Offshore Forecast
Issued by NWS
Issued by NWS
570 FZNT34 KWBC 100907 OFFN32 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 407 AM EST Fri Jan 10 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...Strong, broad low pressure over the Canadian Maritimes will move SE today and tonight as weak high pressure builds E into the area. A surface trough or two associated with the broad low will also move S and SE across the waters. High pressure diminishes over the area tonight, as low pressure emerging off of the Carolinas late tonight and early Sat rapidly intensifies and moves ENE across the waters through Sat night. Mariners planning voyages off of the east coast should monitor forecasts and prepare to execute avoidance with hurricane-force winds expected just SE of the NE waters. The low will move well out into the N Atlantic Sun, with high pressure gradually building E over the waters Sun through early Mon. A low pressure trough should develop over the E waters Mon, gradually shifting E Mon night. Low pressure over the Gulf of Maine Tue will slowly intensify and then shift E and SE Tue night as an accompanying cold front moves S through the N and central waters. Hudson Canyon to Baltimore Canyon including the waters west of 39.3N 71.9W...SW to 37.7N 72.9W ...GALE FORCE WINDS POSSIBLE TUE NIGHT... .TODAY...NW winds 20 to 30 kt, diminishing to 15 to 20 kt. Seas 7 to 12 ft. .TONIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft. Chance of rain and snow, and areas of fog with vsby 1 nm or less. .SAT...W to NW winds 5 to 10 kt, becoming NW 20 to 30 kt. Seas 3 to 6 ft. Periods of rain and snow, and areas of fog with vsby 1 nm or less. .SAT NIGHT...NW winds 20 to 30 kt. Seas 6 to 10 ft. Chance of snow early. .SUN...N winds 15 to 25 kt, becoming NW 10 to 15 kt. Seas 5 to 8 ft. .SUN NIGHT...W winds 5 to 10 kt, becoming 5 to 15 kt. Seas 3 to 5 ft. .MON...W winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...W to NW winds 15 to 25 kt. Seas 4 to 7 ft. .TUE...W winds 20 to 30 kt. Seas 5 to 9 ft. .TUE NIGHT...W to NW winds 25 to 35 kt. Seas 7 to 12 ft. Baltimore Canyon to the Hague Line south of 1000 fm ...STORM WARNING... .TODAY...NW winds 30 to 40 kt. Seas 12 to 21 ft. Isolated showers. .TONIGHT...NW winds 20 to 30 kt, becoming W 10 to 20 kt. Seas 9 to 15 ft. Chance of rain late. .SAT...W winds 5 to 15 kt, becoming N 40 to 50 kt. Seas 7 to 12 ft. Rain, a slight chance of tstms, and areas of fog with vsby 1 nm or less. .SAT NIGHT...N to NW winds 45 to 60 kt, becoming NW 35 to 45 kt. Seas 10 to 17 ft. Rain, then scattered showers. Areas of fog with vsby 1 nm or less. .SUN...NW winds 25 to 35 kt, becoming N to NW 20 to 30 kt. Seas 9 to 16 ft. .SUN NIGHT...N to NW winds 10 to 20 kt, becoming W to NW 5 to 15 kt. Seas 7 to 13 ft. .MON...W winds 15 to 25 kt. Seas 5 to 9 ft. .MON NIGHT...W winds 20 to 30 kt. Seas 6 to 10 ft. .TUE...W winds 20 to 30 kt. Seas 7 to 12 ft. .TUE NIGHT...W winds 25 to 35 kt. Seas 11 to 18 ft. Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W ...GALE WARNING... .TODAY...NW winds 25 to 35 kt, diminishing to 15 to 25 kt. Seas 12 to 20 ft. Isolated showers. .TONIGHT...W to NW winds 10 to 20 kt. Seas 7 to 12 ft. Chance of rain, and a chance of rain and snow W portion. Areas of fog with vsby 1 nm or less. .SAT...S winds 25 to 35 kt, becoming W to NW 30 to 40 kt. Seas 8 to 13 ft. Rain, and rain and snow W portion. Areas of fog with vsby 1 nm or less. .SAT NIGHT...NW winds 30 to 40 kt. Seas 12 to 18 ft. Isolated showers. .SUN...N to NW winds 20 to 30 kt. Seas 10 to 17 ft. .SUN NIGHT...NW winds 5 to 15 kt, becoming W. Seas 6 to 11 ft. .MON...W winds 15 to 25 kt. Seas 5 to 8 ft. .MON NIGHT...W winds 15 to 25 kt. Seas 5 to 9 ft. .TUE...W to NW winds 20 to 30 kt. Seas 7 to 12 ft. .TUE NIGHT...W to NW winds 25 to 35 kt. Seas 10 to 17 ft. Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W ...GALE WARNING... .TODAY...NW winds 20 to 30 kt. Seas 10 to 18 ft. Isolated showers. .TONIGHT...W to NW winds 5 to 15 kt, becoming S 20 to 30 kt. Seas 7 to 12 ft. Rain developing. .SAT...W to SW winds 30 to 40 kt, becoming W to NW. Seas 10 to 17 ft. Rain. Slight chance of tstms. .SAT NIGHT...W to NW winds 30 to 40 kt. Seas 12 to 19 ft. .SUN...N to NW winds 15 to 25 kt, becoming NW 5 to 15 kt. Seas 9 to 16 ft. .SUN NIGHT...NW winds less than 10 kt, becoming W. Seas 6 to 10 ft. .MON...W winds increasing to 15 to 25 kt. Seas 4 to 7 ft. .MON NIGHT...W to NW winds 15 to 25 kt. Seas 5 to 9 ft. .TUE...W to NW winds 15 to 25 kt. Seas 6 to 10 ft. .TUE NIGHT...NW winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 8 to 14 ft. Cape Fear to 31N out to 32N 73W to 31N 74W ...GALE WARNING... .TODAY...N to NW winds 15 to 25 kt, becoming NW 5 to 15 kt. Seas 9 to 16 ft. Isolated showers. .TONIGHT...S winds 25 to 35 kt, becoming SW 30 to 40 kt. Seas 9 to 15 ft. Chance of rain, then periods of rain. .SAT...W to SW winds 30 to 40 kt, becoming W to NW. Seas 12 to 19 ft. Numerous showers and slight chance of tstms. .SAT NIGHT...NW winds 25 to 35 kt, becoming N to NW 15 to 25 kt. Seas 11 to 19 ft. .SUN...N winds 5 to 15 kt, becoming N to NW 5 to 10 kt. Seas 8 to 13 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming W to NW. Seas 5 to 9 ft. .MON...W to NW winds 10 to 20 kt. Seas 4 to 7 ft. .MON NIGHT...W to NW winds 10 to 20 kt. Seas 4 to 8 ft. .TUE...W to NW winds 15 to 25 kt. Seas 5 to 8 ft. .TUE NIGHT...NW winds 20 to 30 kt. Seas 6 to 11 ft. .Forecaster Figurskey. Ocean Prediction Center.