National Weather Service Marine Forecast FZNT21 KWBC

FZNT21 KWBC 170829
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
329 AM EST Sat Jan 17 2026

New England continental shelf and slope waters from 25 nm offshore to the Hague Line, except to 1000 fm south of New England.

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.

ANZ898-171945
329 AM EST Sat Jan 17 2026

SYNOPSIS FOR NEW ENGLAND WATERS
A warm front will develop and approach from the S this morning and lift N over the area later today into tonight with a cold front moving E and SE into the area later tonight into early Sun. The front will stall just E and SE of the area during Sun as intensifying low pressure tracks NE along the front and passes just SE and then E of the area Sun night. A weak high pressure ridge moves in across the area Mon, followed by a strong cold front that will reach the coast late Mon, and then cross the waters Mon night. Surface troughs will move SE across the area Tue into Tue night with an area of high pressure building in from the W later Tue night into Wed. The high will then slide off to the SE of the waters late Wed and Wed night as a warm front develops and lifts N over the area.


ANZ800-171945
Gulf of Maine to the Hague Line
329 AM EST Sat Jan 17 2026

GALE FORCE WINDS POSSIBLE MON NIGHT

TODAY
SW winds 5 to 15 kt, becoming S to SW 15 to 25 kt. Seas 5 to 9 ft. Slight chance of snow early, then rain likely.

TONIGHT
W to SW winds 15 to 25 kt. Seas 4 to 8 ft. Chance of rain.

SUN
W to SW winds 15 to 25 kt. Seas 4 to 7 ft. Chance of rain and snow.

SUN NIGHT
N winds 10 to 20 kt, becoming NW. Seas 3 to 6 ft. Chance of snow or rain early, then snow.

MON
W to SW winds 20 to 30 kt. Seas 6 to 11 ft.

MON NIGHT and TUE
W winds 25 to 35 kt. Seas 7 to 12 ft.

TUE NIGHT
W winds 20 to 30 kt. Seas 4 to 8 ft.

WED
W winds 20 to 25 kt, becoming SW. Seas 4 to 8 ft.

WED NIGHT
SW winds 20 to 30 kt. Seas 5 to 9 ft.


ANZ805-171945
Georges Bank between Cape Cod and 68W north of 1000 FM
329 AM EST Sat Jan 17 2026

GALE FORCE WINDS POSSIBLE MON

TODAY
S to SW winds 15 to 25 kt. Seas 5 to 9 ft.

TONIGHT
W to SW winds 20 to 30 kt, becoming W 10 to 20 kt. Seas 5 to 9 ft. Scattered showers.

SUN
W to SW winds 5 to 15 kt, becoming N 10 to 20 kt. Seas 4 to 8 ft. Rain and snow.

SUN NIGHT
N to NE winds 15 to 25 kt, becoming N to NW. Seas 4 to 8 ft. Chance of rain and snow early, then snow.

MON
W winds 20 to 25 kt, increasing to 25 to 35 kt. Seas 6 to 11 ft.

MON NIGHT and TUE
W winds 25 to 35 kt. Seas 7 to 12 ft.

TUE NIGHT
W to NW winds 15 to 25 kt. Seas 5 to 8 ft.

WED
W winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 4 to 7 ft.

WED NIGHT
SW winds 15 to 25 kt. Seas 5 to 8 ft.


ANZ900-171945
Georges Bank between 68W and the Hague Line
329 AM EST Sat Jan 17 2026

GALE FORCE WINDS POSSIBLE MON

TODAY
W to SW winds 15 to 20 kt, becoming S to SW 10 to 20 kt early, then, increasing to 20 to 30 kt. Seas 7 to 12 ft. Scattered showers.

TONIGHT
SW winds 20 to 30 kt, becoming W 10 to 20 kt. Seas 7 to 10 ft. Scattered showers, then chance of rain.

SUN
W to SW winds 5 to 15 kt, becoming N 10 to 20 kt. Seas 6 to 8 ft. Chance of rain.

SUN NIGHT
NE winds 20 to 30 kt, becoming N to NW. Seas 5 to 9 ft. Snow and chance of rain.

MON
W winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 6 to 11 ft.

MON NIGHT
W winds 25 to 35 kt. Seas 10 to 12 ft.

TUE
W winds 25 to 35 kt. Seas 7 to 12 ft.

TUE NIGHT
W winds 20 to 25 kt. Seas 7 to 8 ft.

WED
W to SW winds 10 to 20 kt. Seas 6 to 8 ft.

WED NIGHT
SW winds 15 to 25 kt. Seas 5 to 8 ft.


ANZ810-171945
South of New England between the Great South Channel and Montauk Point to 1000 FM
329 AM EST Sat Jan 17 2026

TODAY
S to SW winds 15 to 25 kt. Seas 5 to 8 ft.

TONIGHT
W winds 15 to 25 kt, diminishing to 5 to 15 kt. Seas 6 to 9 ft. Chance of rain and snow.

SUN
Variable winds 5 to 15 kt, becoming N to NE 10 to 20 kt. Seas 4 to 8 ft. Rain and snow.

SUN NIGHT
N winds 10 to 20 kt, becoming W to NW 15 to 25 kt. Seas 4 to 7 ft. Snow and chance of rain.

MON
W winds 20 to 30 kt. Seas 6 to 10 ft.

MON NIGHT
W winds 20 to 30 kt. Seas 8 to 10 ft.

TUE
W winds 20 to 30 kt. Seas 6 to 9 ft.

TUE NIGHT
W to NW winds 20 to 30 kt. Seas 5 to 8 ft.

WED
W to SW winds 15 to 25 kt. Seas 4 to 7 ft.

WED NIGHT
SW winds 20 to 30 kt. Seas 5 to 9 ft.


ANZ815-171945
South of Long Island between Montauk Point and Sandy Hook to 1000 FM
329 AM EST Sat Jan 17 2026

TODAY
S to SW winds 15 to 25 kt. Seas 4 to 8 ft. Slight chance of snow early, then chance of rain.

TONIGHT
W winds 10 to 20 kt, diminishing to less than 10 kt. Seas 4 to 8 ft. Chance of snow or rain.

SUN
W to NW winds 5 to 15 kt, becoming N. Seas 4 to 7 ft. Rain or snow.

SUN NIGHT
N to NW winds 15 to 25 kt, becoming W. Seas 4 to 7 ft. Chance of snow and rain.

MON
W winds 20 to 30 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 5 to 9 ft.

TUE NIGHT
W to NW winds 20 to 30 kt. Seas 4 to 8 ft.

WED
W winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 4 to 7 ft.

WED NIGHT
S to SW winds 20 to 30 kt. Seas 5 to 9 ft.


.Forecaster Mills. Ocean Prediction Center.