647 
FZNT34 KWBC 170840
OFFN32

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
440 AM EDT Wed Sep 17 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...Low pressure located over
southern Chesapeake Bay early this morning will remain in the
same general area for most of today, and then move NE tonight
into Thu moving across the far N waters before passing E and NE
of the region later Thu into Thu night. A weak trailing cold
front will cross the outer portions of the waters today into
tonight, and then gradually pass E of the area by late Thu.
Otherwise, weak high pressure will cover most of the S waters
today into Thu, with the high expanding N over the remainder of
the area Thu night into Fri ahead of the next cold front. The
front will move SE over the N waters Fri night, and reach the
central and S waters Sat. High pressure will build over the N
waters behind the front Sat and Sat night, then persist into Sun,
while the front becomes stationary near or just S of the S
waters. The high will shift off to the NE of the region Sun night
as the front begins to lift N over the S waters as a warm front. 

Hudson Canyon to Baltimore Canyon including the waters west of
39.3N 71.9W...SW to 37.7N 72.9W

.TODAY...E winds 20 to 30 kt. Seas 6 to 11 ft. Showers and
scattered tstms. 
.TONIGHT...E winds diminishing to 10 to 20 kt, becoming W to SW 
less than 10 kt. Seas subsiding to 4 to 7 ft. Chance of showers 
and tstms.
.THU...NW winds 5 to 10 kt. Seas subsiding to 3 to 4 ft. Chance 
of showers and tstms. 
.THU NIGHT...W to SW winds 5 to 10 kt, becoming W 10 to 15 kt.
Seas 3 to 4 ft. 
.FRI...W winds 5 to 15 kt, becoming W to SW 5 to 10 kt. Seas
3 to 4 ft. 
.FRI NIGHT...N to NW winds 5 to 15 kt, becoming N to NE 10 to
20 kt. Seas 3 to 4 ft. 
.SAT...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 6 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.SUN NIGHT...E winds 10 to 20 kt, becoming E to SE 5 to 15 kt.
Seas 4 to 7 ft. 

Baltimore Canyon to the Hague Line south of 1000 fm

.TODAY...E to SE winds 15 to 25 kt. Seas 4 to 8 ft. Showers and
scattered tstms. 
.TONIGHT...SE winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas
4 to 6 ft. Scattered showers and tstms. 
.THU...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. Scattered
showers and tstms with vsby 1 nm or less. 
.THU NIGHT...W to SW winds 15 to 25 kt, becoming W to NW. Seas
4 to 7 ft. Scattered showers and chance of tstms. 
.FRI...W to NW winds 10 to 20 kt, becoming W 5 to 15 kt. Seas
3 to 6 ft. 
.FRI NIGHT...W to NW winds 10 to 20 kt, becoming N to NW 5 to
15 kt. Seas 3 to 5 ft. 
.SAT...N to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SAT NIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.SUN NIGHT...E winds 10 to 20 kt, becoming E to SE 5 to 15 kt.
Seas 4 to 7 ft. 

Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W

.TODAY...SW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
6 to 11 ft. Scattered showers and tstms. 
.TONIGHT...SW winds 5 to 15 kt, becoming W to SW 15 to 25 kt.
Seas subsiding to 3 to 6 ft. Chance of showers and tstms. 
.THU...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. Chance of
showers and tstms. 
.THU NIGHT...W winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 6 ft. Scattered showers and tstms.
.FRI...W to NW winds 5 to 15 kt, becoming W to SW. Seas 3 to
4 ft. 
.FRI NIGHT...W to SW winds less than 10 kt, becoming variable.
Seas 3 to 4 ft. 
.SAT...E to NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 6 ft. 
.SUN...E winds 15 to 25 kt. Seas building to 5 to 9 ft. 
.SUN NIGHT...E winds 15 to 25 kt. Seas 5 to 9 ft. 

Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W

.TODAY...W winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
5 to 8 ft. Chance of showers and tstms. 
.TONIGHT...W to SW winds 5 to 15 kt, increasing to 15 to 25 kt.
Seas subsiding to 3 to 6 ft. Chance of showers and tstms. 
.THU...W winds 10 to 20 kt. Seas 3 to 6 ft. Scattered showers
and isolated tstms. 
.THU NIGHT...W winds 5 to 15 kt, becoming W to NW. Seas 3 to
4 ft. Scattered showers and tstms. 
.FRI...N to NW winds less than 10 kt, becoming variable. Seas
2 to 4 ft. 
.FRI NIGHT...Variable winds less than 10 kt, becoming E to NE.
Seas 2 to 4 ft. 
.SAT...E to NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 6 ft. 
.SUN...E winds 15 to 25 kt. Seas 4 to 8 ft. 
.SUN NIGHT...E winds 15 to 25 kt. Seas 5 to 9 ft. 

Cape Fear to 31N out to 32N 73W to 31N 74W

.TODAY...W winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
3 to 5 ft. 
.TONIGHT...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.THU...W winds 5 to 15 kt, becoming variable. Seas 3 to 4 ft.
Chance of showers and tstms. 
.THU NIGHT...E to SE winds 5 to 15 kt, becoming variable. Seas
3 to 4 ft. Scattered showers and tstms. 
.FRI...E to NE winds 5 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SAT NIGHT...E winds 15 to 25 kt. Seas 4 to 7 ft. 
.SUN...E winds 15 to 25 kt. Seas 5 to 7 ft. 
.SUN NIGHT...E to NE winds 10 to 20 kt. Seas 5 to 7 ft. 

.Forecaster Mills. Ocean Prediction Center.