Atlantic Text Briefing Package

[Printable Version]

AGNT40 KWNM 200115
MIMATN

Marine Weather Discussion for N Atlantic Ocean 
NWS Ocean Prediction Center Washington DC 
915 PM EDT WED 19 SEP 2018 

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

NOAA buoys across the inner offshore and coastal waters from 
Cape Hatteras to Cape Cod have reported some wind gusts to 25 kt 
late this afternoon and evening. We have not had any ship 
observations across the northern outer Mid-Atlantic waters where 
gales are likely occurring. We will await the upcoming Ascat 
overpasses to assess how well our wind grids are verifying. The 
latest high resolution guidance and the 18Z GFS continue to 
initialize marginal gales across these outer zones, so we do not 
expect to make any significant adjustments to the previous wind 
grids through the near term. The latest models continued to be 
consistent with a relatively strong cold frontal passage across 
the New England and northern Mid-Atlantic waters Sat and Sun. 
Versus their respective previous runs, both the 12Z ECMWF and 
12Z UKMET are weaker with the high pressure building across New 
England at the end of the forecast period late in the weekend 
into early next week. As a result, these latest runs are also 
weaker with the increasing easterly winds across the New England 
and northern Mid-Atlantic offshore waters at that time. The past 
few runs of the GFS remain stronger, up to 30 kt or so, with the 
east winds. A 21Z/19 altimeter pass indicates significant wave 
heights south of Nova Scotia and Newfoundland Island within the 
easterly gales there are a few feet higher than the 12Z ECMWF 
WAM and 12Z/18Z Wavewatch. Wave heights across the outer NT2 
waters are also likely a few feet higher than the guidance this 
evening as well.   

----------------------------------------------------------------
...Previous Discussion...

Frontal wave continues to gradually intensify across the 
offshore waters this afternoon, associated with amplifying upper 
level vorticity maximum at the base of broad upper level trough 
over the W Atlantic. Latest higher resolution regional guidance 
maintains gales developing by 21z NW of the low center, which 
matches well with ongoing grids within the OPC domain. In fact 
poring through all of the 12z guidance, can find no real 
opportunities to improve upon the forecast already in place, and 
plan to essentially leave the near term grids alone. Gales 
expand quickly overnight along the W and NW quadrants of low 
pressure, with headlines maintained across ANZ905, 910, 915, 
920, and 925. Gales end generally W to E Thu afternoon across 
ANZ910. 

Fri 18z through the end of the period: anomalously strong upper 
low (GEFS probabilities suggest nearly 2 standard deviations 
below normal) lifts NE across Eastern Quebec into the Labrador 
Sea across the weekend. In response to its strong approaching 
cold front, winds veer more S to SW across the waters Fri and 
Fri night, with strongest winds increasing to 30 kt across the 
Gulf of Maine. The cold front moves off the New England coast 
late Fri night, moves across the remainder of the NT1 waters 
Sat, then stalls off the Mid-Atlantic coast (generally east from 
Cape Henry along 36N) from Sat night through Mon. The front 
slowly begins to lift back N Mon night. Afternoon guidance is in 
generally good agreement with the overall synoptic picture 
setting up through the medium range. OPC preference during this 
time, however, continues with the ECMWF primarily as a consensus 
solution between the main global models. GFS hangs the front 
along the Delmarva/38N, while the GEM sags the front south to 
the Outer Banks. 

Seas: significant wave height grids will continue to be 
increased over model values during periods of gales overnight 
(4-5 ft), with highest seas to about 16 ft expected across 
ANZ920. Will closely monitor altimeter passes through the 
overnight hours and into tomorrow. Across zones 910 and 920, 
these already 15 to 25 percent increased values may end up being 
too low within the Gulf Stream. Otherwise, since trending toward 
the ECMWF for the wind grids, plan to trend seas towards the 12z 
ECMWF WAM accordingly. 

Extratropical Storm Surge Guidance: no significant positive 
surge events are expected during the next few days. At the end 
of the medium range - certainly later Sun into Mon - appears 
like the next best chance for a surge event as strong onshore 
flow will persist poleward of the stalled front. 

.WARNINGS...Preliminary. 

.NT1 New England Waters...
     None.

