


Offshore Forecast
Issued by NWS
Issued by NWS
259 FZNT34 KWBC 220849 OFFN32 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 449 AM EDT Fri Aug 22 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...The Hurricane Erin will track along but just S of the central waters this morning then move away from the waters later today and tonight. Significant S to SE swell will continue through tonight while gradually backing to the E. A high pressure area will build over the waters tonight into Sat night while a stationary front forms over the far S waters. Weak low pressure will form along the front off the South Carolina coast Sat night, then lift NE and begin to strengthen some while passing through the central and N waters Sun into early Mon while the area of high pressure to the N shifts E of the region. A cold front will approach the area from the W late Sun night, then move E across the area Mon and Mon night while the developing low passes N and NE of the area. Another cold front will move over the region Tue and Tue night. For more information on Hurricane Erin, please closely monitor the latest forecasts from the National Hurricane Center. Hudson Canyon to Baltimore Canyon including the waters west of 39.3N 71.9W...SW to 37.7N 72.9W .TODAY...N winds 20 to 30 kt, becoming N to NE 10 to 20 kt. Seas 13 to 22 ft. Chance of showers. .TONIGHT...E to NE winds 5 to 15 kt, becoming W to SW. Seas 8 to 14 ft. .SAT...N to NE winds less than 10 kt, becoming S to SE. Seas 5 to 9 ft. .SAT NIGHT...S to SE winds 10 to 15 kt. Seas 4 to 8 ft. .SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 3 to 6 ft. .MON...Variable winds less than 5 kt, becoming W to SW. Seas 3 to 5 ft. .MON NIGHT...W winds 5 to 15 kt, becoming NW 10 to 20 kt. Seas 3 to 4 ft. .TUE...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds 10 to 20 kt, becoming NW 10 to 15 kt. Seas 3 to 5 ft. Baltimore Canyon to the Hague Line south of 1000 fm ...HURRICANE WARNING... .TODAY...N to NE winds 50 to 70 kt, becoming N to NW 35 to 45 kt. Seas 29 to 44 ft. Showers and tstms. .TONIGHT...N to NE winds 20 to 30 kt. Seas 16 to 31 ft. .SAT...N to NE winds 10 to 20 kt, becoming E 5 to 15 kt. Seas 9 to 16 ft. .SAT NIGHT...S to SE winds 5 to 15 kt. Seas 7 to 11 ft. .SUN...S to SE winds 5 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...S winds 15 to 25 kt. Seas 4 to 7 ft. .MON...S to SE winds 15 to 25 kt. Seas 4 to 7 ft. .MON NIGHT...S to SW winds 15 to 25 kt, becoming W 10 to 20 kt. Seas 4 to 7 ft. .TUE...W winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to 7 ft. .TUE NIGHT...W winds 10 to 20 kt. Seas 4 to 6 ft. Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W .TODAY...N winds 20 to 30 kt. Seas 15 to 28 ft, subsiding to 13 to 20 ft. Chance of showers and tstms. .TONIGHT...N to NE winds 10 to 20 kt, becoming E to NE 5 to 15 kt. Seas 10 to 17 ft. .SAT...E to NE winds 5 to 15 kt. Seas 7 to 12 ft. .SAT NIGHT...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. .SUN NIGHT...SE winds 10 to 20 kt, becoming S 15 to 25 kt. Seas 4 to 8 ft. .MON...W to SW winds 10 to 20 kt. Seas 4 to 7 ft. .MON NIGHT...W to NW winds 5 to 15 kt. Seas 3 to 6 ft. .TUE...W to NW winds 5 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...W to NW winds 5 to 15 kt. Seas 3 to 5 ft. Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W .TODAY...N to NW winds 15 to 25 kt. Seas 12 to 20 ft. Chance of showers and tstms. .TONIGHT...N to NE winds 10 to 15 kt, becoming E to NE 5 to 10 kt. Seas 8 to 14 ft. Chance of showers and tstms. .SAT...E winds 5 to 15 kt. Seas 6 to 11 ft. Scattered showers and tstms. .SAT NIGHT...E winds 10 to 15 kt, becoming SE 5 to 15 kt. Seas 5 to 9 ft. Scattered showers and tstms. .SUN...SE winds 5 to 15 kt. Seas 4 to 8 ft. .SUN NIGHT...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 5 to 8 ft. .MON...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W to NW winds 5 to 15 kt. Seas 4 to 7 ft. .TUE...W to NW winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...W to NW winds less than 10 kt, becoming variable. Seas 3 to 4 ft. Cape Fear to 31N out to 32N 73W to 31N 74W .TODAY...N to NW winds 10 to 20 kt, becoming N to NE 5 to 15 kt, then, becoming E to NE. Seas 8 to 14 ft. Scattered showers and tstms. .TONIGHT...E to NE winds 5 to 15 kt. Seas 7 to 12 ft. Scattered showers and tstms. .SAT...E winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 6 to 10 ft. Scattered showers and tstms. .SAT NIGHT...E to SE winds 10 to 20 kt, becoming SE 5 to 15 kt. Seas 5 to 9 ft. Scattered showers and tstms. .SUN...S to SE winds 5 to 15 kt, becoming SW. Seas 5 to 8 ft. .SUN NIGHT...W to SW winds 15 to 25 kt. Seas 5 to 8 ft. .MON...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W to SW winds 5 to 15 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 5 ft. .Forecaster Byrd. Ocean Prediction Center.