Atlantic Text Briefing Package

[Printable Version]

AGNT40 KWNM 221928
MIMATN

.Marine Weather Discussion for N Atlantic Ocean 
.NWS Ocean Prediction Center Washington DC 
330 PM EDT SUN 22 OCT 2017 

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

This mornings offshore Ascat overpasses returned winds to 20 kt 
across the zones south of Cape Fear. Also the 1520Z pass 
indicated east to northeast winds as high as 20 to 25 kt just 
off the Maine coast. None of the 12Z models were well 
initialized with these higher winds across coastal Maine. Recent 
buoy observations suggest that this gradient has relaxed 
somewhat the past few hours. Over the near term the 12Z models 
are in good agreement that the high pressure ridge across the 
waters will continue to drift east through Mon. The weak surface 
low and warm front northeast of Cape Cod will further weaken 
while lifting north this evening. Will update the tonight/Mon 
wind grids with the 12Z GFS which is well supported by the 
remaining guidance. 

The 12Z models are then consistent that the first mid/upper 
level trough will lift northeast just inland of the Mid Atlantic 
and through New England while weakening Mon/Mon night before a 
second more amplified trough digs southeast toward the Mid 
Atlantic coast Tue through Wed. This upper feature will support 
a strong cold front that will slowly approach the Mid Atlantic 
and New England coasts Mon through Tue, and will be the weather 
feature which will have the most impact on the offshore waters 
through the forecast period. The models continue to diverge with 
the details of the strong frontal passage and potential low 
development(s) across the offshore waters Tue night through Thu. 
 The 12Z GFS/ECMWF/UKMET have come into much better agreement 
with the timing of the cold front at least through Wed. By later 
Wed night and Thu, the UKMET becomes more progressive than the 
GFS, with the ECMWF offering a compromise between the two. The 
models also differ with how widespread (or limited) any pre 
frontal gales may be, specifically  determining how much of the 
45 to 55 kt low level jet (as shown by the 12Z GFS and 12Z 
ECMWF) will mix to the surface. The 12Z ECMWF also offers a 
compromise between the GFS, which is the strongest of the models 
with the southerly winds ahead of the front, and the weaker 
UKMET. The gales are likely to become more widespread ahead of 
the front across the northern outer NT2 and eastern NT1 zones as 
the upper trough becomes negatively tilted off the coast late 
Wed and Wed night. Again the 12Z ECMWF seems to have a decent 
handle on this. The gales should shift east of the waters late 
Thu, and late in the week the models are consistent that another 
high pressure ridge will exit the Mid Atlantic coast. Will 
populate the wind grids with the 12Z ECMWF and make some minor 
edits to keep continuity with the previous gale hazards. We have 
much more confidence with the pre frontal southerly gales 
forecast across the warmer northern NT2 waters Wed/Wed night 
than those across the colder waters near Georges Bank at that 
time.     

.Seas...Both the 12Z Wavewatch III and 12Z ECMWF WAM are equally 
well initialized with the west Atlantic wave heights this 
afternoon, and also are in good agreement through Mon night. By 
Tue night through Thu night, with the GFS and ECMWF differing 
with the increasing southerly winds, the 12Z WW3 is anywhere 
from 3 to 6 ft higher than the 12Z ECMWF WAM, and generally 
looks too high in this type of southerly flow regime. Will be 
populating with an even blend of the WW3/ECMWF WAM through Mon 
before transitioning solely to the lower ECMWF WAM Mon night 
through the remainder of the forecast period.    

.Extratropical Storm Surge Guidance...N/A. 

.WARNINGS...Preliminary. 

.NT1 New England Waters...
.ANZ800...Gulf of Maine...
     Gale Possible Wednesday night.
.ANZ805...Georges Bank west of 68W...
     Gale Possible Wednesday night.
.ANZ900...Georges Bank east of 68W...
     Gale Possible Wednesday night into Thursday. 

