and Sandy Hook to 1000 FM- 422 AM EDT Thu Sep 4 2025 .TODAY...Variable winds less than 5 kt, becoming S, then, increasing to 5 to 15 kt. Seas 3 to 4 ft. Isolated showers mainly early. .TONIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers. Slight chance of tstms. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 4 to 5 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 4 to 5 ft. .SAT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas 3 to 5 ft. .SUN...Winds becoming N 5 to 15 kt, then becoming NW. Seas 3 to 5 ft. .SUN NIGHT...N to NW winds 10 to 20 kt. Seas 3 to 5 ft. .MON...N winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...N winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. $$ .Forecaster Figurskey. Ocean Prediction Center.