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Atlantic Text Briefing Package

[Printable Version]

AGNT40 KWNM 180742
MIMATN

Marine Weather Discussion for N Atlantic Ocean
NWS Ocean Prediction Center Washington DC
342 AM EDT Thu Apr 18 2019

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

High pressure over the waters will move east and then stall as 
it strengthens just east of the region. Low pressure area to the 
west will move east but the strengthening high pressure will 
force the low to move northeast across the mid Atlantic states 
into northeast and that will force a very tight pressure gradient
over the waters and winds will increase to storm force threshold
over the central waters and probability of severe thunderstorms 
will also increase along the frontal boundary. Latest GOES16 
Geocolor satellite images show generally clear skies with just a 
few thin layered clouds streaming in from the west. latest 
Scatterometer passes at 0029Z/0220Z missed the central parts 
indicated winds to 25 kt. Latest NCEP weather map has high 
pressure area with centers 1026 MB over the north and 1023 MB 
over the southeast and a warm front now lies between the two high
pressure centers, across the southern Virginia waters. Pressure 
gradient is well relaxed across the region and maximum winds are 
only 25 kt over the the Baltimore Canyon. 

In the upper levels at 500 MB, an upper level ridge lies to the 
west of the forecast waters. This ridge will move east and be 
east of the waters allowing an upper level trough with 
significant energy to move into the waters. The presence of the 
energy support strengthening the low pressure systems that will 
pass just west of the central and northern waters. With the ridge
anchored just east of the waters, gradient will become tight 
between the low and high pressure. winds should increase to storm
force range in some zones over the central and southern waters. 

Global models GFS/CMC/UKMETHR/ECMWFHR have initialized fairly 
well the observed synoptic surface features with just small 
differences within 1 MB on the central pressure value over the 
north waters. Otherwise, models have a general agreement in the 
short term on moving high pressure east of the waters and allow 
low pressure to move east toward the waters but then turn 
northeast as high pressure remain strong east of the central 
waters. Models still have some differences on the winds speed 
over the central waters within 5 kt. However, the models have 
been fairly consistent and so will not deviate from the previous 
forecast and will just stay with the official forecast winds. 

.SEAS...are still small across the region and they range between
2 and 6 ft with highest seas over the eastern Baltimore Canyon. 
NWW3 and ECMWFWAVE models fit well the observed seas pattern and 
both wave models agree in the short term on building maximum seas
over the central waters in response to the forecast storm force 
winds. Will retain the official forecast seas. 

.EXTRATROPICAL STORM SURGE GUIDANCE...ESTOFS guidance generally 
shows positive surge values approaching .5 to 1 ft along the 
Eastern Seaboard in strong southerly and onshore flow ahead of 
the cold front, with the ETSS about half those values. Consult 
your local National Weather Service coastal office for the latest
and more detailed information. 

.WARNINGS...Preliminary.

.NT1 New England Waters...
.ANZ800...Gulf of Maine...
     Gale Friday into Friday night. 
.ANZ805...Georges Bank west of 68W...
     Gale Possible Saturday night.
.ANZ810...South of New England...
     Gale Friday night.
     Gale Possible Saturday into Saturday night. 
.ANZ815...South of Long Island...
     Gale Friday into Friday night. 
     Gale Possible Saturday into Saturday night. 

.NT2 Mid-Atlantic Waters...
.ANZ820...Hudson Canyon to Baltimore Canyon...
     Gale Friday into Friday night. 
     Gale Possible Saturday.
.ANZ915...Hudson Canyon to the Great South Channel...
     Gale Friday into Friday night. 
     Gale Possible Saturday into Saturday night. 
.ANZ920...Baltimore Canyon to the Great South Channel...
     Gale Friday into Friday night. 
     Storm Possible Saturday.
     Gale Possible Saturday night.
.ANZ905...The Great South Channel to the Hague Line...
     Gale Possible Saturday night into Sunday night. 
.ANZ910...East of the Great South Channel and south of 39N...
     Gale Friday into Friday night. 
     Gale Possible Saturday into Sunday. 
.ANZ825...Inner Waters from Baltimore Canyon to Cape Charles Light...
     Gale Friday into Friday night. 
     Gale Possible Saturday.
.ANZ828...Inner Waters from Cape Charles Light to Currituck Beach Light...
     Gale Friday.
     Storm Friday night.
     Gale Possible Saturday.
.ANZ925...Outer Waters from Baltimore Canyon to Hatteras Canyon...
     Gale Friday into Friday night. 
     Storm Possible Saturday.
     Gale Possible Saturday night.
.ANZ830...Inner Waters from Currituck Beach Light to Cape Hatteras...
     Gale Friday.
     Storm Friday night.
     Gale Possible Saturday.
.ANZ833...Inner Waters from Cape Hatteras to Cape Fear...
     Gale Friday.
     Storm Friday night.
     Gale Possible Saturday.
.ANZ930...Outer Waters from Hatteras Canyon to Cape Fear...
     Gale Friday into Friday night. 
     Gale Possible Saturday into Saturday night. 
.ANZ835...Inner Waters from Cape Fear to 31N...
     Gale Friday.
     Storm Friday night.
.ANZ935...Outer Waters from Cape Fear to 31N...
     Gale Friday into Friday night. 
     Gale Possible Saturday.