.NT2 Mid-Atlantic Waters...
.ANZ920...Baltimore Canyon to the Great South Channel...
     Gale Possible Wednesday into Wednesday night. 
.ANZ905...The Great South Channel to the Hague Line...
     Gale Possible Wednesday night into Thursday. 
.ANZ910...East of the Great South Channel and south of 39N...
     Gale Possible Wednesday into Wednesday night. 

$$ 

.Forecaster Clark. Ocean Prediction Center.
Last Update:19:29Z, 22 October 2017
Updates: Four times per day

FZNT21 KWBC 222031
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
431 PM EDT Sun Oct 22 2017

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.

ANZ898-230845-
431 PM EDT Sun Oct 22 2017

.SYNOPSIS FOR NEW ENGLAND WATERS...A high pres ridge will move E
across the S waters tonight, while a warm front lifts N across 
the Gulf of Maine. A strong cold front will approach from the W 
Mon through Tue night, then slowly move E over the waters Wed 
through Thu. A developing low is expected to move N along the 
front and pass across the waters Wed night into Thu. Another 
ridge will build E across the waters Thu night through Fri 
night.

$$

ANZ800-230845-
Gulf of Maine to the Hague Line-
431 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED NIGHT...

.TONIGHT...E to SE winds 5 to 15 kt, becoming S to SE. Seas 2 to
3 ft. 
.MON...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 2 to
3 ft. 
.MON NIGHT...S winds 15 to 20 kt. Seas building to 3 to 5 ft. 
.TUE...S winds 15 to 25 kt. Seas building to 5 to 7 ft. Areas of
fog with VSBY 1 nm or less. 
.TUE NIGHT...S winds 20 to 30 kt. Seas building to 8 to 10 ft. 
.WED...S winds 25 to 30 kt. Seas building to 10 to 13 ft. 
.WED NIGHT...S winds 25 to 35 kt. Seas 9 to 16 ft. 
.THU...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas
subsiding to 8 to 12 ft. 
.THU NIGHT...W winds 20 to 30 kt, diminishing to 10 to 20 kt.
Seas 8 to 12 ft. 
.FRI...NW winds 5 to 15 kt, becoming variable. Seas subsiding to
4 to 7 ft. 
.FRI NIGHT...S winds less than 10 kt, becoming SW. Seas 4 to 6 
ft. 

$$

ANZ805-230845-
Georges Bank between Cape Cod and 68W north of 1000 fm-
431 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED NIGHT...

.TONIGHT...S to SE winds 5 to 10 kt. Seas 2 to 3 ft. 
.MON...S winds 10 to 15 kt. Seas 2 to 4 ft. 
.MON NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...S winds 15 to 25 kt. Seas building to 6 to 8 ft. 
.TUE NIGHT...S winds 20 to 25 kt. Seas building to 8 to 11 ft. 
.WED...S winds 25 to 30 kt. Seas building to 10 to 15 ft. 
.WED NIGHT...S winds 25 to 35 kt, diminishing to S to SW 10 to 
20 kt. Seas 10 to 16 ft.
.THU...W to SW winds 15 to 25 kt. Seas subsiding to 9 to 12 ft. 
.THU NIGHT...W winds 15 to 25 kt, becoming N to NW 5 to 15 kt.
Seas subsiding to 7 to 9 ft. 
.FRI...N winds less than 10 kt, becoming variable. Seas 
subsiding to 5 to 6 ft. 
.FRI NIGHT...Variable winds less than 10 kt. Seas 4 to 5 ft. 

$$

ANZ900-230845-
Georges Bank between 68W and the Hague Line-
431 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED NIGHT...

.TONIGHT...S winds less than 5 kt, becoming SE, then, becoming
S. Seas 2 to 3 ft. 
.MON...S winds 5 to 15 kt. Seas 2 to 3 ft. 
.MON NIGHT...S winds 10 to 20 kt. Seas building to 3 to 5 ft. 
.TUE...S winds 15 to 20 kt. Seas building to 5 to 7 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas building to 8 to 10 ft. 
.WED...S winds 20 to 30 kt. Seas building to 10 to 13 ft. 
.WED NIGHT...S winds 25 to 35 kt. Seas building to 14 to 17 ft. 
.THU...S winds 30 to 40 kt, becoming W 15 to 20 kt. Seas 14 to 
19 ft, subsiding to 11 to 13 ft. 
.THU NIGHT...W winds 15 to 25 kt, becoming N to NW 5 to 15 kt.
Seas subsiding to 8 to 10 ft. 
.FRI...N winds 5 to 10 kt, becoming 5 to 15 kt. Seas subsiding 
to 5 to 6 ft. 
.FRI NIGHT...N to NE winds less than 10 kt. Seas 4 to 5 ft. 

