533
FZNT34 KWBC 181511
OFFN32

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
1111 AM EDT Mon Aug 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...Low pressure just E of the S
waters will lift slowly NE along a stationary front today and
tonight while a cold front moves S into the N waters. The cold
front will become stationary across the central waters tonight
through Tue night. High pressure will build S into the N waters
behind the front, then move NE away from the area Wed. Hurricane
Erin, currently well SE of the waters, will be near 29.5N 73.5W
at 8 AM EDT Wed, then move to near 31.7N 73.1W by 8 PM EDT Wed
night, then to 33.9N 71.6W by 8 AM ED Thu, then continue to move
NE through Fri night. Long period SE to S swell from Erin,
already affecting the S waters, will spread N into the central
and N waters late tonight through Tue night. Significant swell
will continue through Fri night while gradually backing to the E
Wed through Thu night. For more information on Hurricane Erin,
please closely monitor the latest forecasts from the National
Hurricane Center.

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

.TODAY...NE winds 15 to 25 kt. Seas 4 to 8 ft. Isolated showers
and tstms.
.TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. Isolated showers
and tstms.
.TUE...E winds 15 to 20 kt. Seas 6 to 10 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 10 ft.
.WED...E winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 8 to
13 ft.
.WED NIGHT...E winds 15 to 20 kt, becoming NE 15 to 25 kt. Seas
12 to 20 ft.
.THU...NE winds 20 to 30 kt. Seas 14 to 23 ft.
.THU NIGHT...N to NE winds 20 to 30 kt. Seas 13 to 22 ft.
.FRI...N to NE winds 15 to 25 kt. Seas 10 to 17 ft.
.FRI NIGHT...E to SE winds 5 to 15 kt, becoming S 5 to 10 kt.
Seas 6 to 11 ft.

Baltimore Canyon to the Hague Line south of 1000 fm

...HURRICANE CONDITIONS POSSIBLE THU...

.TODAY...N to NE winds 15 to 25 kt. Seas 4 to 8 ft. Isolated
showers and tstms.
.TONIGHT...E to NE winds 15 to 25 kt. Seas 5 to 9 ft. Isolated
showers and tstms.
.TUE...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 6 to
10 ft. Scattered showers and tstms.
.TUE NIGHT...E winds 5 to 15 kt. Seas 6 to 11 ft. Scattered
showers and tstms.
.WED...E winds 10 to 20 kt. Seas 9 to 15 ft.
.WED NIGHT...E winds 20 to 30 kt. Seas 12 to 19 ft, building to
17 to 27 ft.
.THU...Hurricane conditions possible.
.THU NIGHT...Hurricane conditions possible.
.FRI...Hurricane conditions possible.
.FRI NIGHT...N to NE winds 20 to 30 kt. Seas 12 to 20 ft.

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

...HURRICANE CONDITIONS POSSIBLE WED NIGHT...

.TODAY...NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
4 to 7 ft. Isolated showers and tstms.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 9 ft. Scattered
showers and tstms.
.TUE...E winds 10 to 20 kt. Seas 6 to 11 ft. Scattered showers
and tstms.
.TUE NIGHT...E winds 10 to 20 kt. Seas 9 to 15 ft. Scattered
showers and tstms.
.WED...E winds 20 to 30 kt. Seas 13 to 20 ft, building to 18 to
27 ft.
.WED NIGHT...E winds 35 to 45 kt, increasing to 65 to 80 kt.
Seas 29 to 44 ft.
.THU...Hurricane conditions possible.
.THU NIGHT...Hurricane conditions possible.
.FRI...N winds 20 to 30 kt, diminishing to 10 to 20 kt. Seas
11 to 19 ft.
.FRI NIGHT...E to NE winds 5 to 15 kt. Seas 8 to 14 ft.

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

...HURRICANE CONDITIONS POSSIBLE WED...

.TODAY...NE winds less than 10 kt, increasing to 5 to 15 kt.
Seas 4 to 8 ft. Isolated showers and tstms.
.TONIGHT...E to NE winds 5 to 10 kt, becoming 5 to 15 kt. Seas
6 to 11 ft. Isolated showers and tstms.
.TUE...E winds 10 to 15 kt, becoming 10 to 20 kt. Seas 9 to
15 ft. Scattered showers and tstms.
.TUE NIGHT...E winds 20 to 30 kt. Seas 15 to 25 ft. Scattered
showers and tstms.
.WED...E winds 35 to 45 kt, increasing to 50 to 65 kt. Seas
19 to 34 ft, building to 31 to 46 ft.
.WED NIGHT...E to SE winds 80 to 100 kt. Seas 34 to 49 ft.
.THU...Hurricane conditions possible.
.THU NIGHT...Tropical storm conditions possible.
.FRI...N to NE winds 10 to 20 kt. Seas 11 to 18 ft.
.FRI NIGHT...NE winds 10 to 15 kt, becoming E to NE 5 to 10 kt.
Seas 7 to 13 ft.

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

...TROPICAL STORM WARNING...
...HURRICANE CONDITIONS POSSIBLE WED...

.TODAY...NE winds 5 to 15 kt. Seas 5 to 9 ft.
.TONIGHT...E to NE winds 5 to 15 kt. Seas 7 to 13 ft. Isolated
showers and tstms.
.TUE...E to NE winds 15 to 25 kt. Seas 11 to 18 ft. Scattered
showers and tstms.
.TUE NIGHT...E to NE winds 20 to 30 kt, increasing to 30 to
40 kt. Seas 14 to 22 ft, building to 20 to 30 ft. Scattered
showers and tstms.
.WED...E to NE winds 75 to 95 kt. Seas 32 to 47 ft.
.WED NIGHT...E to SE winds 85 to 100 kt, becoming W 75 to 90 kt.
Seas 31 to 46 ft, subsiding to 19 to 34 ft.
.THU...Tropical storm conditions possible.
.THU NIGHT...N to NW winds 15 to 25 kt. Seas 10 to 17 ft.
.FRI...N to NE winds 5 to 15 kt, becoming E to NE. Seas 8 to
14 ft.
.FRI NIGHT...E to NE winds 10 to 15 kt, becoming E 5 to 10 kt.
Seas 6 to 11 ft.

.Forecaster Holley. Ocean Prediction Center.