Atlantic Text Briefing Package

[Printable Version]

AGNT40 KWNM 181410
MIMATN

Marine Weather Discussion for N Atlantic Ocean
NWS Ocean Prediction Center Washington DC
1010 AM EDT Sat Aug 18 2018

.FORECAST DISCUSSION...Major features/winds/seas/significant 
.weather for the North Atlantic Ocean W of 50W from 30N to 50N.

A front over the northern NT1 waters will gradually move south
today and Sunday, becoming anchored east-northeast off of the
Virginia and North Carolina coasts Monday into early Tuesday
before starting to move gradually back north. Surface waves will
move along the front for the early part of the week. In the near
term, outside of thunderstorms, winds should be below hazards, 
and the latest observations were in concert with the gridded and 
worded forecasts, on average 10 to 20 knots across the offshore 
waters. For this forecast, will adjust the winds up about 5 knots
mainly over ANZ835 based on the latest observations showing 
winds from 15 to 20 knots, and will adjust the waves higher by 
around a foot, to around 7 feet, east of the Virginia and North 
Carolina coasts in vicinity of the Gulf Stream, again, based on 
the latest observations. Coolest cloud tops on satellite imagery 
were located in ANZ805 and ANZ900, and lightning displays showed 
a scattering of strikes from ANZ910 southwest into ANZ835. 
Tonight, by around midnight, the greatest concentration of storms
should exist, according to the HRRR WRF, from ANZ910 west- 
southwest to the Virginia/North Carolina border on the southern 
end of a positively-tilted upper trough and in vicinity of the 
surface front.

By Wednesday, as surface low pressure deepens over the lower
Great Lakes and moves northeast across far northern New England
into the Canadian Maritimes Wednesday night and Thursday, there
is some potential for gales to occur in the far eastern mid-
Atlantic offshore zones especially in and near ANZ905 and ANZ910.
The 00UTC ECMWF is faster with low pressure and just east of the
offshore zones with any concerns for gales on Thursday, while the
GFS is slower with winds around 30 knots directly in ANZ910 by
Wednesday evening. The UKMET is closer to the ECMWF currently,
including with a sharper upper trough as compared to the GFS.
925mb winds on the GFS increase to around 45 knots in ANZ905 and
ANZ910 by Wednesday evening, though the increase in winds on the
ECMWF at the same level is just east of the offshore waters for
early Thursday. Without really strong consensus, there are no 
plans for changes to the current forecast for the middle of next 
week for this update, but will certainly review the later model 
guidance for any potential changes to that mid-week forecast.


As noted below, surge guidance would indicate levels around a
half-foot particularly off of the New Jersey and Delaware coasts
Sunday night into Monday. The ETSS is just a touch below values
of the ESTOFS, but they are very close. Keep abreast of the 
latest forecasts from local National Weather Service coastal 
offices into early next week. 

-----------------------------------------------------------------
PREVIOUS DISCUSSION...

Over the short term, a slow-moving warm front extending from the
Gulf of Maine southeastward toward Georges Bank is still expect
to lift north of the waters today as a cold front approaches from
the northwest. The cold front will cross New England waters this
afternoon into tonight, then stall over the northern Mid-Atlantic
offshore waters Sunday, with a few weak waves of low pressure
tracking east and northeast along the stalled front. While no
hazard-level winds outside of thunderstorms can be expected into
Sunday over the waters, a shift to moderate to gusty north and
then northeast winds is still likely in wake of the front. An
ASCAT pass from last evening around 0246Z indicated southerly
winds up to 20 kt occurring off the southeast U.S. coast. The
latest GOES-IR satellite imagery and lightning density data
indicates the stronger thunderstorms currently near and east of
Long Island and near the Jersey Shore, with a few thunderstorms
also over the Gulf of Maine and well off the mid-Atlantic coast
near 36-37N and around 70W. SREF thunderstorm guidance indicates
thunderstorms increasing over many portions of the offshore 
waters today into Sunday in advance of the cold front. All 
mariners should use caution as the stronger thunderstorms have 
the potential to produce wind gusts exceeding gale force, and 
very rough seas today into Sunday. For the morning package, we 
will attempt to highlight these stronger winds in the zones most 
likely impacted by the stronger thunderstorms today. We will 
populate winds with the 00Z Warw model guidance and cap winds at 
25 kt today into Sunday over the waters. This will result in 
little change from the past few OPC forecasts for the early 
morning package, with confidence levels above average with very 
good 00Z model agreement noted over the region through Sunday.