$$

ANZ810-230845-
South of New England between the Great South Channel and Montauk
Point to 1000 fm-
431 PM EDT Sun Oct 22 2017

.TONIGHT...S to SE winds less than 10 kt. Seas 2 to 3 ft. 
.MON...S to SE winds 10 to 15 kt. Seas 2 to 4 ft. 
.MON NIGHT...S winds 15 to 20 kt. Seas building to 4 to 6 ft. 
.TUE...S winds 20 to 25 kt. Seas building to 6 to 9 ft. 
.TUE NIGHT...S winds 20 to 25 kt. Seas 8 to 11 ft. 
.WED...S winds 15 to 25 kt. Seas building to 9 to 15 ft. 
.WED NIGHT...S winds 20 to 30 kt, becoming SW 10 to 20 kt. Seas
becoming 8 to 13 ft. 
.THU...W to SW winds 15 to 25 kt. Seas 9 to 12 ft. 
.THU NIGHT...W to NW winds 10 to 20 kt, becoming N to NW 5 to
15 kt. Seas subsiding to 6 to 8 ft. 
.FRI...Variable winds less than 10 kt. Seas 5 to 7 ft. 
.FRI NIGHT...Variable winds less than 5 kt. Seas 4 to 5 ft. 

$$

ANZ815-230845-
South of Long Island between Montauk Point and Sandy Hook to
1000 fm-
431 PM EDT Sun Oct 22 2017

.TONIGHT...S winds 5 to 10 kt, becoming SE. Seas 2 to 3 ft. 
.MON...SE winds 5 to 10 kt, becoming S to SE 10 to 15 kt. Seas
2 to 4 ft. 
.MON NIGHT...S winds 15 to 25 kt. Seas building to 5 to 7 ft. 
.TUE...S winds 20 to 25 kt. Seas building to 8 to 10 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas 7 to 11 ft. 
.WED...S winds 15 to 25 kt. Seas 7 to 12 ft. 
.WED NIGHT...S to SW winds 10 to 20 kt, becoming W to NW 5 to
15 kt. Seas 6 to 11 ft. 
.THU...W winds 15 to 25 kt. Seas 6 to 10 ft. 
.THU NIGHT...W to NW winds 5 to 15 kt. Seas subsiding to 5 to 7 
ft.
.FRI...Variable winds less than 5 kt. Seas subsiding to 4 to 5 
ft. 
.FRI NIGHT...S to SE winds less than 10 kt. Seas 4 to 5 ft. 

$$

.Forecaster Clark. Ocean Prediction Center.
Last Update:20:32Z, 22 October 2017
Updates: Four times per day

FZNT22 KWBC 222034
OFFNT2

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
434 PM EDT Sun Oct 22 2017

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.

ANZ899-230845-
434 PM EDT Sun Oct 22 2017

.SYNOPSIS FOR MID ATLC WATERS...A high pres ridge will move
slowly E across the waters tonight and Mon, then shift E of the 
area Mon night into Tue. A strong cold front will approach from 
the W Mon through Tue, drift offshore Tue night, then slowly move
E across the waters Wed through Thu. Low pres is expected to 
form along the front E of Cape Hatteras Wed, then pass N across 
the area Wed night. Another ridge will build NE over the waters 
late Thu through Fri night. 

$$

ANZ820-230845-
Hudson Canyon to Baltimore Canyon to 1000 fm-
434 PM EDT Sun Oct 22 2017