.NT2 Mid-Atlantic Waters...
.ANZ915...Hudson Canyon to the Great South Channel...
     Gale tonight.
.ANZ920...Baltimore Canyon to the Great South Channel...
     Gale tonight into Thursday. 
.ANZ905...The Great South Channel to the Hague Line...
     Gale tonight into Thursday. 
.ANZ910...East of the Great South Channel and south of 39N...
     Gale tonight into Thursday. 
.ANZ925...Outer Waters from Baltimore Canyon to Hatteras 
Canyon...
     Gale tonight into Thursday. 

$$ 

.Forecaster Clark/Collins. Ocean Prediction Center.
Last Update:01:17Z, 20 September 2018
Updates: Four times per day

FZNT21 KWBC 192016
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
416 PM EDT Wed Sep 19 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.

ANZ898-200800-
416 PM EDT Wed Sep 19 2018

.SYNOPSIS FOR NEW ENGLAND WATERS...Low pressure S of the area
will intensify overnight and move SE away from the waters. High
pressure will build over the area later tonight into Thu night,
then shift E of the waters Fri. A cold front will approach the 
New England coast Fri, move across the waters Fri night into Sat,
then stall S of the region Sat night through Mon. High pressure 
will build S across the area behind the front Sun into Mon, then
shift E of the waters Mon night. The front will lift back N 
toward the area Mon night.


$$

ANZ800-200800-
Gulf of Maine to the Hague Line-
416 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 15 to 25 kt. Seas 4 to 8 ft. 
.THU...NE winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
6 to 10 ft. 
.THU NIGHT...E to NE winds 5 to 10 kt, becoming E to SE. Seas
5 to 9 ft. 
.FRI...S winds 15 to 25 kt. Seas 3 to 6 ft. 
.FRI NIGHT...S winds 15 to 25 kt, becoming SW 25 to 30 kt. Seas
6 to 10 ft. 
.SAT...W to NW winds 15 to 25 kt, becoming N to NW 10 to 20 kt.
Seas 6 to 10 ft. 
.SAT NIGHT...N to NW winds 5 to 15 kt, becoming NW. Seas 3 to
5 ft. 
.SUN...N winds 10 to 15 kt, diminishing to less than 10 kt. Seas
2 to 3 ft. 
.SUN NIGHT...N to NE winds 10 to 20 kt. Seas 2 to 4 ft. 
.MON...E to NE winds 5 to 15 kt. Seas 2 to 4 ft. 
.MON NIGHT...E to NE winds 5 to 15 kt. Seas 2 to 4 ft. 

$$

ANZ805-200800-
Georges Bank between Cape Cod and 68W north of 1000 fm-
416 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 20 to 30 kt. Seas 7 to 12 ft. 
.THU...NE winds 15 to 25 kt. Seas 7 to 12 ft. 
.THU NIGHT...NE winds 10 to 20 kt, becoming E to NE 5 to 15 kt.
Seas 6 to 11 ft. 
.FRI...E to SE winds 10 to 15 kt, becoming S to SE 10 to 20 kt.
Seas 5 to 8 ft. 
.FRI NIGHT...S winds 15 to 25 kt, becoming SW. Seas 5 to 9 ft. 
.SAT...W to SW winds 15 to 25 kt, becoming N 15 to 20 kt. Seas
5 to 9 ft. 
.SAT NIGHT...N to NE winds 5 to 15 kt, becoming N 5 to 10 kt.
Seas 3 to 6 ft. 
.SUN...N winds 5 to 10 kt. Seas 2 to 4 ft. 
.SUN NIGHT...NE winds 5 to 15 kt. Seas 2 to 4 ft.
.MON...E to NE winds 10 to 15 kt, becoming NE 10 to 20 kt. Seas
3 to 6 ft. 
.MON NIGHT...E to NE winds 10 to 20 kt. Seas 4 to 7 ft. 