For Sunday night into Tuesday over the waters, the 00Z models
remain in very good agreement, with the 00Z GFS and 00Z ECMWF 
remaining in excellent agreement across the region. We will 
populate grids for the early morning package with a 50/50 blend 
of the 00Z GFS first sigma layer winds and 00Z ECMWF winds for 
Sunday into into Tuesday. This will maintain forecast continuity
over the waters, with the stalled front over the Mid-Atlantic 
waters slowly weakening by Monday night and Tuesday as low 
pressure which formed along the front tracks off to the east of 
the offshore waters, and winds slowly diminishing across the 
region. The main concern will continue to be the locally very 
gusty winds and very rough seas in and near thunderstorms over 
the region, with the best chance for stronger thunderstorms near
the stalled front over the Mid-Atlantic waters Sunday night into
Tuesday. For Tuesday night into Wednesday night over the region 
we will trend the forecast more toward the 00Z ECMWF as it 
appears be to just about in the middle of the 00Z guidance 
envelope, with the 00Z GFS and 00Z Canadian models slower and the
00Z UKMET and NAVGEM models faster regarding the approach and 
then passage of the next cold front over the region Wednesday 
and Wednesday night. Again, no hazard-level winds appear likely 
over the region for most of next week, except in and near 
stronger thunderstorms. Confidence levels remain above average 
over the region through Tuesday, and then become near average 
thereafter as models agreement diminishes somewhat by the middle 
of next week.

Seas...Once again early this morning the 00Z ECMWF WAM appears to
be verifying a little better over the region than the 00Z Wave- 
watch model output, based on the latest observations and 
altimeter data, with sea heights up to 6 feet noted off the 
southeast U.S. coast and 4 feet over the Gulf of Maine. For the 
early morning package, in order to better match the wind 
forecast, we will use a 90 percent WAM, 10 percent Wavewatch 
blend for today into tonight, use a 50/50 blend of these two wave
models for Sunday into Tuesday, and then something closer to the
00Z WAM guidance for Tue night into Wed night over the region. 
We will adjust sea height grids slightly prior to forecast 
issuance to fit initial conditions, and then in deference to 
nearby coastal WFO and TAFB grids over the next few days.

Extratropical Storm Surge Guidance: No significant storm surge 
events are expected through at least early next week. However, 
late in the weekend and into next week, the potential exists for
a minor surge event along the southern New England and Mid 
Atlantic coasts as onshore E-NE flow persists poleward of a 
stalled front and developing low pressure. The 00Z ESTOFS is 
still slightly higher than the 00Z ETSS, with both models 
showing surge values less than 1 ft. With our forecast thinking 
that the northeast winds may be slightly higher than the GFS 
indicates, it would follow that the ETSS/ESTOFS are likely 
slightly low with the surge. Please monitor the latest forecasts
from local National Weather Service coastal offices into early 
next week.


.WARNINGS...Preliminary.

.NT1 New England Waters...
     None.

.NT2 Mid-Atlantic Waters...
     None.

$$

.Forecaster Figurskey/Mills. Ocean Prediction Center.
Last Update:14:11Z, 18 August 2018
Updates: Four times per day

FZNT21 KWBC 181432
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
1032 AM EDT Sat Aug 18 2018

New England continental shelf and slope waters from 25 nm
offshore to the Hague Line, except to 1000 fm south of New
England.

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.

