FZNT33 KWBC 190904

OFFN31



Marine Weather HF Voice Broadcast

NWS Ocean Prediction Center Washington DC

504 AM EDT Tue Aug 19 2025



New England continental shelf and slope waters from 25 nm

offshore to the Hague Line, except to 1000 fm south of New

England.



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 NEW ENGLAND WATERS...High pressure over the region

today will gradually shift E of the area tonight through Wed

night. The eye of Hurricane Erin is expected to pass NE through

the Outer Mid- Atlantic Waters Thu night into Fri, remaining S of

the waters, then move farther away from the area Fri night into

Sat. Tropical storm conditions are expected over nearly all of

the waters S of the Gulf of Maine. Long period S swell from

Hurricane Erin will move into the region today, then continue

through Thu night before backing to the SE and E Fri night. A

high pressure ridge will move E across the waters Fri night and

Sat, then shift E of the area Sat night. For more information on

Hurricane Erin, please closely monitor the latest forecasts from

the National Hurricane Center. 



Gulf of Maine to the Hague Line



.TODAY...E winds less than 10 kt. Seas 3 to 4 ft. 

.TONIGHT...S to SE winds less than 10 kt. Seas 3 to 5 ft. 

.WED...S to SE winds less than 10 kt. Seas 3 to 6 ft. 

.WED NIGHT...E to SE winds less than 10 kt. Seas 4 to 7 ft. 

.THU...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 7 to

11 ft. 

.THU NIGHT...E to NE winds 20 to 30 kt. Seas 9 to 16 ft. 

.FRI...NE winds 20 to 30 kt. Seas 11 to 19 ft. 

.FRI NIGHT...NE winds 10 to 20 kt, becoming N 5 to 15 kt. Seas

10 to 17 ft. 

.SAT...N to NE winds 5 to 15 kt, becoming S to SE. Seas 6 to

11 ft. 

.SAT NIGHT...S to SW winds 10 to 20 kt. Seas 5 to 9 ft. 



Georges Bank...from the Northeast Channel to the Great South

Channel including waters east of Cape Cod...to the Hague Line



...TROPICAL STORM CONDITIONS POSSIBLE THU NIGHT...



.TODAY...NE winds 5 to 15 kt, becoming E to NE 5 to 10 kt. Seas

4 to 7 ft. 

.TONIGHT...E winds 5 to 15 kt, becoming E to SE 5 to 10 kt. Seas

4 to 7 ft. 

.WED...E winds 5 to 15 kt. Seas 5 to 9 ft. 

.WED NIGHT...E winds 10 to 20 kt. Seas 7 to 12 ft.

.THU...E winds 20 to 30 kt. Seas 13 to 21 ft. 

.THU NIGHT...E to NE winds 30 to 40 kt. Seas 16 to 28 ft. 

.FRI...Tropical storm conditions possible. 

.FRI NIGHT...Tropical storm conditions possible. 

.SAT...N winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas

9 to 16 ft. 

.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 6 to 11 ft. 



South of New England...from the Great South Channel to Hudson

Canyon including the waters south of Marthas Vineyard and

Nantucket Island...out to 1000 fm



...TROPICAL STORM CONDITIONS POSSIBLE THU...



.TODAY...E winds 10 to 15 kt, becoming 10 to 20 kt, then,

becoming 10 to 15 kt. Seas 4 to 8 ft. 

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 8 ft. 

.WED...E winds 10 to 15 kt, becoming 10 to 20 kt. Seas 6 to

10 ft. Chance of showers. 

.WED NIGHT...E winds 15 to 25 kt. Seas 8 to 14 ft. Chance of

showers. 

.THU...E winds 20 to 30 kt, becoming NE 25 to 35 kt. Seas 15 to

24 ft. 

.THU NIGHT...NE winds 30 to 40 kt. Seas 13 to 28 ft. 

.FRI...Tropical storm conditions possible. 

.FRI NIGHT...N to NE winds 20 to 30 kt, becoming N 10 to 20 kt.

Seas 12 to 20 ft. 

.SAT...N to NE winds 10 to 20 kt, becoming S to SE 5 to 15 kt.

Seas 8 to 14 ft. 

.SAT NIGHT...S winds 5 to 15 kt. Seas 6 to 10 ft. 



.Forecaster Connelly. Ocean Prediction Center.