High Frequency Voice Broadcast (Mid Atlantic)

FZNT34 KWBC 182119
OFFN32

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
519 PM EDT Thu Sep 18 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...Weak high pressure will dominate
most of the S waters tonight as a weak cold front crosses the
outer waters early tonight. Another cold front will approach from
the NW Fri, move SE over the N and central waters Fri night  into
Sat, and reach the S waters Sat night. The front will then likely
stall and extend E from near Cape Lookout early Sun, slowly lift
N over the central waters as a warm front Sun into Mon, and then
stall across the central waters later Mon into Tue night as high
pressure builds S over the N and central waters. Tropical Storm
Gabrielle will likely pass well E of the waters as a hurricane
Mon and Mon night. For more information on Gabrielle please see
the latest advisory from the National Hurricane Center. Long
period easterly swells generated by Gabrielle could begin to
impact portions of the waters by Mon or Mon night.  

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

.TONIGHT...W to NW winds less than 5 kt, becoming W to SW, then,
becoming W 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...W to SW winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...SW winds less than 10 kt, becoming NE 10 to 20 kt.
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 20 kt, diminishing to 10 to 15 kt. Seas
4 to 6 ft. 
.SUN NIGHT...E winds 10 to 15 kt, becoming NE 5 to 10 kt. Seas
4 to 6 ft. 
.MON...NE winds less than 10 kt, becoming variable. Seas 4 to
6 ft. 
.MON NIGHT...S winds 5 to 15 kt, becoming SW 10 to 15 kt. Seas
4 to 5 ft. 
.TUE...SW winds 10 to 15 kt, becoming S to SW 10 to 20 kt. Seas
4 to 5 ft. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. 

Baltimore Canyon to the Hague Line south of 1000 fm

.TONIGHT...W winds 15 to 25 kt. Seas 4 to 7 ft. Scattered
showers and chance of tstms. 
.FRI...W winds 10 to 20 kt. Seas 3 to 6 ft. Chance of showers
and tstms. 
.FRI NIGHT...W to NW winds 10 to 20 kt, becoming N to NW. Seas
3 to 6 ft. 
.SAT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SAT NIGHT...E to NE winds 15 to 25 kt. Seas 4 to 8 ft. 
.SUN...E winds 20 to 30 kt. Seas 6 to 10 ft. 
.SUN NIGHT...E to NE winds 20 to 30 kt. Seas 6 to 10 ft. 
.MON...N to NE winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON NIGHT...N to NE winds 15 to 25 kt, becoming N to NW 10 to
20 kt. Seas 5 to 9 ft. 
.TUE...N winds 5 to 15 kt, becoming W to SW. Seas 6 to 10 ft. 
.TUE NIGHT...W to SW winds 5 to 15 kt. Seas 5 to 6 ft. 

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

.TONIGHT...W to NW winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 3 to 6 ft. Scattered showers and tstms. 
.FRI...W to NW winds 5 to 15 kt, becoming variable. Seas 3 to
4 ft. Chance of showers and tstms.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
Chance of showers and tstms. 
.SAT...E to NE winds 5 to 15 kt. Seas 3 to 4 ft. Chance of
showers. 
.SAT NIGHT...E winds 15 to 25 kt. Seas 4 to 8 ft. 
.SUN...E winds 15 to 25 kt, becoming NE. Seas 6 to 10 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 9 ft. 
.MON...NE winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas
4 to 8 ft. 
.MON NIGHT...Variable winds 5 to 15 kt, diminishing to less than
10 kt. Seas 4 to 7 ft. 
.TUE...Variable winds less than 10 kt, becoming S. Seas 3 to
6 ft. 
.TUE NIGHT...S winds 5 to 15 kt, becoming SW. Seas 3 to 6 ft. 

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

.TONIGHT...W to NW winds 5 to 15 kt, diminishing to less than
10 kt. Seas 3 to 5 ft. Scattered showers and tstms. 
.FRI...N to NE winds less than 10 kt, becoming E to NE. Seas
3 to 4 ft. Scattered showers and tstms. 
.FRI NIGHT...E winds less than 10 kt, becoming NE. Seas 3 to
4 ft. Scattered showers and chance of tstms. 
.SAT...NE winds 5 to 15 kt, becoming E to NE 10 to 20 kt. Seas
3 to 5 ft. Scattered showers and tstms. 
.SAT NIGHT...E to NE winds 10 to 20 kt. Seas 4 to 7 ft. 
.SUN...NE winds 15 to 25 kt. Seas 6 to 10 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 9 ft. 
.MON...NE winds 5 to 15 kt. Seas 4 to 8 ft. 
.MON NIGHT...E to NE winds 5 to 15 kt, diminishing to less than
10 kt. Seas 4 to 7 ft. 
.TUE...E winds less than 10 kt, becoming SE. Seas 4 to 6 ft. 
.TUE NIGHT...S to SE winds 5 to 15 kt. Seas 3 to 6 ft. 

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

.TONIGHT...Variable winds less than 10 kt, increasing to 5 to
15 kt. Seas 3 to 4 ft. Scattered showers and tstms.
.FRI...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. Scattered
showers and tstms. 
.FRI NIGHT...E winds 5 to 15 kt, becoming NE. Seas 3 to 5 ft.
Chance of showers and tstms. 
.SAT...NE winds 10 to 20 kt. Seas 3 to 6 ft. Scattered showers
and tstms. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.SUN...NE winds 10 to 20 kt. Seas 4 to 7 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 9 ft. 
.MON...E to NE winds 5 to 15 kt. Seas 4 to 8 ft. 
.MON NIGHT...E winds 5 to 15 kt, becoming E to SE. Seas 4 to
7 ft. 
.TUE...E to SE winds less than 10 kt. Seas 3 to 6 ft. 
.TUE NIGHT...S to SE winds 5 to 15 kt. Seas 3 to 6 ft. 

.Forecaster Bancroft. Ocean Prediction Center.