$$

.Forecaster Musonda. Ocean Prediction Center.
Last Update:07:44Z, 18 April 2019
Updates: Four times per day

FZNT21 KWBC 180820
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
420 AM EDT Thu Apr 18 2019

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.

ANZ898-182145-
420 AM EDT Thu Apr 18 2019

.SYNOPSIS FOR NEW ENGLAND WATERS...High pressure across the 
waters will move E of the area today. A warm front will lift N 
across the region today into Fri. A strong cold front will 
approach the coast Fri and Fri night, move slowly E across the 
waters Sat into Sun, and be E of the area Sun night. Another cold
front will approach the New England coast Mon and Mon night.

$$

ANZ800-182145-
Gulf of Maine to the Hague Line-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...SW winds less than 10 kt, becoming S, then increasing to
15 to 25 kt. Seas 3 to 5 ft.
.TONIGHT...S winds 20 to 30 kt. Seas building to 7 to 12 ft. Chance
of rain and areas of fog with VSBY 1 nm or less.
.FRI...SW winds 25 to 30 kt, becoming 25 to 35 kt. Seas 7 to 12 ft.
Areas of fog with VSBY 1 nm or less.
.FRI NIGHT...S to SW winds 25 to 35 kt, becoming S 25 to 30 kt.
Seas 7 to 12 ft. Areas of fog with VSBY 1 nm or less.
.SAT...S winds 25 to 30 kt. Seas 7 to 11 ft.
.SAT NIGHT...S winds 20 to 30 kt. Seas 7 to 12 ft.
.SUN...S winds 20 to 30 kt. Seas 7 to 13 ft.
.SUN NIGHT...S winds 15 to 25 kt, becoming SW 15 to 20 kt. Seas 7
to 12 ft.
.MON...SW winds 15 to 20 kt. Seas subsiding to 5 to 9 ft.
.MON NIGHT...SW winds 15 to 20 kt. Seas 4 to 8 ft.

$$

ANZ805-182145-
Georges Bank between Cape Cod and 68W north of 1000 FM-
420 AM EDT Thu Apr 18 2019

...GALE FORCE WINDS POSSIBLE SAT NIGHT...

.TODAY...E to SE winds 5 to 15 kt, becoming SE 10 to 20 kt. Seas 3
to 6 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 6 to
11 ft. Areas of fog with VSBY 1 nm or less.
.FRI...S winds 25 to 30 kt. Seas 7 to 11 ft. Areas of fog with VSBY
1 nm or less.
.FRI NIGHT...S winds 25 to 30 kt. Seas building to 8 to 13 ft.
Areas of fog with VSBY 1 nm or less.
.SAT...S winds 25 to 30 kt. Seas building to 9 to 15 ft.
.SAT NIGHT...S winds 25 to 35 kt. Seas 9 to 16 ft.
.SUN...S winds 20 to 30 kt. Seas 9 to 16 ft.
.SUN NIGHT...SW winds diminishing to 10 to 20 kt. Seas subsiding to
7 to 12 ft.
.MON...SW winds 10 to 20 kt. Seas subsiding to 6 to 9 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas 5 to 8 ft.

$$

ANZ900-182145-
Georges Bank between 68W and the Hague Line-
420 AM EDT Thu Apr 18 2019