ANZ898-190245-
1032 AM EDT Sat Aug 18 2018

.SYNOPSIS FOR NEW ENGLAND WATERS...Low pressure over the northern
Gulf of Maine will move east across Nova Scotia today and
tonight, pulling a cold front east and southeast into the 
waters. The front will stall to the south of the area Sunday. 
Low pressure will develop south of Long Island Sunday, slowly 
track east along the stationary front Sunday night into Monday
night, and then pass well east of the area by Tuesday. Another 
cold front will approach the coast from the west later Tuesday
and Tuesday night, and move east and southeast over the waters 
Wednesday and Wednesday night. 

$$

ANZ800-190245-
Gulf of Maine to the Hague Line-
1032 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 20 kt, becoming N to NE. Seas 3 to 5 ft.
Scattered showers and TSTMs with VSBY 1 nm or less. 
.TONIGHT...NE winds 15 to 25 kt. Seas 3 to 5 ft. Scattered
showers and TSTMs. 
.SUN...NE winds 15 to 25 kt. Seas 3 to 6 ft. Slight chance of
showers. 
.SUN NIGHT...E to NE winds 10 to 20 kt. Seas 3 to 5 ft. Chance
of showers. 
.MON...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.MON NIGHT...E to NE winds 10 to 20 kt, diminishing to 5 to
15 kt. Seas 3 to 6 ft. 
.TUE...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...E to SE winds 5 to 15 kt. Seas 3 to 5 ft. 
.WED...S winds increasing to 15 to 25 kt. Seas 3 to 6 ft. 
.WED NIGHT...W to SW winds 10 to 20 kt, becoming NW. Seas 3 to
6 ft. 

$$

ANZ805-190245-
Georges Bank between Cape Cod and 68W north of 1000 fm-
1032 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers
and TSTMs. 
.TONIGHT...Winds veering and becoming NE 15 to 25 kt. Seas 3 to 
5 ft. Scattered showers and TSTMs. 
.SUN...NE winds 15 to 25 kt. Seas 4 to 6 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. Showers and a
chance of TSTMs.
.MON and MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...NE winds 5 to 15 kt. Seas 4 to 5 ft. 
.TUE NIGHT...E to NE winds 5 to 15 kt, becoming W. Seas 3 to
5 ft. 
.WED...S winds increasing to 15 to 25 kt. Seas 4 to 6 ft. 
.WED NIGHT...W to SW winds 15 to 20 kt, becoming N to NW 10 to
20 kt. Seas 4 to 7 ft. 

$$

ANZ900-190245-
Georges Bank between 68W and the Hague Line-
1032 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers
and chance of TSTMs. 
.TONIGHT...SW winds 5 to 15 kt, becoming NE 10 to 20 kt. Seas
3 to 4 ft. Scattered showers and TSTMs. 
.SUN...NE winds 15 to 25 kt. Seas 4 to 5 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. Scattered
showers. 
.MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 5 to 6 ft. 
.TUE...E to NE winds 5 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...E winds 5 to 15 kt, becoming W to SW. Seas 4 to
5 ft. 
.WED...SW winds 10 to 15 kt, becoming S 10 to 20 kt. Seas 4 to
6 ft. 
.WED NIGHT...SW winds 15 to 20 kt, becoming W to NW 10 to 15 kt.
Seas 4 to 6 ft. 

$$

ANZ810-190245-
South of New England between the Great South Channel and Montauk
Point to 1000 fm-
1032 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 5 to 15 kt, becoming N to NE 10 to 20 kt.
Seas 3 to 5 ft. Showers and scattered TSTMs.
.SUN...N winds 15 to 25 kt. Seas 4 to 6 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 6 ft. Scattered showers and TSTMs. 
.MON...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...N to NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...Variable winds less than 10 kt, becoming S to SW.
Seas 3 to 4 ft. 
.WED...S winds 10 to 20 kt, becoming SW 15 to 20 kt. Seas 3 to
6 ft. 
.WED NIGHT...W to SW winds 15 to 20 kt, becoming N to NW 10 to
15 kt. Seas 4 to 7 ft. 

