


Offshore Forecast
Issued by NWS
Issued by NWS
004 FZNT34 KWBC 150830 OFFN32 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 430 AM EDT Wed Oct 15 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...Today through Thu, the waters will be between high pressure over the Great Lakes and broad low pressure well out over the N Atlantic centered near 35N. A cold front approaching from the NW will move through the waters from this afternoon through Thu. Thu night, a secondary low should form S of Nova Scotia, deepening late Thu night and Fri. On Fri, the low could be centered as far W as about 65W as the low pivots S, with increasing winds immediately on the W side of the low. Mariners should monitor later forecasts. This second low will slowly move farther E into the N Atlantic Fri night through Sat night as high pressure gradually moves E over the area. High pressure will be over the waters Sun, moving E late Sun and Sun night as a cold front moves into the W waters late Sun night. Hudson Canyon to Baltimore Canyon including the waters west of 39.3N 71.9W...SW to 37.7N 72.9W .TODAY...N winds 15 to 25 kt. Seas 6 to 10 ft. Isolated showers. .TONIGHT...N winds 20 to 30 kt. Seas 6 to 9 ft. .THU...N winds 20 to 30 kt. Seas 5 to 9 ft. .THU NIGHT...N winds 20 to 30 kt. Seas 6 to 10 ft. .FRI...N winds 20 to 30 kt. Seas 6 to 10 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 5 to 9 ft. .SAT...N winds 5 to 15 kt. Seas 5 to 9 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 4 to 7 ft. .SUN...S winds increasing to 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...S winds 15 to 25 kt. Seas 5 to 7 ft. Baltimore Canyon to the Hague Line south of 1000 fm ...GALE WARNING... ...STORM FORCE WINDS POSSIBLE FRI... .TODAY...N winds 25 to 35 kt, diminishing to 15 to 25 kt. Seas 7 to 13 ft. Isolated showers. .TONIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. Scattered showers. .THU...N winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 8 to 12 ft. Scattered showers. .THU NIGHT...N winds 35 to 45 kt. Seas 10 to 17 ft. Scattered showers and tstms. Showers more numerous E portion. .FRI...N winds 40 to 50 kt, diminishing to 35 to 45 kt. Seas 14 to 24 ft. Winds and seas highest E portion. .FRI NIGHT...N winds 35 to 45 kt. Seas 13 to 23 ft. .SAT...N winds 30 to 40 kt, diminishing to 20 to 30 kt. Seas 10 to 17 ft. .SAT NIGHT...N winds 20 to 30 kt. Seas 8 to 14 ft. .SUN...N winds 10 to 20 kt, becoming variable 5 to 15 kt. Seas 6 to 10 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 5 to 8 ft. Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W ...GALE WARNING... .TODAY...N winds 20 to 30 kt. Seas 7 to 13 ft. Scattered showers and chance of tstms. .TONIGHT...N winds 20 to 30 kt. Seas 6 to 11 ft. Scattered showers and chance of tstms. .THU...N winds 20 to 30 kt. Seas 7 to 12 ft. Scattered showers. .THU NIGHT...N winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas 8 to 13 ft. Scattered showers far E portion. .FRI...N winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas 9 to 16 ft. .FRI NIGHT...N winds 20 to 30 kt. Seas 10 to 16 ft. .SAT...N winds 15 to 25 kt. Seas 9 to 16 ft. .SAT NIGHT...N winds 5 to 15 kt. Seas 6 to 11 ft. .SUN...S to SW winds 10 to 20 kt. Seas 5 to 9 ft. .SUN NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 8 ft. Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W .TODAY...N winds 20 to 30 kt. Seas 7 to 13 ft. Scattered showers and chance of tstms. .TONIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. Scattered showers and chance of tstms. .THU...N winds 20 to 30 kt. Seas 7 to 12 ft. Scattered showers. .THU NIGHT...N winds 20 to 30 kt. Seas 8 to 13 ft. .FRI...N winds 20 to 30 kt. Seas 8 to 14 ft. .FRI NIGHT...N to NW winds 20 to 30 kt. Seas 9 to 14 ft. .SAT...N winds 10 to 20 kt. Seas 8 to 14 ft. .SAT NIGHT...N winds 5 to 15 kt, becoming variable. Seas 6 to 11 ft. .SUN...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas 5 to 9 ft. .SUN NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 9 ft. Cape Fear to 31N out to 32N 73W to 31N 74W .TODAY...N winds 15 to 25 kt. Seas 7 to 12 ft. Scattered showers. Chance of tstms. .TONIGHT...N winds 15 to 25 kt. Seas 6 to 11 ft. Scattered showers and chance of tstms. .THU...N winds 15 to 25 kt. Seas 6 to 11 ft. Scattered showers. .THU NIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. .FRI...N winds 15 to 25 kt. Seas 7 to 11 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 7 to 11 ft. .SAT...N to NE winds 5 to 15 kt. Seas 7 to 11 ft. .SAT NIGHT...Variable winds less than 10 kt, increasing to 5 to 15 kt. Seas 6 to 11 ft. .SUN...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas 5 to 9 ft. .SUN NIGHT...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 5 to 9 ft. .Forecaster Figurskey. Ocean Prediction Center.