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. 
.MON...SE winds 5 to 10 kt, increasing to 10 to 20 kt. Seas 3 to
4 ft. 
.MON NIGHT...S winds 15 to 25 kt. Seas building to 6 to 8 ft. 
.TUE...S winds 20 to 25 kt. Seas building to 8 to 10 ft. 
.TUE NIGHT...S to SW winds 15 to 25 kt. Seas 6 to 11 ft. 
.WED...S winds 15 to 25 kt, becoming SW 5 to 15 kt. Seas 6 to
10 ft. 
.WED NIGHT...W to SW winds 10 to 20 kt, becoming W to NW. Seas
6 to 10 ft. 
.THU...W winds 15 to 25 kt. Seas 6 to 10 ft. 
.THU NIGHT...W to NW winds 10 to 15 kt, becoming N to NW. Seas
subsiding to 4 to 6 ft. 
.FRI...Variable winds less than 10 kt. Seas 4 to 5 ft. 
.FRI NIGHT...S to SE winds less than 10 kt. Seas 3 to 5 ft. 

$$

ANZ915-230845-
Between 1000 fm and 38.5N west of 69W-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. 
.MON...SE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to
4 ft. 
.MON NIGHT...S to SE winds 15 to 25 kt. Seas building to 5 to 8 
ft.
.TUE...S winds 20 to 25 kt. Seas building to 8 to 10 ft. 
.TUE NIGHT...S winds 20 to 30 kt. Seas 8 to 12 ft. 
.WED...S winds 20 to 30 kt. Seas 9 to 15 ft. 
.WED NIGHT...S to SW winds 20 to 30 kt, becoming W to SW 10 to 
20 kt. Seas 9 to 16 ft.
.THU...W winds 15 to 25 kt. Seas 8 to 12 ft. 
.THU NIGHT...NW winds 15 to 25 kt, becoming N to NW 5 to 10 kt.
Seas subsiding to 6 to 8 ft. 
.FRI...N to NE winds less than 10 kt. Seas subsiding to 5 to 6 
ft. 
.FRI NIGHT...E to NE winds less than 10 kt, becoming variable.
Seas 4 to 5 ft. 

$$

ANZ920-230845-
Baltimore Canyon to 69W east of 1000 fm and south of 38.5N to
250 nm offshore-
434 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED...

.TONIGHT...E winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas
3 to 4 ft. 
.MON...SE winds 10 to 15 kt, increasing to 15 to 25 kt. Seas
building to 4 to 6 ft. 
.MON NIGHT...S to SE winds 15 to 25 kt. Seas building to 6 to 9 
ft. 
.TUE...S winds 20 to 30 kt. Seas building to 9 to 11 ft. 
Scattered showers and TSTMs. 
.TUE NIGHT...S winds 20 to 30 kt. Seas 9 to 12 ft. 
.WED...S winds 25 to 35 kt. Seas 9 to 16 ft. 
.WED NIGHT...S winds 25 to 35 kt, diminishing to W to SW 10 to 
20 kt. Seas becoming 8 to 14 ft.
.THU...W winds 15 to 25 kt. Seas subsiding to 7 to 10 ft. 
.THU NIGHT...NW winds 10 to 20 kt, becoming N 5 to 10 kt. Seas
subsiding to 6 to 8 ft. 
.FRI...N to NE winds less than 10 kt. Seas subsiding to 4 to 6 
ft. 
.FRI NIGHT...E to NE winds 5 to 10 kt. Seas 3 to 5 ft. 

$$

ANZ905-230845-
East of 69W to the Hague Line between 1000 fm and 39N-
434 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED NIGHT...

.TONIGHT...SE winds less than 10 kt, increasing to 5 to 15 kt.
Seas 2 to 3 ft. 
.MON...SE winds 5 to 15 kt. Seas 2 to 4 ft. 
.MON NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...S winds 15 to 25 kt. Seas building to 5 to 8 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas building to 8 to 11 ft. 
.WED...S winds 20 to 30 kt. Seas building to 10 to 14 ft. 
.WED NIGHT...S winds 25 to 30 kt, becoming 25 to 35 kt. Seas
building to 12 to 17 ft. 
.THU...S winds 25 to 35 kt, becoming S to SW 20 to 25 kt. Seas 
11 to 19 ft. 
.THU NIGHT...W to NW winds 15 to 25 kt, becoming N 5 to 15 kt.
Seas subsiding to 8 to 10 ft. 
.FRI...N winds 5 to 15 kt. Seas subsiding to 5 to 7 ft. 
.FRI NIGHT...N to NE winds 5 to 15 kt. Seas 4 to 6 ft. 

$$

ANZ910-230845-
East of 69W and south of 39N to 250 nm offshore-
434 PM EDT Sun Oct 22 2017

...GALE FORCE WINDS POSSIBLE WED...