$$

ANZ815-190245-
South of Long Island between Montauk Point and Sandy Hook to
1000 fm-
1032 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers
and TSTMs. 
.TONIGHT...W to SW winds 10 to 20 kt, becoming N to NE. Seas
3 to 5 ft. Showers and scattered TSTMs. 
.SUN...N to NE winds 15 to 25 kt. Seas 4 to 7 ft. Scattered
showers and TSTMs. 
.SUN NIGHT...NE winds 15 to 25 kt, diminishing to 10 to 15 kt.
Seas 4 to 6 ft. Scattered showers and TSTMs. 
.MON...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.MON NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 3 to 5 ft. 
.TUE...E to NE winds less than 10 kt. Seas 3 to 5 ft. 
.TUE NIGHT...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
3 to 5 ft. 
.WED...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. 
.WED NIGHT...Winds becoming NW 10 to 15 kt, then N. Seas 3 to 6
ft. 

$$

.Forecaster Figurskey. Ocean Prediction Center.
Last Update:14:34Z, 18 August 2018
Updates: Four times per day

FZNT22 KWBC 181438
OFFNT2

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
1038 AM EDT Sat Aug 18 2018

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.

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.

ANZ899-190230-
1038 AM EDT Sat Aug 18 2018

.SYNOPSIS FOR MID ATLC WATERS...High pressure just southeast of
the southern waters will persist today, then shift further east
of the waters and weaken tonight into Sunday. A cold front will 
approach the area from the north and northwest today, then stall
over the northern portions tonight. Low pressure will develop 
off the New Jersey coast tonight, then slowly track east and
northeast Sunday into Monday night, pulling the front slowly
south into the central waters. The front will stall off the 
southern mid-Atlantic coast later Monday night into Tuesday, 
then the front will lift back north as a warm front later Tuesday
into Wednesday as another cold front approaches the coast. The 
cold front will move southeast into the northern and central 
waters later Wednesday and Wednesday night.

$$

ANZ820-190230-
Hudson Canyon to Baltimore Canyon to 1000 fm-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt. Seas
3 to 5 ft. Scattered showers and TSTMs.
.TONIGHT...W to SW winds 10 to 20 kt, becoming W to NW 5 to
15 kt. Seas 3 to 5 ft. Showers and scattered TSTMs.
.SUN...N to NE winds 10 to 20 kt. Seas 4 to 7 ft. Scattered
showers and TSTMs. 
.SUN NIGHT...NE winds 15 to 25 kt, diminishing to 5 to 15 kt.
Seas 3 to 6 ft. Scattered showers and TSTMs. 
.MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
3 to 5 ft. 
.MON NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 3 to 5 ft. 
.TUE...E to NE winds 5 to 10 kt, becoming E to SE. Seas 3 to
4 ft. 
.TUE NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SW winds 10 to 20 kt, becoming W. Seas 3 to 6 ft. 
.WED NIGHT...W to NW winds 10 to 15 kt, becoming N. Seas 3 to
5 ft. 

$$

ANZ915-190230-
Between 1000 fm and 38.5N west of 69W-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt. Seas
3 to 5 ft. Scattered showers and TSTMs.
.TONIGHT...W to SW winds 10 to 20 kt. Seas 4 to 5 ft. Showers and
scattered TSTMs. 
.SUN...W winds 15 to 25 kt, becoming N 10 to 20 kt. Seas 4 to
7 ft. Scattered showers and TSTMs.
.SUN NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 5 to 7 ft. Scattered showers and TSTMs. 
.MON...N to NE winds 5 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...NE winds 5 to 15 kt, becoming N to NE 5 to 10 kt.
Seas 4 to 5 ft. 
.TUE...N winds 5 to 10 kt, becoming variable. Seas 4 to 5 ft. 
.TUE NIGHT...S to SW winds 5 to 15 kt, increasing to 10 to
20 kt. Seas 3 to 5 ft. 
.WED...S to SW winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.WED NIGHT...W to NW winds 15 to 25 kt. Seas 5 to 7 ft. 