.TODAY...Variable winds less than 10 kt, becoming E to SE, then
becoming SE 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 7 to
11 ft. Areas of fog with VSBY 1 nm or less.
.FRI...S to SW winds 25 to 30 kt. Seas 8 to 11 ft. Areas of fog
with VSBY 1 nm or less.
.FRI NIGHT...S winds 25 to 30 kt. Seas 9 to 12 ft. Areas of fog
with VSBY 1 nm or less.
.SAT...S winds 25 to 30 kt. Seas becoming 11 to 13 ft.
.SAT NIGHT...S winds 25 to 30 kt. Seas 11 to 14 ft.
.SUN...S winds 20 to 30 kt. Seas 12 to 15 ft.
.SUN NIGHT...S winds 20 to 30 kt, becoming SW 5 to 15 kt. Seas
becoming 9 to 14 ft.
.MON...SW winds 10 to 20 kt. Seas subsiding to 7 to 10 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas subsiding to 6 to 8 ft.

$$

ANZ810-182145-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...SE winds 15 to 25 kt. Seas 5 to 8 ft.
.TONIGHT...Winds veering to S to SW 20 to 30 kt. Seas becoming 7 to
9 ft. Areas of fog with VSBY 1 nm or less.
.FRI...S winds 25 to 30 kt. Seas building to 8 to 12 ft. Areas of
fog with VSBY 1 nm or less.
.FRI NIGHT...S winds 30 to 35 kt, diminishing to 25 to 30 kt. Seas
building to 10 to 14 ft. Areas of fog with VSBY 1 nm or less.
.SAT...S winds 25 to 35 kt. Seas building to 11 to 18 ft.
.SAT NIGHT...S winds 30 to 40 kt. Seas 12 to 19 ft.
.SUN...S to SE winds diminishing to 15 to 25 kt, then becoming S to
SW 10 to 20 kt. Seas subsiding to 9 to 16 ft.
.SUN NIGHT...W to SW winds 10 to 20 kt. Seas subsiding to 8 to 11
ft.
.MON...SW winds 10 to 15 kt, becoming 10 to 20 kt. Seas subsiding
to 6 to 9 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas subsiding to 5 to 7 ft.

$$

ANZ815-182145-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...SE winds 15 to 25 kt. Seas 4 to 8 ft. Areas of fog with
VSBY 1 nm or less.
.TONIGHT...Winds veering to S to SW 20 to 30 kt. Seas building to 6
to 10 ft. Areas of fog with VSBY 1 nm or less.
.FRI...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas building to
8 to 13 ft. Areas of fog with VSBY 1 nm or less.
.FRI NIGHT...S winds 30 to 35 kt. Seas building to 9 to 16 ft.
Areas of fog with VSBY 1 nm or less.
.SAT...S winds 30 to 40 kt. Seas building to 12 to 20 ft.
.SAT NIGHT...S winds 30 to 40 kt, diminishing to 15 to 25 kt. Seas
11 to 19 ft.
.SUN...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas subsiding
to 7 to 13 ft.
.SUN NIGHT...SW winds 15 to 25 kt. Seas subsiding to 6 to 11 ft.
.MON...SW winds diminishing to 10 to 15 kt, then increasing to 15
to 20 kt. Seas subsiding to 4 to 8 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft.

$$

.Forecaster Musonda. Ocean Prediction Center.
Last Update:08:21Z, 18 April 2019
Updates: Four times per day

FZNT22 KWBC 180820
OFFNT2

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
420 AM EDT Thu Apr 18 2019

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.

ANZ899-182145-
420 AM EDT Thu Apr 18 2019

.SYNOPSIS FOR MID ATLC WATERS...A warm front will lift N through
the region today, then move N of the area tonight. A strong cold
front will approach the waters from the W tonight, then move off
the coast Fri and Fri night. The cold front will slowly cross 
the waters Sat into Sun, then clear E of the outer waters Sun 
night. High pressure will build across the waters behind the 
front Sun and Sun night, then persist into Mon night. 

$$

ANZ820-182145-
Hudson Canyon to Baltimore Canyon to 1000 FM-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...S winds 15 to 25 kt. Seas 4 to 8 ft.
.TONIGHT...S winds 20 to 30 kt. Seas building to 6 to 10 ft. Areas
of fog with VSBY 1 nm or less.
.FRI...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas building to
8 to 13 ft. Areas of fog with VSBY 1 nm or less.
.FRI NIGHT...S winds 25 to 35 kt. Seas building to 10 to 17 ft.
Areas of fog with VSBY 1 nm or less.
.SAT...S winds 30 to 40 kt. Seas building to 12 to 19 ft.
.SAT NIGHT...S winds diminishing to 15 to 25 kt, then becoming SW
15 to 20 kt. Seas subsiding to 10 to 17 ft.
.SUN...S to SW winds 15 to 25 kt. Seas subsiding to 7 to 12 ft.
.SUN NIGHT...W to SW winds 15 to 25 kt. Seas subsiding to 6 to 10
ft.
.MON...S to SW winds 10 to 20 kt. Seas subsiding to 4 to 7 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas 3 to 6 ft.

