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Offshore Forecast
Issued by NWS
Issued by NWS
819 FZNT33 KWBC 170830 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 430 AM EDT Sat Aug 17 2024 New England continental shelf and slope waters from 25 nm offshore to the Hague Line, except to 1000 fm south of New England. Conditions given represent the highest within that period. 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. .SYNOPSIS FOR NEW ENGLAND WATERS...High pressure over the area early today will slowly shift NE of the region later today and tonight while maintaining a weakening ridge westward across the waters. The weak ridge will drift N of the region Sun and Sun night as Hurricane Ernesto passes SE and then E of the waters. Long period SE swell from Ernesto will move into the area today, and continue into Mon night. See the latest National Hurricane Center advisory for Hurricane Ernesto for more information. Otherwise, a cold front will approach from the W Sun night into Mon, move offshore later Mon into Tue, and then slowly pass E of the waters Tue night. High pressure will build E over New England Wed and Wed night. Gulf of Maine to the Hague Line .TODAY...S to SE winds less than 10 kt. Seas 2 to 5 ft, building to 4 to 7 ft. .TONIGHT...SE winds 5 to 15 kt. Seas 4 to 7 ft. .SUN...SE winds less than 10 kt, becoming E. Seas 4 to 8 ft. Slight chance of showers. .SUN NIGHT...E to NE winds 5 to 15 kt. Seas 5 to 9 ft. Slight chance of showers. .MON...E to NE winds less than 10 kt, becoming S 10 to 20 kt. Seas 6 to 10 ft. .MON NIGHT...S winds 10 to 20 kt, becoming SW. Seas 5 to 8 ft. .TUE...N to NW winds 5 to 15 kt. Seas 4 to 7 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED...N winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to 6 ft. .WED NIGHT...NW winds 5 to 10 kt, becoming N to NW 5 to 15 kt. Seas 3 to 5 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line .TODAY...E to NE winds 5 to 10 kt, becoming E 5 to 15 kt. Seas 3 to 6 ft, building to 5 to 8 ft. .TONIGHT...E winds 5 to 15 kt. Seas 5 to 9 ft. .SUN...E to NE winds 10 to 20 kt. Seas 6 to 10 ft. .SUN NIGHT...E to NE winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas 7 to 12 ft. Chance of showers and tstms with vsby 1 nm or less. .MON...W winds 10 to 20 kt, becoming S to SW 15 to 25 kt. Seas 7 to 12 ft. .MON NIGHT...SW winds 15 to 25 kt. Seas subsiding to 5 to 9 ft. .TUE...SW winds 15 to 25 kt. Seas 5 to 9 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 5 to 8 ft. .WED...N winds 10 to 20 kt, becoming 10 to 15 kt. Seas subsiding to 4 to 6 ft. .WED NIGHT...N to NW winds 5 to 15 kt. Seas 3 to 5 ft. South of New England...from the Great South Channel to Hudson Canyon including the waters south of Marthas Vineyard and Nantucket Island...out to 1000 fm .TODAY...Variable winds 5 to 10 kt, becoming E to SE. Seas 4 to 8 ft. Slight chance of tstms. .TONIGHT...SE winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas 5 to 8 ft. Chance of showers and tstms. .SUN...E to SE winds 5 to 15 kt. Seas 5 to 9 ft. Chance of showers and tstms. .SUN NIGHT...S to SE winds 10 to 20 kt. Seas 6 to 10 ft. Chance of showers and tstms. .MON...S to SW winds 15 to 25 kt. Seas 6 to 8 ft. .MON NIGHT...W to SW winds 15 to 25 kt. Seas 5 to 9 ft. .TUE...N to NW winds 10 to 20 kt. Seas 4 to 8 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 3 to 6 ft. .WED...N winds 10 to 15 kt. Seas 3 to 6 ft. .WED NIGHT...N to NE winds 5 to 15 kt, becoming N 5 to 10 kt. Seas 3 to 4 ft. .Forecaster Mills. Ocean Prediction Center.