$$

ANZ900-200800-
Georges Bank between 68W and the Hague Line-
416 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 20 to 30 kt. Seas 8 to 13 ft. 
.THU...NE winds 15 to 25 kt. Seas 8 to 14 ft. 
.THU NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 7 to 12 ft. 
.FRI...E winds 5 to 15 kt, becoming S to SE. Seas 5 to 8 ft. 
.FRI NIGHT...S winds 15 to 20 kt, becoming SW 20 to 25 kt. Seas
5 to 8 ft. 
.SAT...W to SW winds 20 to 25 kt, becoming N 15 to 20 kt. Seas
6 to 9 ft. 
.SAT NIGHT...N winds 5 to 15 kt. Seas 3 to 6 ft. 
.SUN...N winds 5 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...N winds 10 to 15 kt, becoming NE. Seas 3 to 5 ft. 
.MON...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 

$$

ANZ810-200800-
South of New England between the Great South Channel and Montauk
Point to 1000 fm-
416 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 20 to 30 kt. Seas 6 to 11 ft. 
.THU...NE winds 15 to 25 kt. Seas 6 to 11 ft. 
.THU NIGHT...E to NE winds 10 to 20 kt, becoming E 10 to 15 kt.
Seas 6 to 11 ft. 
.FRI...E to SE winds 5 to 15 kt, becoming S. Seas 4 to 8 ft. 
.FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. 
.SAT...W to NW winds 15 to 20 kt, becoming N 10 to 20 kt. Seas
4 to 7 ft. 
.SAT NIGHT...NE winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to
5 ft. 
.SUN...NE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 2 to 4 ft.
.SUN NIGHT...NE winds 5 to 15 kt. Seas 2 to 4 ft.
.MON...E to NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 15 to 25 kt. Seas 4 to 7 ft. 

$$

ANZ815-200800-
South of Long Island between Montauk Point and Sandy Hook to
1000 fm-
416 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 20 to 30 kt. Seas 6 to 10 ft. 
.THU...NE winds 15 to 25 kt. Seas 4 to 8 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 8 ft. 
.FRI...S to SE winds 5 to 10 kt, becoming S 10 to 15 kt. Seas
4 to 7 ft. 
.FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. 
.SAT...W winds 15 to 20 kt, becoming N 5 to 15 kt. Seas 4 to
7 ft. 
.SAT NIGHT...E to NE winds 5 to 15 kt, becoming E. Seas 3 to
5 ft. 
.SUN...E to NE winds 5 to 15 kt. Seas 2 to 4 ft. 
.SUN NIGHT...E winds 5 to 15 kt. Seas 2 to 4 ft. 
.MON...E winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
3 to 5 ft. 
.MON NIGHT...E winds 15 to 20 kt. Seas 4 to 7 ft. 

$$

.Forecaster Collins. Ocean Prediction Center.
Last Update:20:17Z, 19 September 2018
Updates: Four times per day

FZNT22 KWBC 192030
OFFNT2

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
430 PM EDT Wed Sep 19 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.

ANZ899-200745-
430 PM EDT Wed Sep 19 2018

.SYNOPSIS FOR MID ATLC WATERS...Low pressure across the outer
waters will intensify overnight, then slowly weaken Thu and Thu
night as it continues well SE of the area toward Bermuda. High 
pressure will build across the N waters late Thu into Fri, then 
will shift E of the area Fri night. A cold front will approach 
from the N late Fri, move into the northern portions Sat, then 
become stationary across the central waters Sat night through
Mon. The front will slowly lift back N as a warm front Mon 
night.

$$

ANZ820-200745-
Hudson Canyon to Baltimore Canyon to 1000 fm-
430 PM EDT Wed Sep 19 2018

.TONIGHT...NE winds 15 to 25 kt. Seas 6 to 10 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.THU NIGHT...E to NE winds 10 to 15 kt, becoming E 5 to 10 kt.
Seas 4 to 7 ft. 
.FRI...SE winds 5 to 10 kt, becoming S 5 to 15 kt. Seas 4 to
7 ft. 
.FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. 
.SAT...W winds 10 to 20 kt, becoming N 10 to 15 kt. Seas 4 to
7 ft. 
.SAT NIGHT...NE winds 5 to 15 kt, becoming N to NE 5 to 10 kt.
Seas 3 to 5 ft. 
.SUN...NE winds 5 to 10 kt, becoming 5 to 15 kt. Seas 2 to 4 ft.
.SUN NIGHT...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
3 to 5 ft. 
.MON...E winds 15 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. 

$$

ANZ915-200745-
Between 1000 fm and 38.5N west of 69W-
430 PM EDT Wed Sep 19 2018

...GALE WARNING...

