


Offshore Forecast
Issued by NWS
Issued by NWS
818 FZNT34 KWBC 231451 OFFN32 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 1051 AM EDT Sat Aug 23 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 will build over the waters today and tonight, while a stationary front persists across the far S waters. Weak low pressure will form along the front off the South Carolina coast tonight, then lift NE across the central and N portions Sun and Sun night. A cold front will slowly approach from the NW Sun night into Mon, gradually push across the waters Mon night into Tue night, then stall across the outer and S portions Wed and Wed night. High pressure will build SE across the waters behind the front Tue through Wed night. Hudson Canyon to Baltimore Canyon including the waters west of 39.3N 71.9W...SW to 37.7N 72.9W .TODAY...Variable winds less than 10 kt, becoming SE. Seas 4 to 8 ft. .TONIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 4 to 7 ft. .SUN...S winds 5 to 10 kt. Seas 3 to 6 ft. Scattered tstms and isolated showers. .SUN NIGHT...S winds 5 to 15 kt, becoming variable. Seas 3 to 6 ft. Scattered showers and tstms. .MON...Variable winds 5 to 10 kt, becoming W to SW. Seas 3 to 5 ft. .MON NIGHT...W to SW winds 5 to 15 kt, becoming NW 10 to 15 kt. Seas 3 to 4 ft. .TUE...NW winds 10 to 15 kt, becoming W 5 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...W winds 5 to 15 kt, becoming NW 10 to 15 kt. Seas 3 to 4 ft. .WED...W to NW winds 5 to 10 kt. Seas 3 to 4 ft. .WED NIGHT...W winds 5 to 10 kt, becoming NW. Seas 3 to 4 ft. Baltimore Canyon to the Hague Line south of 1000 fm .TODAY...E to NE winds 5 to 15 kt. Seas 7 to 13 ft. .TONIGHT...SE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 6 to 10 ft. .SUN...S to SE winds 5 to 15 kt. Seas 5 to 8 ft. Isolated showers. .SUN NIGHT...S to SE winds 15 to 25 kt. Seas 4 to 7 ft. Scattered showers and tstms. .MON...S to SW winds 15 to 25 kt. Seas 5 to 9 ft. .MON NIGHT...S to SW winds 10 to 20 kt, becoming W to NW 5 to 15 kt. Seas 4 to 8 ft. .TUE...W to NW winds 5 to 10 kt, becoming W 5 to 15 kt. Seas 3 to 6 ft. .TUE NIGHT...W to NW winds 5 to 15 kt. Seas 3 to 6 ft. .WED...W to NW winds 5 to 10 kt. Seas 3 to 5 ft. .WED NIGHT...N to NW winds 5 to 10 kt. Seas 3 to 4 ft. Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W .TODAY...E winds 5 to 10 kt. Seas 6 to 10 ft. .TONIGHT...S to SE winds 5 to 15 kt. Seas 6 to 10 ft. .SUN...SE winds 5 to 15 kt. Seas 4 to 8 ft. Scattered showers and tstms. .SUN NIGHT...S winds 10 to 20 kt, becoming SW. Seas 4 to 8 ft. Scattered showers and tstms. .MON...W to SW winds 10 to 20 kt. Seas 4 to 8 ft. .MON NIGHT...W to NW winds 5 to 15 kt. Seas 4 to 7 ft. .TUE...N to NW winds 5 to 10 kt, becoming W to NW. Seas 3 to 5 ft. .TUE NIGHT...N to NW winds less than 10 kt. Seas 3 to 4 ft. .WED...N to NE winds less than 10 kt, increasing to 5 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W .TODAY...E winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 6 to 10 ft. Scattered showers and tstms. .TONIGHT...E to SE winds 5 to 15 kt. Seas 5 to 9 ft. Scattered showers and tstms. .SUN...S to SE winds 5 to 15 kt, becoming S to SW 10 to 20 kt. Seas 4 to 8 ft. Scattered showers and tstms. .SUN NIGHT...SW winds 10 to 20 kt. Seas 5 to 8 ft. Scattered showers and tstms. .MON...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W winds 5 to 15 kt, becoming 5 to 10 kt. Seas 4 to 7 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...Variable winds less than 10 kt, increasing to 5 to 15 kt. Seas 3 to 4 ft. .WED...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds 5 to 15 kt. Seas 3 to 6 ft. Cape Fear to 31N out to 32N 73W to 31N 74W .TODAY...E winds 5 to 15 kt. Seas 6 to 10 ft. Scattered showers and tstms. .TONIGHT...E to SE winds 5 to 15 kt, becoming S. Seas 5 to 8 ft. Scattered showers and tstms. .SUN...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas 5 to 8 ft. Scattered showers and tstms. .SUN NIGHT...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. Scattered showers and tstms. .MON...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W winds 5 to 15 kt, becoming 5 to 10 kt. Seas 4 to 7 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .WED...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds 5 to 15 kt. Seas 3 to 5 ft. .Forecaster Collins. Ocean Prediction Center.