$$

ANZ920-190230-
Baltimore Canyon to 69W east of 1000 fm and south of 38.5N to
250 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt. Seas
4 to 7 ft. Scattered showers and TSTMs.
.TONIGHT...W to SW winds 15 to 25 kt. Seas 4 to 8 ft. Showers and
scattered TSTMs. 
.SUN...W to SW winds 15 to 25 kt. Seas 4 to 8 ft. Showers and
TSTMs. 
.SUN NIGHT...W to SW winds 15 to 25 kt. Seas 5 to 8 ft.
Scattered showers and TSTMs. 
.MON...W winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas
4 to 7 ft. 
.MON NIGHT...N to NE winds less than 10 kt. Seas 4 to 5 ft. 
.TUE...Variable winds less than 10 kt. Seas 4 to 5 ft. 
.TUE NIGHT...Variable winds 5 to 15 kt, becoming S to SW 10 to
20 kt. Seas 3 to 5 ft. 
.WED...SW winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.WED NIGHT...W to SW winds 15 to 25 kt. Seas 5 to 8 ft. 

$$

ANZ905-190230-
East of 69W to the Hague Line between 1000 fm and 39N-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 20 kt. Seas 3 to 4 ft. Chance of showers
and TSTMs. 
.TONIGHT...SW winds 10 to 15 kt, becoming 10 to 20 kt. Seas 4 to
5 ft. Showers and scattered TSTMs.
.SUN...W to SW winds 15 to 25 kt. Seas 4 to 6 ft. Showers and
scattered TSTMs. 
.SUN NIGHT...Winds becoming N to NE 10 to 20 kt. Seas 5 to 6 ft.
Scattered showers and TSTMs. 
.MON...NE winds 5 to 15 kt, becoming N to NE. Seas 5 to 7 ft. 
.MON NIGHT...Variable winds 5 to 15 kt. Seas 5 to 6 ft. 
.TUE...Variable winds 5 to 15 kt, becoming W to SW 5 to 10 kt.
Seas 4 to 6 ft. 
.TUE NIGHT...SW winds 5 to 15 kt, increasing to 10 to 20 kt.
Seas 4 to 5 ft. 
.WED...S to SW winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...W to SW winds 15 to 25 kt. Seas 4 to 8 ft. 

$$

ANZ910-190230-
East of 69W and south of 39N to 250 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to
6 ft. Chance of showers and TSTMs.
.TONIGHT...SW winds 15 to 25 kt. Seas 4 to 7 ft. Showers and
scattered TSTMs. 
.SUN...W to SW winds 15 to 25 kt. Seas 5 to 9 ft. Scattered
showers and TSTMs. 
.SUN NIGHT...W winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas
5 to 8 ft. Scattered showers and TSTMs. 
.MON...W to SW winds 10 to 20 kt, becoming W to NW. Seas 5 to
7 ft. 
.MON NIGHT...W to NW winds less than 10 kt. Seas 5 to 6 ft. 
.TUE...W to NW winds 5 to 10 kt. Seas 5 to 6 ft. 
.TUE NIGHT...W winds 5 to 10 kt, becoming SW 5 to 15 kt. Seas
4 to 5 ft. 
.WED...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. 
.WED NIGHT...W to SW winds 20 to 30 kt. Seas 6 to 9 ft. 

$$

ANZ825-190230-
Baltimore Canyon to Cape Charles Light to 100 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 25 kt. Seas 3 to 6 ft. Scattered showers
and TSTMs. 
.TONIGHT...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. Scattered
showers and TSTMs. 
.SUN...W winds 5 to 15 kt. Seas 3 to 6 ft. Scattered showers and
TSTMs. 
.SUN NIGHT...Variable winds 5 to 15 kt, becoming N to NE. Seas
3 to 5 ft. Scattered showers and TSTMs. 
.MON...NE winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
3 to 5 ft. 
.MON NIGHT...NE winds 10 to 15 kt, becoming E 5 to 10 kt. Seas
3 to 4 ft. 
.TUE...E to SE winds 5 to 10 kt, becoming S to SE 5 to 15 kt.
Seas 2 to 4 ft. 
.TUE NIGHT...S winds 10 to 20 kt, becoming SW 15 to 20 kt. Seas
3 to 5 ft. 
.WED...W to SW winds 10 to 20 kt. Seas 3 to 6 ft. 
.WED NIGHT...W to NW winds 10 to 15 kt, becoming N 5 to 15 kt.
Seas 3 to 5 ft. 