$$

ANZ915-182145-
Between 1000FM and 38.5 N west of 69 W-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...E to SE winds 15 to 25 kt, becoming S to SE. Seas 4 to 8
ft.
.TONIGHT...S winds 20 to 30 kt. Seas building to 6 to 10 ft. Areas
of fog with VSBY 1 nm or less.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 14 ft. Areas of
fog with VSBY 1 nm or less.
.FRI NIGHT...S winds 30 to 40 kt. Seas building to 11 to 17 ft.
Areas of fog with VSBY 1 nm or less.
.SAT...S winds 35 to 45 kt. Seas building to 13 to 22 ft.
.SAT NIGHT...S winds 30 to 40 kt. Seas 12 to 21 ft.
.SUN...S to SW winds diminishing to 15 to 25 kt. Seas subsiding to
10 to 16 ft.
.SUN NIGHT...Winds veering to W 15 to 25 kt. Seas subsiding to 7 to
11 ft.
.MON...W winds diminishing to 10 to 15 kt, then becoming SW 10 to
20 kt. Seas subsiding to 6 to 9 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas subsiding to 5 to 7 ft.

$$

ANZ920-182145-
Baltimore Canyon to 69W east of 1000 FM and south of 38.5N to
250 NM offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...
...STORM FORCE WINDS POSSIBLE SAT...

.TODAY...E to SE winds 15 to 25 kt, becoming S. Seas 4 to 8 ft.
.TONIGHT...S winds 20 to 30 kt. Seas building to 6 to 11 ft.
.FRI...S winds 25 to 35 kt. Seas building to 9 to 15 ft.
.FRI NIGHT...S winds 30 to 40 kt. Seas building to 11 to 18 ft.
.SAT...S winds increasing to 35 to 50 kt, then diminishing to 30 to
40 kt. Seas building to 14 to 22 ft.
.SAT NIGHT...S to SW winds 30 to 40 kt. Seas becoming 12 to 21 ft.
.SUN...S to SW winds diminishing to 20 to 30 kt. Seas subsiding to
9 to 16 ft.
.SUN NIGHT...Winds veering to W 15 to 25 kt. Seas subsiding to 7 to
11 ft.
.MON...W to SW winds diminishing to 5 to 15 kt. Seas subsiding to 5
to 8 ft.
.MON NIGHT...S to SW winds 10 to 20 kt. Seas subsiding to 4 to 6 ft.

$$

ANZ905-182145-
East of 69W to the Hague Line between 1000 FM and 39N-
420 AM EDT Thu Apr 18 2019

...GALE FORCE WINDS POSSIBLE SAT NIGHT...

.TODAY...E to NE winds 5 to 15 kt, becoming E to SE 15 to 25 kt.
Seas 3 to 6 ft.
.TONIGHT...Winds veering to S 20 to 30 kt. Seas building to 5 to 9
ft.
.FRI...S winds 25 to 30 kt. Seas building to 7 to 11 ft. Areas of
fog with VSBY 1 nm or less.
.FRI NIGHT...S winds 25 to 30 kt. Seas building to 9 to 13 ft.
Areas of fog with VSBY 1 nm or less.
.SAT...S winds 25 to 30 kt. Seas building to 10 to 15 ft.
.SAT NIGHT...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas
building to 11 to 17 ft.
.SUN...S winds 25 to 35 kt. Seas 12 to 16 ft.
.SUN NIGHT...S winds 25 to 35 kt, becoming S to SW 10 to 20 kt.
Seas subsiding to 9 to 14 ft.
.MON...W to SW winds 5 to 15 kt. Seas subsiding to 7 to 11 ft.
.MON NIGHT...S to SW winds 5 to 15 kt. Seas subsiding to 5 to 7 ft.