.TONIGHT...E to SE winds 5 to 10 kt, becoming SE 10 to 15 kt.
Seas 3 to 4 ft. 
.MON...SE winds 5 to 15 kt, increasing to 15 to 20 kt. Seas 2 to
4 ft. 
.MON NIGHT...S to SE winds 15 to 20 kt. Seas building to 4 to 7 
ft.
.TUE...S winds 15 to 25 kt. Seas building to 6 to 10 ft. 
.TUE NIGHT...S winds 20 to 30 kt. Seas building to 9 to 12 ft. 
.WED...S winds 25 to 35 kt, becoming 25 to 30 kt. Seas building 
to 10 to 15 ft. 
.WED NIGHT...S winds 25 to 35 kt. Seas 14 to 17 ft. 
.THU...S to SW winds 20 to 30 kt, becoming W 15 to 25 kt. Seas
11 to 18 ft, subsiding to 9 to 12 ft. 
.THU NIGHT...NW winds 15 to 20 kt, becoming N 5 to 15 kt. Seas
subsiding to 7 to 9 ft. 
.FRI...N winds 5 to 15 kt, becoming NE 10 to 15 kt. Seas
subsiding to 5 to 7 ft. 
.FRI NIGHT...NE winds 5 to 15 kt. Seas subsiding to 4 to 5 ft. 

$$

ANZ825-230845-
Baltimore Canyon to Cape Charles Light to 100 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, becoming SE 10 to 15 kt, then,
becoming S 5 to 10 kt. Seas 2 to 4 ft. 
.MON...SE winds 5 to 15 kt, becoming S 10 to 20 kt. Seas 3 to
5 ft. 
.MON NIGHT...S winds 20 to 25 kt. Seas building to 6 to 9 ft. 
Scattered showers. 
.TUE...S winds 15 to 25 kt. Seas 7 to 10 ft. 
.TUE NIGHT...S to SW winds 15 to 25 kt, diminishing to 5 to
15 kt. Seas 6 to 10 ft. 
.WED...W to SW winds less than 10 kt, becoming S to SW. Seas
4 to 8 ft. 
.WED NIGHT...W to SW winds 10 to 20 kt. Seas 4 to 8 ft. 
.THU...W to NW winds 15 to 25 kt, becoming W 5 to 15 kt. Seas
4 to 7 ft. 
.THU NIGHT...NW winds 5 to 15 kt, becoming N 5 to 10 kt. Seas
3 to 6 ft. 
.FRI...E to NE winds less than 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E to SE winds less than 10 kt. Seas 3 to 4 ft. 

$$

ANZ828-230845-
Cape Charles Light to Currituck Beach Light to 100 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas
2 to 4 ft. 
.MON...S to SE winds 5 to 15 kt, increasing to 15 to 25 kt. Seas
building to 4 to 6 ft. 
.MON NIGHT...S winds 20 to 30 kt. Seas building to 6 to 9 ft. 
.TUE...S winds 20 to 30 kt. Seas 6 to 10 ft. Scattered showers. 
.TUE NIGHT...S to SW winds 15 to 25 kt. Seas 6 to 10 ft. 
.WED...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. 
.WED NIGHT...W winds 10 to 20 kt. Seas 4 to 8 ft. 
.THU...W to NW winds 10 to 20 kt. Seas 4 to 7 ft. 
.THU NIGHT...N winds 5 to 15 kt, becoming N to NE 5 to 10 kt.
Seas 3 to 5 ft. 
.FRI...E to NE winds 5 to 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E to SE winds less than 10 kt. Seas 3 to 4 ft. 