$$

ANZ828-190230-
Cape Charles Light to Currituck Beach Light to 100 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 25 kt. Seas 4 to 7 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 15 to 25 kt, becoming W. Seas 4 to 7 ft.
Showers and TSTMs. 
.SUN...W to SW winds 10 to 20 kt. Seas 4 to 8 ft. Scattered
showers and TSTMs. 
.SUN NIGHT...W to SW winds 10 to 20 kt. Seas 4 to 7 ft.
Scattered showers and TSTMs. 
.MON...W to NW winds 5 to 15 kt, becoming N to NE. Seas 3 to
5 ft. 
.MON NIGHT...E to NE winds less than 10 kt. Seas 3 to 5 ft. 
.TUE...E to SE winds less than 10 kt, becoming S. Seas 2 to
4 ft. 
.TUE NIGHT...S to SW winds 10 to 15 kt, becoming SW 15 to 20 kt.
Seas 3 to 5 ft. 
.WED...SW winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.WED NIGHT...W winds 10 to 20 kt, becoming N to NW 5 to 15 kt.
Seas 3 to 6 ft. 

$$

ANZ925-190230-
Baltimore Canyon to Hatteras Canyon between 100 nm and 250 nm
offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 20 kt. Seas 4 to 7 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 15 to 25 kt. Seas 4 to 8 ft. Scattered
showers and TSTMs. 
.SUN...SW winds 15 to 25 kt. Seas 4 to 8 ft. Scattered showers
and TSTMs.
.SUN NIGHT...W to SW winds 15 to 25 kt. Seas 4 to 8 ft. Showers
and TSTMs.  
.MON...W to SW winds 10 to 20 kt. Seas 4 to 7 ft. 
.MON NIGHT...W to SW winds 10 to 20 kt, becoming W 5 to 15 kt.
Seas 4 to 6 ft. 
.TUE...Variable winds 5 to 15 kt, becoming S to SW. Seas 3 to
5 ft. 
.TUE NIGHT...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt.
Seas 3 to 5 ft. 
.WED...SW winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.WED NIGHT...W to SW winds 15 to 25 kt. Seas 4 to 7 ft. 

$$

ANZ830-190230-
Currituck Beach Light to Cape Hatteras to 100 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 25 kt. Seas 4 to 7 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 15 to 25 kt. Seas 4 to 8 ft. Showers and
TSTMs. 
.SUN...SW winds 10 to 20 kt. Seas 4 to 8 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...SW winds 10 to 20 kt, becoming W. Seas 4 to 7 ft.
Showers and TSTMs. 
.MON...W winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 3 to
6 ft. 
.MON NIGHT...W winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE...W winds less than 10 kt, becoming W to SW. Seas 3 to
4 ft. 
.TUE NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SW winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.WED NIGHT...W to SW winds 15 to 25 kt. Seas 4 to 6 ft. 

$$

ANZ833-190230-
Cape Hatteras to Cape Fear to 100 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 15 to 25 kt. Seas 3 to 6 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 20 to 25 kt. Seas 4 to 7 ft. Scattered
showers and TSTMs. 
.SUN...SW winds 15 to 20 kt. Seas 4 to 7 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...W to SW winds 15 to 20 kt. Seas 3 to 6 ft. Showers
and scattered TSTMs. 
.MON...W winds 10 to 20 kt, becoming W to SW 10 to 15 kt. Seas
3 to 6 ft. 
.MON NIGHT...W to SW winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...W winds 10 to 15 kt, becoming SW. Seas 3 to 4 ft. 
.TUE NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SW winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED NIGHT...SW winds 15 to 25 kt, becoming W 10 to 20 kt. Seas
3 to 6 ft. 

