333
FZNT34 KWBC 210300
OFFN32

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
1100 PM EDT Wed Aug 20 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...The center of large Hurricane
Erin is located over the outer S waters early tonight. Eric will
continue to track N and then N to NE through the outer S and
outer central waters later tonight and Thu. It will then turn
more NE and move through the outer northern Mid-Atlantic Waters
Thu night and Fri, passing E of the area Fri night. Significant S
to SE swell will continue through Fri night while gradually
backing to the E. A high pressure area will build over the waters
Fri night through Sat night while a stationary front forms over
the far S waters. A weak area of low pressure will form along the
front off the South Carolina coast Sat night, then lift NE
through the central waters Sun into Sun night while the area of
high pressure to the N shifts E of the region. A cold front will
approach the area from the W late Sun night, then move E across
the area Mon and Mon 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

...TROPICAL STORM WARNING...

.TONIGHT...E to NE winds 15 to 25 kt. Seas 9 to 17 ft. Scattered
showers and tstms.
.THU...NE winds 25 to 30 kt, increasing to 30 to 35 kt. Seas
13 to 25 ft. Chance of showers and tstms.
.THU NIGHT...N winds 25 to 35 kt, becoming 25 to 30 kt. Seas
13 to 25 ft. Chance of showers.
.FRI...N winds 20 to 30 kt. Seas 11 to 20 ft.
.FRI NIGHT...E to NE winds 10 to 15 kt, becoming S to SW 5 to
15 kt. Seas 8 to 14 ft.
.SAT...S to SE winds less than 10 kt, increasing to 5 to 15 kt.
Seas 6 to 10 ft.
.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN...S winds 10 to 15 kt. Seas 4 to 7 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 7 ft.
.MON...S to SW winds 5 to 10 kt. Seas 3 to 6 ft.
.MON NIGHT...SW winds 5 to 15 kt, becoming W to NW 10 to 15 kt.
Seas 3 to 5 ft.

Baltimore Canyon to the Hague Line south of 1000 fm

...HURRICANE WARNING...

.TONIGHT...E winds 15 to 25 kt, increasing to 25 to 35 kt. Seas
11 to 21 ft. Scattered showers and tstms.
.THU...E winds 50 to 60 kt, becoming E to NE 70 to 85 kt. Seas
16 to 32 ft, building to 22 to 43 ft. Showers and tstms.
.THU NIGHT...E to NE winds 70 to 85 kt. Seas 30 to 49 ft.
Showers and tstms with vsby 1 nm or less.
.FRI...N to NE winds 65 to 80 kt, becoming N to NW 45 to 55 kt.
Seas 27 to 42 ft. Tstms and scattered showers.
.FRI NIGHT...N to NW winds 25 to 35 kt, becoming N 15 to 25 kt.
Seas 16 to 31 ft.
.SAT...E to NE winds 5 to 15 kt. Seas 10 to 19 ft.
.SAT NIGHT...E winds 5 to 10 kt, becoming S to SE 5 to 15 kt.
Seas 7 to 12 ft.
.SUN...S to SE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 6 to
10 ft.
.SUN NIGHT...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
6 to 8 ft.
.MON...S to SE winds 15 to 25 kt. Seas 5 to 8 ft.
.MON NIGHT...S to SW winds 15 to 25 kt, becoming W to SW 10 to
20 kt. Seas 4 to 7 ft.

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

...HURRICANE WARNING...

.TONIGHT...E winds 40 to 50 kt, becoming E to SE 80 to 95 kt.
Seas 14 to 28 ft, building to 30 to 47 ft. Showers and tstms.
.THU...S to SE winds 80 to 95 kt, becoming W to SW 75 to 90 kt.
Seas 32 to 55 ft. Showers and tstms.
.THU NIGHT...NW winds 50 to 65 kt, becoming N to NW 25 to 35 kt.
Seas 26 to 41 ft, subsiding to 16 to 32 ft. Scattered tstms and
chance of showers.
.FRI...N winds 20 to 30 kt. Seas 13 to 24 ft. Chance of showers
and tstms.
.FRI NIGHT...N to NE winds 10 to 20 kt, becoming E to NE 5 to
15 kt. Seas 10 to 17 ft.
.SAT...E winds 5 to 15 kt. Seas 8 to 13 ft.
.SAT NIGHT...E to SE winds 5 to 15 kt, becoming S to SE. Seas
6 to 10 ft.
.SUN...SE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 4 to 8 ft.
.SUN NIGHT...S to SE winds 10 to 15 kt, becoming S 15 to 25 kt.
Seas 4 to 8 ft.
.MON...SW winds 10 to 20 kt. Seas 4 to 8 ft.
.MON NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 6 ft.

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

...HURRICANE WARNING...

.TONIGHT...S to SE winds 80 to 95 kt, becoming S to SW. Seas
28 to 55 ft. Showers and tstms.
.THU...W to SW winds 75 to 90 kt, becoming W to NW 40 to 50 kt.
Seas 32 to 55 ft, subsiding to 24 to 42 ft. Showers and tstms.
.THU NIGHT...N to NW winds 20 to 30 kt. Seas 14 to 28 ft. Chance
of showers and tstms.
.FRI...N to NW winds 10 to 20 kt. Seas 10 to 19 ft. Chance of
showers and tstms.
.FRI NIGHT...N to NE winds 10 to 15 kt, becoming E to NE 5 to
10 kt. Seas 8 to 14 ft.
.SAT...E winds less than 10 kt. Seas 7 to 12 ft.
.SAT NIGHT...E winds 5 to 15 kt, becoming SE. Seas 6 to 10 ft.
.SUN...SE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to
8 ft.
.SUN NIGHT...S to SE winds 10 to 20 kt, becoming SW 5 to 15 kt.
Seas 4 to 7 ft.
.MON...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to
7 ft.
.MON NIGHT...W to SW winds 5 to 15 kt. Seas 4 to 7 ft.

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

...HURRICANE WARNING...

.TONIGHT...W to SW winds 70 to 90 kt. Seas 26 to 51 ft.
Scattered showers and tstms.
.THU...W to NW winds 25 to 35 kt, becoming NW 20 to 30 kt. Seas
20 to 32 ft, subsiding to 13 to 23 ft. Scattered showers and
isolated tstms.
.THU NIGHT...NW winds 20 to 30 kt, becoming N to NW 10 to 20 kt.
Seas 10 to 19 ft. Scattered showers and isolated tstms.
.FRI...N to NE winds 10 to 20 kt, becoming E to NE 5 to 15 kt.
Seas 8 to 14 ft. Scattered showers and tstms.
.FRI NIGHT...E to NE winds 5 to 15 kt. Seas 7 to 12 ft.
.SAT...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 6 to
10 ft.
.SAT NIGHT...E winds 5 to 15 kt, becoming SE. Seas 5 to 9 ft.
.SUN...S to SE winds 5 to 15 kt, becoming S to SW. Seas 5 to
8 ft.
.SUN NIGHT...W to SW winds 5 to 15 kt, increasing to 10 to
20 kt. Seas 4 to 8 ft.
.MON...W to NW winds 5 to 15 kt. Seas 4 to 8 ft.
.MON NIGHT...W to SW winds 5 to 15 kt. Seas 4 to 7 ft.

.Forecaster Mills. Ocean Prediction Center.