$$

ANZ910-182145-
East of 69W and south of 39N to 250 NM offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...E winds 10 to 15 kt, becoming E to SE 10 to 20 kt, then
becoming S to SE 15 to 25 kt. Seas 3 to 6 ft.
.TONIGHT...S winds 20 to 30 kt. Seas building to 6 to 10 ft.
.FRI...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas building to
7 to 12 ft.
.FRI NIGHT...S winds 25 to 35 kt. Seas building to 10 to 14 ft.
.SAT...S winds 30 to 40 kt. Seas building to 11 to 17 ft.
.SAT NIGHT...S winds 30 to 40 kt. Seas 11 to 17 ft.
.SUN...S winds 30 to 40 kt. Seas 11 to 16 ft.
.SUN NIGHT...S to SW winds diminishing to 20 to 30 kt, then
becoming W 10 to 20 kt. Seas subsiding to 9 to 14 ft.
.MON...W to NW winds 5 to 15 kt, diminishing to less than 10 kt.
Seas subsiding to 6 to 10 ft.
.MON NIGHT...Variable winds less than 10 kt, becoming S to SW. Seas
subsiding to 5 to 6 ft.

$$

ANZ825-182145-
Baltimore Canyon to Cape Charles Light to 100 NM offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...SE winds 10 to 20 kt, becoming S 10 to 15 kt, then
increasing to 15 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 5 to
9 ft.
.FRI...S winds 25 to 35 kt. Seas building to 7 to 12 ft. Areas of
fog with VSBY 1 nm or less.
.FRI NIGHT...S winds increasing to 35 to 45 kt. Seas building to 11
to 19 ft. Areas of fog with VSBY 1 nm or less.
.SAT...S winds 30 to 40 kt, diminishing to 20 to 30 kt. Seas 12 to
20 ft.
.SAT NIGHT...S to SW winds 20 to 30 kt. Seas subsiding to 8 to 13
ft.
.SUN...W to SW winds 20 to 30 kt. Seas subsiding to 6 to 11 ft.
.SUN NIGHT...W to SW winds diminishing to 5 to 15 kt. Seas
subsiding to 4 to 8 ft.
.MON...S to SW winds 10 to 15 kt. Seas subsiding to 3 to 6 ft.
.MON NIGHT...S winds 10 to 15 kt, becoming SW. Seas 3 to 5 ft.

$$

ANZ828-182145-
Cape Charles Light to Currituck Beach Light to 100 NM offshore-
420 AM EDT Thu Apr 18 2019

...STORM WARNING...

.TODAY...S winds 5 to 10 kt, becoming S to SW 10 to 20 kt. Seas 3
to 6 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 6 to
10 ft.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 14 ft.
.FRI NIGHT...S winds 30 to 40 kt, increasing to 35 to 50 kt. Seas
building to 13 to 22 ft.
.SAT...S to SW winds 35 to 45 kt, diminishing to 20 to 30 kt. Seas
13 to 21 ft.
.SAT NIGHT...SW winds 20 to 30 kt. Seas subsiding to 8 to 13 ft.
.SUN...W to SW winds 20 to 30 kt. Seas subsiding to 6 to 11 ft.
.SUN NIGHT...W winds diminishing to 10 to 20 kt, then becoming W to
SW 5 to 15 kt. Seas subsiding to 5 to 9 ft.
.MON...S to SW winds 5 to 15 kt. Seas subsiding to 3 to 6 ft.
.MON NIGHT...S winds 5 to 15 kt, becoming SW 10 to 15 kt. Seas 3 to
5 ft.

$$

ANZ925-182145-
Baltimore Canyon to Hatteras Canyon between 100 NM and 250 NM
offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...
...STORM FORCE WINDS POSSIBLE SAT...

.TODAY...S to SE winds 10 to 20 kt. Seas 3 to 6 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 7 to
11 ft.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 14 ft.
.FRI NIGHT...S winds increasing to 35 to 45 kt. Seas building to 12
to 20 ft.
.SAT...S winds 35 to 50 kt, diminishing to 30 to 40 kt. Seas
building to 13 to 22 ft.
.SAT NIGHT...S to SW winds 25 to 35 kt, becoming SW 20 to 30 kt.
Seas subsiding to 12 to 20 ft.
.SUN...SW winds 20 to 30 kt, becoming W 15 to 25 kt. Seas subsiding
to 9 to 12 ft.
.SUN NIGHT...W winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
subsiding to 6 to 10 ft.
.MON...W to SW winds 5 to 15 kt. Seas subsiding to 5 to 8 ft.
.MON NIGHT...S to SW winds 5 to 15 kt. Seas subsiding to 4 to 5 ft.

$$

ANZ830-182145-
Currituck Beach Light to Cape Hatteras to 100 NM offshore-
420 AM EDT Thu Apr 18 2019

...STORM WARNING...