$$

ANZ930-190230-
Hatteras Canyon to Cape Fear between 100 nm and 250 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 20 kt. Seas 4 to 7 ft. Chance of showers
and TSTMs. 
.TONIGHT...SW winds 15 to 25 kt. Seas 4 to 8 ft. Scattered
showers and TSTMs. 
.SUN...SW winds 15 to 25 kt. Seas 4 to 8 ft. Scattered showers
and scattered TSTMs.
.SUN NIGHT...SW winds 10 to 20 kt. Seas 4 to 7 ft. Scattered
showers and TSTMs.  
.MON...W to SW winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...W to SW winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SW winds 5 to 15 kt, increasing to 10 to 20 kt.
Seas 3 to 5 ft. 
.WED...SW winds 10 to 20 kt. Seas 4 to 7 ft. 
.WED NIGHT...W to SW winds 10 to 20 kt. Seas 4 to 7 ft. 

$$

ANZ835-190230-
Cape Fear to 31N to 1000 fm-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 10 to 20 kt. Seas 3 to 5 ft. Scattered showers
and TSTMs. 
.TONIGHT...SW winds 15 to 25 kt. Seas 3 to 6 ft. Scattered
showers and TSTMs. 
.SUN...SW winds 10 to 20 kt. Seas 3 to 6 ft. Scattered showers
and TSTMs. 
.SUN NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. Scattered
showers and TSTMs. 
.MON...W to SW winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas
3 to 5 ft. 
.MON NIGHT and TUE...SW winds 10 to 15 kt. Seas 2 to 4 ft. 
.TUE NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SW winds 10 to 20 kt. Seas 3 to 6 ft. 
.WED NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ935-190230-
Cape Fear to 31N east of 1000 fm to 250 nm offshore-
1038 AM EDT Sat Aug 18 2018

.TODAY...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
3 to 5 ft. Chance of showers and TSTMs.
.TONIGHT...SW winds 10 to 20 kt. Seas 3 to 6 ft. Scattered
showers and TSTMs. 
.SUN...SW winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to
6 ft. Scattered showers and TSTMs.
.SUN NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. Scattered
showers and TSTMs. 
.MON...SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...SW winds 5 to 15 kt. Seas 3 to 4 ft.
.TUE...W to SW winds 5 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...SW winds 5 to 15 kt, increasing to 10 to 20 kt.
Seas 3 to 5 ft. 
.WED and WED NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

.Forecaster Figurskey. Ocean Prediction Center.
Last Update:14:40Z, 18 August 2018
Updates: Four times per day

FZNT01 KWBC 181532
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC SAT AUG 18 2018 

CCODE/1:31:04:01:00/AOW+AOE/NWS/CCODE 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 

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. 

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION 
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE). 

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 
NATIONAL WEATHER SERVICE. EMAIL US AT 
VOSOPS@NOAA.GOV(LOWERCASE). 

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH 
AMERICAN ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.SHTML 

SECURITE 

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W 

SYNOPSIS VALID 1200 UTC AUG 18. 
24 HOUR FORECAST VALID 1200 UTC AUG 19. 
48 HOUR FORECAST VALID 1200 UTC AUG 20. 

.WARNINGS. 

...GALE WARNING... 
.12 HOUR FORECAST LOW 46N62W 1004 MB. WITHIN 150 NM OF CENTER 
EXCEPT W QUADRANT WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 46N57W 1005 MB. WITHIN 180 NM NW 
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 9 FT. ELSEWHERE 180 NM E 
AND 300 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS TO 8 FT. 
.48 HOUR FORECAST LOW 46N42W 1011 MB. FRONT TO EXTEND FROM LOW 
TO 41N56W. WITHIN 240 NM EITHER SIDE OF FRONT WINDS 20 TO 30 KT. 
SEAS TO 10 FT...HIGHEST N OF FRONT. 

