


Offshore Forecast
Issued by NWS
Issued by NWS
176 FZNT34 KWBC 200915 OFFN32 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 515 AM EDT Sun Apr 20 2025 West central North Atlantic continental shelf and slope waters beyond 20 nm to 250 nm offshore, including south of Georges Bank from 1000 fm to 250 nm offshore. 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 MID ATLC WATERS...High pressure just E of the southern waters will maintain a ridge across the S waters. The high will then move back to the W over the S waters later today into early tonight, slowly weaken to a ridge later tonight and Mon, then continue through Wed night. A cold front will move SE over the waters today into tonight, stall across the central waters Mon, then lift N as a warm front Mon night into Tue. Another high will build SE over the N waters Mon, and then shift E of the region Mon night and Tue. Another cold front will move SE over the N and central waters Tue into Tue night, then stall across the central waters Wed through Thu night while gradually weakening. Yet another high will build N and NE of the region Thu and Thu night. Hudson Canyon to Baltimore Canyon including the waters west of 39.3N 71.9W...SW to 37.7N 72.9W .TODAY...W winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas 5 to 8 ft. .TONIGHT...E to SE winds less than 10 kt. Seas 3 to 4 ft. .MON...E to SE winds 5 to 10 kt, becoming SE 10 to 15 kt. Seas 2 ft or less, becoming 3 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Chance of rain. .TUE...SW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SW winds 10 to 15 kt, becoming N 5 to 15 kt. Seas 3 to 4 ft. .WED...N to NE winds 5 to 15 kt, diminishing to less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...S to SE winds less than 10 kt, becoming variable. Seas 3 to 4 ft. .THU...Variable winds less than 5 kt, becoming E. Seas 3 to 4 ft. .THU NIGHT...S to SE winds 5 to 10 kt. Seas 3 to 4 ft. Baltimore Canyon to the Hague Line south of 1000 fm .TODAY...W to SW winds 20 to 30 kt, becoming N to NW. Seas 7 to 12 ft. .TONIGHT...NW winds 25 to 30 kt, becoming N 20 to 30 kt. Seas 8 to 13 ft. .MON...N to NW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 6 to 10 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 3 to 6 ft. Chance of rain. .TUE...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. .TUE NIGHT...SW winds 15 to 25 kt. Seas 4 to 7 ft. .WED...W to NW winds 5 to 15 kt. Seas 4 to 7 ft. .WED NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. .THU...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...N to NE winds 5 to 15 kt, becoming E to NE. Seas 3 to 5 ft. Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W .TODAY...W to SW winds 15 to 25 kt, becoming N to NE 10 to 20 kt. Seas 5 to 9 ft. .TONIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. .MON...E winds 5 to 15 kt, becoming SE. Seas 3 to 5 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Chance of rain. .TUE...S to SW winds 15 to 25 kt. Seas 3 to 6 ft. .TUE NIGHT...SW winds 10 to 20 kt. Seas 3 to 6 ft. .WED...SW winds 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. .THU...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 5 to 15 kt. Seas 3 to 5 ft. Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W .TODAY...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. .TONIGHT...E to NE winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to 5 ft. .MON...E to SE winds 5 to 15 kt. Seas 3 to 5 ft. Chance of rain. .MON NIGHT...S to SE winds 10 to 20 kt, becoming S to SW. Seas 3 to 5 ft. Chance of rain. .TUE...SW winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...S to SW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to 4 ft. .WED...SW winds 5 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...Variable winds 5 to 15 kt. Seas 3 to 5 ft. .THU...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E to SE winds 5 to 15 kt. Seas 3 to 5 ft. Cape Fear to 31N out to 32N 73W to 31N 74W .TODAY...S to SW winds 10 to 20 kt, diminishing to 5 to 15 kt, then, becoming W to SW. Seas 3 to 5 ft. .TONIGHT...S to SE winds 5 to 15 kt. Seas 3 to 5 ft. .MON...Variable winds 5 to 15 kt. Seas 3 to 4 ft. Chance of rain. .MON NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Chance of rain. .TUE...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. .WED...S to SW winds less than 10 kt, becoming S to SE. Seas 3 to 4 ft. .WED NIGHT...SE winds 5 to 15 kt. Seas 3 to 4 ft. .THU...E to SE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E to SE winds 5 to 15 kt. Seas 3 to 4 ft. .Forecaster Bancroft. Ocean Prediction Center.