


Offshore Forecast
Issued by NWS
Issued by NWS
859 FZNT21 KWBC 280909 OFFNT1 Offshore Waters Forecast NWS Ocean Prediction Center Washington DC 509 AM EDT Thu Aug 28 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. ANZ898-281945- 509 AM EDT Thu Aug 28 2025 .SYNOPSIS FOR NEW ENGLAND WATERS...High pressure will build over the southern waters today as a weak low pressure trough crosses the N waters. The high will move E of the area later today into Fri as a cold front approaches from the W. The front will move slowly offshore Fri night into Sat, then pass E of the area later Sat and Sat night. Another weak low pressure trough will move SE over the region Sat night into Sun. Another high will build SE across the area Sun and Sun night, then persist Mon and Mon night. $$ ANZ800-281945- Gulf of Maine to the Hague Line- 509 AM EDT Thu Aug 28 2025 .TODAY...W to NW winds 5 to 10 kt, becoming S to SW 5 to 15 kt. Seas 3 to 4 ft. .TONIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to 4 ft. .FRI...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 4 ft. Chance of showers and tstms. .FRI NIGHT...S winds 10 to 20 kt, becoming S to SW 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and chance of tstms. .SAT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...SW winds 5 to 15 kt, becoming NW. Seas 3 to 4 ft. .SUN...NW winds 5 to 15 kt, becoming W to NW. Seas 3 to 4 ft. .SUN NIGHT...W to NW winds less than 10 kt, becoming N to NE. Seas 3 to 4 ft. .MON...NE winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 3 ft, becoming 2 ft or less. $$ ANZ805-281945- Georges Bank between Cape Cod and 68W north of 1000 FM- 509 AM EDT Thu Aug 28 2025 .TODAY...NW winds 5 to 10 kt, becoming W to SW, then, becoming S to SW. Seas 3 to 4 ft. .TONIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. .FRI...S winds 5 to 15 kt. Seas 3 to 4 ft. Chance of showers and tstms. .FRI NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and chance of tstms. .SAT...S to SW winds 5 to 15 kt, becoming W 5 to 10 kt. Seas 3 to 4 ft. .SAT NIGHT...W to SW winds 5 to 15 kt, becoming W to NW. Seas 3 to 4 ft. .SUN...N to NW winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...N to NE winds less than 10 kt. Seas 3 to 4 ft. .MON...NE winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E to NE winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to 4 ft. $$ ANZ900-281945- Georges Bank between 68W and the Hague Line- 509 AM EDT Thu Aug 28 2025 .TODAY...W winds 5 to 10 kt, becoming S to SW. Seas 3 to 4 ft. .TONIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. .FRI...S to SE winds 5 to 10 kt, becoming E to SE. Seas 3 to 4 ft. .FRI NIGHT...E to SE winds less than 10 kt, becoming S to SW. Seas 3 to 4 ft. Scattered showers and tstms with vsby 1 nm or less. .SAT...S winds 5 to 15 kt, becoming W to SW. Seas 3 to 4 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. .SUN...W to NW winds 5 to 10 kt, becoming N to NW. Seas 3 to 4 ft. .SUN NIGHT...N to NE winds 5 to 10 kt. Seas 3 to 4 ft. .MON...NE winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NE winds 5 to 15 kt. Seas 3 to 4 ft. $$ ANZ810-281945- South of New England between the Great South Channel and Montauk Point to 1000 FM- 509 AM EDT Thu Aug 28 2025 .TODAY...NW winds 5 to 10 kt, becoming W, then, becoming SW. Seas 3 to 4 ft. .TONIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. .FRI...S winds 5 to 15 kt. Seas 3 to 4 ft. Chance of showers and tstms. .FRI NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and chance of tstms. .SAT...W to NW winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to 4 ft. .SAT NIGHT...W winds 5 to 15 kt, becoming NW 5 to 10 kt. Seas 3 to 4 ft. .SUN...N to NW winds 5 to 10 kt, becoming variable. Seas 3 to 4 ft. .SUN NIGHT...E to NE winds less than 10 kt, becoming NE. Seas 3 to 4 ft. .MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E to NE winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 3 to 4 ft. $$ ANZ815-281945- South of Long Island between Montauk Point and Sandy Hook to 1000 FM- 509 AM EDT Thu Aug 28 2025 .TODAY...NW winds 5 to 10 kt, becoming W to SW, then, becoming S to SW 10 to 20 kt. Seas 3 to 4 ft. .TONIGHT...S to SW winds 10 to 20 kt. Seas 3 to 4 ft. Chance of tstms. .FRI...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Chance of showers and tstms. .FRI NIGHT...SW winds 5 to 15 kt, becoming N. Seas 3 to 4 ft. .SAT...NW winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...W to SW winds 5 to 15 kt, becoming N to NW. Seas 3 to 4 ft. .SUN...N winds less than 10 kt, becoming variable. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming NE. Seas 3 to 4 ft. .MON...E to NE winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E to NE winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 3 to 4 ft. $$ .Forecaster Bancroft. Ocean Prediction Center.