


Offshore Forecast
Issued by NWS
Issued by NWS
257 FZNT33 KWBC 190820 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 320 AM EST Wed Feb 19 2025 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...A series of low pressure troughs or secondary cold fronts will move across the waters today as high pressure builds E towards the coast. The high will settle offshore late today and tonight, then shift E of the region Thu while weakening. An intensifying low pressure system will track NE and pass just S of the waters Thu, then will accelerate well E of the area Thu night through Fri night while pulling another series of low pressure troughs or cold fronts across the waters. High pressure will build E to the mid- Atlantic coast Sat, and will pass well S and SE of the area Sat night through Sun night. A weak cold front will move E across the waters Sun into Sun night. Gulf of Maine to the Hague Line .TODAY...W to NW winds 20 to 30 kt, becoming W 10 to 20 kt. Seas 8 to 13 ft. Light freezing spray. .TONIGHT...W winds 10 to 20 kt, becoming W to NW 5 to 15 kt. Seas 4 to 7 ft. Light freezing spray. .THU...N winds 5 to 15 kt, becoming NE. Seas 3 to 4 ft. Light freezing spray. .THU NIGHT...N winds 20 to 30 kt. Seas 5 to 8 ft. Chance of snow. .FRI...NW winds 20 to 30 kt. Seas 6 to 10 ft. .FRI NIGHT...NW winds 20 to 30 kt. Seas 6 to 10 ft. .SAT...NW winds 10 to 20 kt, becoming W to NW 5 to 15 kt. Seas 4 to 8 ft. .SAT NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...W winds 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 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 ...GALE WARNING... .TODAY...W winds 30 to 35 kt, diminishing to 20 to 30 kt. Seas 10 to 16 ft. Light freezing spray. .TONIGHT...W winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 5 to 9 ft. .THU...E to NE winds 10 to 20 kt, becoming NE 20 to 30 kt. Seas 3 to 6 ft. Chance of snow with vsby 1 nm or less. .THU NIGHT...N winds 25 to 35 kt, becoming NW 25 to 30 kt. Seas 7 to 12 ft. Chance of snow with vsby 1 nm or less. .FRI...NW winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas 7 to 13 ft. .FRI NIGHT...NW winds 20 to 30 kt. Seas 7 to 12 ft. .SAT...NW winds 10 to 20 kt, becoming W. Seas 5 to 9 ft. .SAT NIGHT...W winds 10 to 20 kt. Seas 4 to 7 ft. .SUN...W winds 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...W winds 10 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...W winds 20 to 30 kt. Seas 8 to 13 ft. Light freezing spray. .TONIGHT...W to NW winds 10 to 20 kt, becoming N to NW 5 to 15 kt. Seas 5 to 8 ft. Light freezing spray. .THU...N to NE winds 15 to 25 kt. Seas 3 to 6 ft. Light freezing spray and chance of snow with vsby 1 nm or less. .THU NIGHT...NW winds 20 to 30 kt. Seas 6 to 11 ft. Chance of snow with vsby 1 nm or less. .FRI...NW winds 20 to 30 kt. Seas 7 to 12 ft. .FRI NIGHT...NW winds 20 to 30 kt. Seas 6 to 11 ft. .SAT...NW winds 10 to 20 kt, becoming W 5 to 15 kt. Seas 5 to 9 ft. .SAT NIGHT...W winds 15 to 20 kt. Seas 3 to 6 ft. .SUN...W winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 3 to 4 ft. .Forecaster Huffman. Ocean Prediction Center.