$$

ANZ925-230845-
Baltimore Canyon to Hatteras Canyon between 100 nm and 250 nm
offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, becoming E to SE 10 to 15 kt.
Seas 3 to 4 ft. 
.MON...SE winds 15 to 25 kt. Seas building to 4 to 6 ft. 
.MON NIGHT...S to SE winds 20 to 30 kt. Seas building to 6 to 9 
ft. 
.TUE...S winds 20 to 30 kt. Seas 7 to 11 ft. Scattered showers
and TSTMs. 
.TUE NIGHT...S winds 20 to 30 kt. Seas 8 to 12 ft. 
.WED...S winds 20 to 30 kt. Seas 7 to 13 ft. 
.WED NIGHT...S winds 20 to 30 kt, becoming W 15 to 25 kt. Seas
subsiding to 7 to 10 ft. 
.THU...W winds 10 to 20 kt, becoming NW 15 to 25 kt. Seas 6 to
9 ft. 
.THU NIGHT...N winds diminishing to 5 to 15 kt. Seas subsiding 
to 5 to 7 ft.
.FRI...NE winds 5 to 15 kt. Seas subsiding to 4 to 5 ft. 
.FRI NIGHT...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 

$$

ANZ830-230845-
Currituck Beach Light to Cape Hatteras to 100 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, becoming SE 5 to 15 kt. Seas 3 to
4 ft. 
.MON...SE winds 10 to 15 kt, becoming S to SE 15 to 25 kt. Seas
building to 4 to 6 ft. 
.MON NIGHT...S winds 20 to 25 kt. Seas building to 6 to 9 ft. 
.TUE...S winds 20 to 25 kt. Seas 7 to 10 ft. 
.TUE NIGHT...S to SW winds 15 to 25 kt. Seas 6 to 10 ft. 
.WED...W to SW winds 15 to 25 kt. Seas 5 to 8 ft. 
.WED NIGHT...W winds 10 to 20 kt. Seas 5 to 8 ft. 
.THU...NW winds 10 to 20 kt. Seas 4 to 7 ft. 
.THU NIGHT...N winds 5 to 15 kt, becoming NE 5 to 10 kt. Seas
3 to 5 ft. 
.FRI...NE winds 5 to 10 kt. Seas 4 to 5 ft. 
.FRI NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. 

$$

ANZ833-230845-
Cape Hatteras to Cape Fear to 100 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, becoming E to SE 10 to 15 kt.
Seas 3 to 4 ft. 
.MON...SE winds 15 to 25 kt. Seas building to 4 to 6 ft. 
.MON NIGHT...S winds 20 to 25 kt. Seas building to 6 to 9 ft. 
.TUE...S winds 15 to 25 kt. Seas 5 to 9 ft. 
.TUE NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 9 ft. 
.WED...W to SW winds 15 to 25 kt, becoming 10 to 15 kt. Seas 4 
to 7 ft.
.WED NIGHT...W winds 15 to 20 kt. Seas 4 to 7 ft. 
.THU...NW winds 10 to 20 kt, becoming N 5 to 15 kt. Seas 4 to
7 ft. 
.THU NIGHT...N to NE winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 3 to 5 ft. 

$$

ANZ930-230845-
Hatteras Canyon to Cape Fear between 100 nm and 250 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt, then,
becoming SE. Seas 3 to 5 ft. 
.MON...SE winds 10 to 15 kt, increasing to 15 to 25 kt. Seas
4 to 6 ft. 
.MON NIGHT...S to SE winds 15 to 25 kt. Seas building to 5 to 8 
ft.
.TUE...S winds 15 to 25 kt. Seas 6 to 10 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED...S winds 15 to 25 kt. Seas 6 to 10 ft. 
.WED NIGHT...S winds 20 to 30 kt, becoming W 10 to 20 kt. Seas
6 to 10 ft. 
.THU...W to NW winds 10 to 20 kt, becoming N to NW. Seas
subsiding to 5 to 7 ft. 
.THU NIGHT...N to NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E to NE winds 10 to 20 kt, diminishing to 5 to 15 
kt. Seas 4 to 6 ft. 

$$

ANZ835-230845-
Cape Fear to 31N to 1000 fm-
434 PM EDT Sun Oct 22 2017

.TONIGHT...E to SE winds 15 to 25 kt. Seas 4 to 7 ft. Scattered
showers and TSTMs. 
.MON...SE winds 15 to 25 kt, becoming S. Seas 4 to 7 ft. 
.MON NIGHT...S winds 15 to 25 kt. Seas 5 to 9 ft. Scattered
showers. 
.TUE...S winds 15 to 25 kt. Seas 5 to 9 ft. TSTMs and scattered
showers. 
.TUE NIGHT...S winds 15 to 25 kt, becoming W to SW. Seas 5 to
8 ft. 
.WED...W to NW winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...W to NW winds 15 to 20 kt. Seas 3 to 6 ft. 
.THU...N winds 10 to 15 kt, becoming N to NE. Seas 3 to 6 ft. 
.THU NIGHT...NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 

$$

ANZ935-230845-
Cape Fear to 31N east of 1000 fm to 250 nm offshore-
434 PM EDT Sun Oct 22 2017