.TODAY...SW winds 10 to 15 kt, becoming S to SW 10 to 20 kt. Seas 3
to 6 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 6 to
10 ft.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 14 ft.
.FRI NIGHT...S winds 30 to 40 kt, increasing to 35 to 50 kt. Seas
building to 13 to 22 ft.
.SAT...S winds 35 to 45 kt, becoming SW 15 to 25 kt. Seas subsiding
to 12 to 20 ft.
.SAT NIGHT...SW winds 20 to 30 kt. Seas subsiding to 7 to 13 ft.
.SUN...W to SW winds 20 to 30 kt. Seas subsiding to 6 to 11 ft.
.SUN NIGHT...W winds becoming 10 to 20 kt, then diminishing to 5 to
15 kt. Seas subsiding to 5 to 9 ft.
.MON...W winds 5 to 10 kt, becoming S to SW 5 to 15 kt. Seas
subsiding to 3 to 6 ft.
.MON NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft.

$$

ANZ833-182145-
Cape Hatteras to Cape Fear to 100 NM Offshore.-
420 AM EDT Thu Apr 18 2019

...STORM WARNING...

.TODAY...SW winds 10 to 15 kt, becoming S 5 to 15 kt, then
increasing to 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 5 to
9 ft.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 14 ft.
.FRI NIGHT...S winds becoming 35 to 45 kt, then increasing to 40 to
50 kt. Seas building to 13 to 21 ft. Scattered showers.
.SAT...S to SW winds diminishing to 30 to 40 kt, then becoming SW
20 to 25 kt. Seas subsiding to 12 to 19 ft.
.SAT NIGHT...W to SW winds 20 to 30 kt. Seas subsiding to 7 to 12
ft.
.SUN...W to SW winds 20 to 30 kt. Seas 6 to 11 ft.
.SUN NIGHT...W winds becoming 15 to 20 kt, then diminishing to 10
to 15 kt. Seas subsiding to 5 to 9 ft.
.MON...W to SW winds 5 to 10 kt. Seas subsiding to 3 to 6 ft.
.MON NIGHT...SW winds 5 to 15 kt, becoming W 10 to 15 kt. Seas 3 to
4 ft.

$$

ANZ930-182145-
Hatteras Canyon to Cape Fear between 100 NM and 250 NM offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 6
ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 6 to
10 ft.
.FRI...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas building to
8 to 14 ft.
.FRI NIGHT...S winds 30 to 40 kt. Seas building to 11 to 19 ft.
.SAT...S winds 35 to 45 kt. Seas 12 to 20 ft.
.SAT NIGHT...S to SW winds diminishing to 25 to 35 kt, then
becoming SW 20 to 30 kt. Seas subsiding to 9 to 15 ft.
.SUN...SW winds 15 to 25 kt, becoming W. Seas subsiding to 7 to 11
ft.
.SUN NIGHT...W winds 10 to 20 kt, becoming NW 5 to 15 kt. Seas 6 to
10 ft.
.MON...N winds less than 10 kt, becoming variable. Seas subsiding
to 4 to 7 ft.
.MON NIGHT...Variable winds 5 to 15 kt, diminishing to less than 10
kt. Seas 4 to 5 ft.

$$

ANZ835-182145-
Cape Fear to 31N to 1000 FM-
420 AM EDT Thu Apr 18 2019

...STORM WARNING...

.TODAY...S winds 10 to 15 kt, becoming S to SE 10 to 20 kt. Seas 3
to 5 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 5 to
9 ft.
.FRI...S winds increasing to 30 to 40 kt. Seas building to 9 to 15
ft.
.FRI NIGHT...S winds increasing to 40 to 50 kt. Seas building to 12
to 20 ft. Scattered showers and TSTMs.
.SAT...Winds diminishing to W to SW 20 to 30 kt. Seas subsiding to
9 to 15 ft.
.SAT NIGHT...W winds 20 to 30 kt. Seas subsiding to 7 to 11 ft.
.SUN...W winds 15 to 25 kt. Seas 6 to 10 ft.
.SUN NIGHT...W to SW winds 10 to 20 kt, becoming W 5 to 15 kt. Seas
subsiding to 4 to 7 ft.
.MON...W winds less than 10 kt, becoming S to SW. Seas subsiding to
3 to 5 ft.
.MON NIGHT...SW winds 5 to 15 kt. Seas 2 to 4 ft.

$$

ANZ935-182145-
Cape Fear to 31N east of 1000 FM to 250 NM offshore-
420 AM EDT Thu Apr 18 2019

...GALE WARNING...