.SYNOPSIS AND FORECAST. 

.LOW E OF AREA 51N31W 1007 MB MOVING NE 10 KT. OVER FORECAST 
WATERS WITHIN 300 NM W QUADRANT WINDS TO 25 KT. SEAS TO 10 FT. 
ELSEWHERE FROM 46N TO 53W E OF 41W WINDS LESS THAN 25 KT. SEAS 
TO 9 FT. 
.12 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA. 

.LOW 61N60W 996 MB MOVING SE 15 KT. OVER FORECAST WATERS WITHIN 
360 NM S AND SW QUADRANTS AND WITHIN 60 NM NE OF A FRONT 
EXTENDING FROM 61N49W TO 63N52W WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 60N47W 1005 MB. BETWEEN 90 NM AND 240 NM S 
QUADRANT WINDS TO 25 KT. SEAS TO 8 FT. ELSEWHERE WITHIN 90 NM SE 
OF A LINE FROM 60N35W TO 56N41W AREA OF SW WINDS TO 25 KT. SEAS 
TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED. 

.LOW 62N40W 1002 MB MOVING NE 10 KT. WITHIN 180 NM SE AND S 
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST LOW 64N36W 1005 MB. ASSOCIATED CONDITIONS 
DIMINISHED. 

.WITHIN 240 NM E OF A LINE FROM 42N40W TO 35N49W AREA OF SW 
WINDS 20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST CONDITIONS E OF AREA.

.24 HOUR FORECAST FROM 35N TO 38N BETWEEN 65W AND 72W WINDS TO 
25 KT. SEAS TO 8 FT. ALSO OVER FORECAST WATERS N OF 41N BETWEEN 
67W AND 70W WINDS TO 25 KT. SEAS LESS THAN 8 FT.  
.48 HOUR FORECAST NEW LOW 40N60W 1015 MB. WITHIN 300 NM S 
QUADRANT WINDS TO 25 KT. SEAS TO 8 FT. 

.48 HOUR FORECAST NEW LOW 63N65W 989 MB. OVER FORECAST WATERS N 
OF 55N W OF 53W WINDS 20 TO 30 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER ICE FREE 
FORECAST WATERS N OF 64N W OF 56W. 
.24 HOUR FORECAST DENSE FOG N OF 65N W OF 58W. 
.48 HOUR FORECAST DENSE FOG N OF 60N W OF 58W. 

.HIGH 49N46W 1018 MB MOVING NE 30 KT. 
.24 HOUR FORECAST HIGH E OF AREA. 

.24 HOUR FORECAST HIGH 31N69W 1020 MB. 
.48 HOUR FORECAST HIGH 32N64W 1023 MB.

.48 HOUR FORECAST HIGH 34N37W 1026 MB.

.48 HOUR FORECAST NEW HIGH 49N55W 1025 MB. 

.FORECASTER HUFFMAN. OCEAN PREDICTION CENTER. 

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC SAT AUG 18.
24 HOUR FORECAST VALID 1200 UTC SUN AUG 19.
48 HOUR FORECAST VALID 1200 UTC MON AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC 36 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 11N TO 14N BETWEEN 70W AND 78W...INCLUDING THE 
GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST FROM 11N TO 14N BETWEEN 68W AND 76W NE TO E 
WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT GULF OF VENEZUELA. SEAS 
TO 9 FT.
.24 HOUR FORECAST FROM 11N TO 15N BETWEEN 70W AND 77W... 
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. 
SEAS TO 9 FT.
.36 HOUR FORECAST FROM 11N TO 13N BETWEEN 70W AND 79W... 
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. 
SEAS TO 8 FT.
.48 HOUR FORECAST FROM 11N TO 15N BETWEEN 68W AND 76W... 
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. 
SEAS TO 8 FT. FROM 15N TO 17.5N BETWEEN 71W AND 75W E WINDS 20 
TO 25 KT. SEAS TO 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.
Last Update:15:33Z, 18 August 2018
Updates: Four times per day