.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...SE winds 15 to 25 kt. Seas 4 to 6 ft. 
.MON NIGHT...S to SE winds 15 to 25 kt. Seas 4 to 7 ft. 
.TUE...S winds 15 to 25 kt. Seas 4 to 8 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas 4 to 7 ft. 
.WED...S to SW winds 15 to 25 kt. Seas 4 to 8 ft. 
.WED NIGHT...S to SW winds 15 to 25 kt, becoming NW 10 to 20 kt.
Seas 5 to 9 ft. 
.THU...NW winds 10 to 15 kt, becoming N. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 20 kt. Seas 5 to 6 ft. 
.FRI NIGHT...E to NE winds 10 to 20 kt. Seas 4 to 6 ft. 

$$

.Forecaster Clark. Ocean Prediction Center.
Last Update:20:35Z, 22 October 2017
Updates: Four times per day

FZNT01 KWBC 222215
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC SUN OCT 22 2017 

CCODE/1:31:04:01:00/AOW/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. 
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 
NATIONAL WEATHER SERVICE. EMAIL US AT 
VOSOPS@NOAA.GOV(LOWERCASE). 

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN 
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE 
PROBLEM IS TAKING PLACE. 

SECURITE 

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

SYNOPSIS VALID 1800 UTC OCT 22 
24 HOUR FORECAST VALID 1800 UTC OCT 23 
48 HOUR FORECAST VALID 1800 UTC OCT 24 

.WARNINGS. 

...STORM WARNING... 
.LOW E OF AREA 56N34W 952 MB MOVING E 10 KT. OVER FORECAST 
WATERS WITHIN 420 NM NW AND 540 NM S QUADRANTS AND FROM 47N TO 
53N BETWEEN 48W AND 54W WINDS 40 TO 50 KT. SEAS 20 TO 32 FT. 
ELSEWHERE OVER FORECAST WATERS N OF 40N E OF 60W WINDS 25 TO 40 
KT. SEAS 9 TO 22 FT. 
.24 HOUR FORECAST LOW E OF AREA 56N28W 967 MB. E OF A LINE FROM 
65N37W TO 60N41W TO 50N42W WINDS 25 TO 40 KT. SEAS 14 TO 26 FT. 
ELSEWHERE WITHIN 840 NM NW QUADRANT AND FROM 39N TO 56N E OF 53W 
WINDS 20 TO 30 KT. SEAS 10 TO 21 FT. 
.48 HOUR FORECAST LOW WELL E OF AREA. E OF A LINE FROM 50N43W TO 
59N43W TO 65N37W WINDS 20 TO 30 KT. SEAS 10 TO 18 FT. 

...GALE WARNING... 
.24 HOUR FORECAST N OF 66N W OF 59W WINDS 25 TO 35 KT. SEAS TO 
12 FT. 
.48 HOUR FORECAST OVER FORECAST WATERS NW OF A LINE FROM 62N64W 
TO 64N52W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. 

.SYNOPSIS AND FORECAST. 
.24 HOUR FORECAST OVER FORECAST WATERS S OF A LINE FROM 34N55W 
TO 36N70W AND W OF A LINE FROM 31N76W TO 35N76W WINDS TO 25 KT. 
SEAS TO 8 FT. 
.48 HOUR FORECAST W OF A LINE FROM 44N66W TO 38N63W TO 31N58W 
WINDS 20 TO 30 KT. SEAS TO 12 FT. 

.48 HOUR FORECAST LOW 41N36W 1010 MB. FROM 33N TO 44N BETWEEN 
36W AND 50W WINDS 20 TO 30 KT. SEAS 11 TO 17 FT. 