.TODAY...S to SE winds 10 to 15 kt, becoming SE 15 to 20 kt. Seas 3
to 5 ft.
.TONIGHT...S winds increasing to 20 to 30 kt. Seas building to 5 to
8 ft.
.FRI...S winds 25 to 35 kt. Seas building to 8 to 13 ft.
.FRI NIGHT...S winds increasing to 35 to 45 kt. Seas building to 11
to 18 ft.
.SAT...S to SW winds 30 to 40 kt. Seas 10 to 17 ft.
.SAT NIGHT...W to SW winds diminishing to 20 to 30 kt. Seas
subsiding to 8 to 12 ft.
.SUN...W winds 15 to 25 kt. Seas subsiding to 6 to 10 ft.
.SUN NIGHT...W winds 10 to 20 kt, becoming NW 5 to 15 kt. Seas
subsiding to 4 to 8 ft.
.MON...N to NE winds less than 10 kt, becoming variable. Seas 4 to
6 ft.
.MON NIGHT...Variable winds 5 to 15 kt, diminishing to less than 10
kt. Seas 3 to 5 ft.

$$

.Forecaster Musonda. Ocean Prediction Center.
Last Update:08:21Z, 18 April 2019
Updates: Four times per day

FZNT01 KWBC 180934
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1030 UTC THU APR 18 2019 

CCODE/1:31:04:01:00/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. 

METAREA IV BULLETIN WILL ONLY BE BROADCAST FROM THE INMARSAT 
AOE SATELLITE. PLEASE ENSURE YOUR RECEIVER IS POINTED 
CORRECTLY. 

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 
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.SHTML 
(LOWERCASE EXCEPT CAPITAL A IN ATL). 

SECURITE 

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

SYNOPSIS VALID 0600 UTC APR 18. 
24 HOUR FORECAST VALID 0600 UTC APR 19. 
48 HOUR FORECAST VALID 0600 UTC APR 20. 

.WARNINGS. 

...STORM WARNING... 
.24 HOUR FORECAST LOW INLAND NEAR 37N86W 994 MB. OVER FORECAST 
WATERS WITHIN 900 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 10 
FT. 
.36 HOUR FORECAST LOW INLAND NEAR 41N83W 992 MB. WITHIN 840 NM 
SE QUADRANT WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. 
.48 HOUR FORECAST LOW INLAND NEAR 42N80W 994 MB. WITHIN 120 NM E 
OF A LINE FROM 37N75W TO 31N77W WINDS 40 TO 50 KT. SEAS 14 TO 20 
FT. ELSEWHERE WITHIN 840 NM SE QUADRANT WINDS 25 TO 40 KT. SEAS 
9 TO 14 FT.

...GALE WARNING... 
.COMPLEX LOW WITH MEAN POSITION NEAR 54N42W 982 MB MOVING NE 15 
KT. OVER ICE FREE FORECAST WATERS WITHIN 720 NM SE...660 NM 
SW...AND 600 NM NW QUADRANTS WINDS 30 TO 45 KT. SEAS 12 TO 25 
FT. .24 HOUR FORECAST LOW 59N37W 988 MB. OVER ICE FREE FORECAST 
WATERS WITHIN 420 NM SW AND 480 NM NW QUADRANTS WINDS 30 TO 45 
KT. SEAS 12 TO 22 FT. 
.48 HOUR FORECAST LOW N OF AREA. FROM 56N TO 61N E OF 43W WINDS 
30 TO 45 KT. SEAS 10 TO 20 FT. 

...GALE WARNING...
.24 HOUR FORECAST LOW INLAND NEAR 49N73W 999 MB. OVER FORECAST 
WATERS WITHIN 780 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 
FT.
.30 HOUR FORECAST INLAND NEAR 50N69W 1000 MB. WITHIN 660 NM SE 
QUADRANT WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 58N55W 999 MB. BETWEEN 240 NM AND 660 NM 
SE AND 660 NM AND 960 NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 9 
TO 14 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 37N39W 1014 MB. OVER FORECAST WATERS 
WITHIN 90 NM SE OF A LINE FROM 38N35W TO 33N41W WINDS TO 25 KT. 
SEAS 10 TO 13 FT.
.48 HOUR FORECAST LOW 39N36W 1013 MB. WITHIN 240 NM N...480 NM 
SW...AND 240 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS 
N OF 62N AND W OF GREENLAND. 
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE 
FROM 65N57W TO 63N52W.
.48 HOUR FORECAST LIGHT FREEZING SPRAY NW AND W OF A LINE FROM 
65N52W TO 64N56W.