.24 HOUR FORECAST HIGH 42N60W 1031 MB. 
.48 HOUR FORECAST HIGH 40N58W 1030 MB. 

.FORECASTER KOSIER. 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 1800 UTC SUN OCT 22.
24 HOUR FORECAST VALID 1800 UTC MON OCT 23.
48 HOUR FORECAST VALID 1800 UTC TUE OCT 24.

.WARNINGS.

...GULF OF MEXICO GALE WARNING...
.GULF OF MEXICO 06 HOUR FORECAST COLD FRONT FROM 30N94W TO 
26N97W. W OF FRONT N WINDS 20 TO 25 KT. SEAS 8 FT. 
.18 HOUR FORECAST COLD FRONT FROM 30N89W TO 25N93W TO 19N96W.
S OF 21N W OF 95W NW TO N WINDS 25 TO 30 KT. SEAS TO 9 FT.
FROM 21N TO 24N W OF 95W N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 30N86W TO 25N92W TO 18N95W.
S OF 21N W OF 95W NW TO N WINDS 25 TO 35 KT. SEAS 8 TO 11 FT. 
ELSEWHERE S OF 25N W OF FRONT N WINDS 20 TO 25 KT. SEAS 8 FT.
.30 HOUR FORECAST COLD FRONT FROM 30N85W TO 25N91W TO 18N95W.
S OF 21N W OF 95W NW TO N WINDS 30 TO 35 KT. SEAS 9 TO 12 FT.
FROM 21N TO 24N W OF 94W NW TO N WINDS 20 TO 25 KT. SEAS 8 FT.
N OF 28N E OF FRONT S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.42 HOUR FORECAST COLD FRONT FROM 28N83W TO 22N90W TO 18N94W.
S OF 21N W OF 94W NW TO N WINDS 25 TO 30 KT. SEAS 8 TO 11 FT.
N OF 28N BETWEEN 91W AND 95W N WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT. 
.48 HOUR FORECAST COLD FRONT FROM 27N83W TO 21N89W TO 18N93W.
S OF 21N W OF 94W NW TO N WINDS 25 TO 30 KT. SEAS 8 TO 10 FT. 
FROM 25N TO 29N BETWEEN 91W AND 96W N TO NE WINDS 20 TO 25 KT.
SEAS TO 8 FT.

.SYNOPSIS AND FORECAST.

.ATLC TROPICAL WAVE EXTENDS FROM 18N49W TO 07N51W. FROM 09N TO 
14N BETWEEN 46W AND 49W E WINDS 20 TO 25 KT. SEAS TO 9 FT. 
ELSEWHERE FROM 09N TO 17N BETWEEN 43W AND 51W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN MIXED E AND SE SWELL.
.24 HOUR FORECAST WEAKENING TROPICAL WAVE ALONG 58W S OF 18N.
FROM 08N TO 17N BEWTEEN 44W AND 53W WINDS 20 KT OR LESS. SEAS
TO 8 FT IN MIXED NE AND SE SWELL.
.48 HOUR FORECAST TROPICAL WAVE WEAKENED ALONG 63W. FROM 09N TO 
13N BETWEEN 42W AND 56W WINDS 20 KT OR LESS. SEAS TO 8 FT IN 
MIXED NE AND SE SWELL.

.ATLC FROM 19N TO 21N BETWEEN 72W AND 74W...INCLUDING ENTRANCE 
TO WINDWARD PASSAGE...E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN FROM 10N TO 18N BETWEEN 66W AND 79W WINDS 20 TO 25 
KT. SEAS 8 TO 11 FT. FROM 11N TO 15N BETWEEN 69W AND 
72W...INCLUDING GULF OF VENEZUELA...E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 68W AND 82W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E SWELL.
.48 HOUR FORECAST FROM 12N TO 13N BETWEEN 71W AND 73W E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT. ELSEWHERE FROM 12N TO 17N BETWEEN 
72W AND 82W WINDS 20 KT OR LESS. SEAS 8 FT IN E SWELL.

.CARIBBEAN S OF 18N W OF 86W...INCLUDING THE GULF OF 
HONDURAS...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 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 AGUIRRE. NATIONAL HURRICANE CENTER.
Last Update:22:16Z, 22 October 2017
Updates: Four times per day