.SYNOPSIS AND FORECAST. 

.48 HOUR FORECAST NEW LOW 63N57W 997 MB. WITHIN 180 NM E 
QUADRANT WINDS TO 25 KT. SEAS LESS THAN 8 FT.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM 
OVER FORECAST WATERS N OF 40N BETWEEN 66W AND 70W.
.48 HOUR FORECAST DENSE FOG OVER ICE FREE FORECAST WATERS N OF A 
LINE FROM 40N71W TO 43N61W TO 44N51W INCLUDING THE GULF OF ST 
LAWRENCE. 

.HIGH 33N68W 1023 MB MOVING E 15 KT. 
.24 HOUR FORECAST HIGH DISSIPATED. 

.HIGH 41N66W 1026 MB MOVING E 15 KT. 
.24 HOUR FORECAST HIGH 41N58W 1031 MB. 
.48 HOUR FORECAST HIGH 38N53W 1034 MB. 

.FORECASTER BELL. 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 0600 UTC THU APR 18.
24 HOUR FORECAST VALID 0600 UTC FRI APR 19.
48 HOUR FORECAST VALID 0600 UTC SAT APR 20.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 24 HOUR FORECAST N OF 27N W OF 76W SE TO S WINDS 20 TO 30 
KT. SEAS TO 8 FT.
.36 HOUR FORECAST N OF 28N W OF 77W S WINDS 30 TO 40 KT. SEAS 10 
TO 14 FT. ELSEWHERE WITHIN AREA BOUNDED BY 31N81W TO 31N71W TO 
26N75W TO 24N80W TO 31N81W SE TO S WINDS 20 TO 30 KT. SEAS 8 TO 
10 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N79W TO 23N81W. N OF 28N E 
OF FRONT TO 75W S WINDS 30 TO 40 KT. SEAS 9 TO 16 FT. ELSEWHERE 
N OF 25N E OF FRONT TO 68W SE TO S WINDS 20 TO 30 KT. SEAS TO 11 
FT. W OF FRONT WINDS 20 TO 25 KT. SEAS 8 TO 14 FT.

...GULF OF MEXICO GALE WARNING...
.N OF 21N W OF 89W SE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST COLD FRONT FROM 30N92W TO 19N95W. S OF 21N W 
OF 95W NW WINDS 25 TO 35 KT. SEAS LESS THAN 8 FT. N OF 26N E OF 
THE FRONT TO 88W S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST COLD FRONT FROM 30N89W TO 18N94W. S OF 21N W 
OF 94W NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. N OF 22N E OF 
FRONT S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. N OF 23N W OF 
FRONT NW WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST COLD FRONT FROM 26N81W TO 21N85W. N OF 26N E 
OF 90W 23N83W TO 29N83W NW TO N WINDS 20 TO 25 KT. SEAS 9 TO 11 
FT. ELSEWHERE E OF 91W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN W 
TO NW SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N49W TO 28N58W THEN STATIONARY TO 
26N71W. N OF LINE FROM 31N343W TO 29N50W 30N59W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N43W TO 25N49W. N OF 26N E 
OF 57W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N37W TO 24N42W. N OF LINE 
FROM 30N35W TO 23N51W TO 23N65W WINDS 20 KT OR LESS. SEAS 8 TO 
10 FT IN NW TO N SWELL.

.ATLC 24 HOUR FORECAST S OF 22N BETWEEN 71W AND 75W E TO SE 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST S OF 22N BETWEEN 70W AND 73W SE WINDS 20 TO 25 
KT. SEAS TO 8 FT.

.CARIBBEAN FROM 10.5N TO 13N BETWEEN 70W AND 77W...INCLUDING THE 
GULF OF VENEZUELA...NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT BETWEEN 
74W AND 77W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN 24 HOUR FORECAST S OF 19N BETWEEN 84W AND 88W SE 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.
Last Update:09:35Z, 18 April 2019
Updates: Four times per day