.TONIGHT...N to NE winds 20 to 30 kt increasing to 25 to 35 kt. 
Seas 7 to 11 ft building to 8 to 13 ft. Scattered showers and 
TSTMs. 
.THU...NE winds 20 to 30 kt. Seas 7 to 13 ft. Scattered showers
and TSTMs. 
.THU NIGHT...E to NE winds 15 to 25 kt. Seas 7 to 12 ft. 
.FRI...E winds 5 to 15 kt, becoming S to SE. Seas 6 to 9 ft. 
.FRI NIGHT...S to SW winds 10 to 20 kt. Seas 6 to 7 ft. 
.SAT...W winds 15 to 20 kt, becoming N 5 to 15 kt. Seas 5 to
7 ft. 
.SAT NIGHT...NE winds 5 to 15 kt. Seas 4 to 5 ft. 
.SUN...NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...E to NE winds 15 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. 

$$

ANZ920-200745-
Baltimore Canyon to 69W east of 1000 fm and south of 38.5N to
250 nm offshore-
430 PM EDT Wed Sep 19 2018

...GALE WARNING...

.TONIGHT...N winds 20 to 30 kt increasing to 25 to 35 kt. Seas 8
to 12 ft building to 9 to 16 ft. Scattered showers and TSTMs. 
.THU...N winds 25 to 35 kt, becoming N to NE 20 to 30 kt. Seas
9 to 15 ft. Scattered showers and TSTMs. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 7 to 13 ft. Scattered
showers and TSTMs. 
.FRI...E to SE winds 5 to 15 kt. Seas 7 to 10 ft. Scattered
showers and TSTMs. 
.FRI NIGHT...S to SE winds 5 to 15 kt, becoming W to SW 10 to
20 kt. Seas 6 to 8 ft. 
.SAT...W winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 5 to
7 ft. 
.SAT NIGHT...N to NE winds 5 to 15 kt. Seas 4 to 6 ft. 
.SUN...NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to
5 ft. 
.SUN NIGHT...E to NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 5 to 6 ft. 
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. 

$$

ANZ905-200745-
East of 69W to the Hague Line between 1000 fm and 39N-
430 PM EDT Wed Sep 19 2018

...GALE WARNING...

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

$$

ANZ910-200745-
East of 69W and south of 39N to 250 nm offshore-
430 PM EDT Wed Sep 19 2018

...GALE WARNING...

.TONIGHT...SW winds 10 to 20 kt, becoming N to NE 25 to 35 kt.
Seas 7 to 9 ft building to 9 to 15 ft. Scattered showers and 
TSTMs.
.THU...N to NE winds 25 to 35 kt, becoming NE 25 to 30 kt. Seas
12 to 17 ft. Scattered showers and TSTMs. 
.THU NIGHT...NE winds 20 to 30 kt, diminishing to 15 to 20 kt.
Seas 9 to 15 ft. 
.FRI...E to NE winds 10 to 20 kt. Seas 7 to 11 ft. 
.FRI NIGHT...S to SE winds 10 to 15 kt, becoming S to SW 10 to
20 kt. Seas 6 to 8 ft. 
.SAT...W to SW winds 5 to 15 kt, becoming W 10 to 20 kt. Seas
5 to 7 ft. 
.SAT NIGHT...W winds 5 to 15 kt, becoming N. Seas 5 to 6 ft. 
.SUN...N to NE winds 5 to 15 kt. Seas 4 to 5 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.MON...NE winds 10 to 15 kt, becoming 10 to 20 kt. Seas 5 to
6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 8 ft. 

$$

ANZ825-200745-
Baltimore Canyon to Cape Charles Light to 100 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N winds 10 to 20 kt, becoming N to NE. Seas 4 to
8 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.THU NIGHT...E to NE winds 10 to 15 kt, becoming E 5 to 10 kt.
Seas 4 to 7 ft. 
.FRI...E winds less than 10 kt, becoming S to SE. Seas 4 to
7 ft. 
.FRI NIGHT...S winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas
4 to 7 ft. 
.SAT...W to SW winds 5 to 15 kt, becoming N to NE. Seas 3 to
6 ft. 
.SAT NIGHT...NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.SUN...NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to
5 ft. 
.SUN NIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.MON...E winds 15 to 20 kt. Seas 4 to 7 ft. 
.MON NIGHT...E winds 15 to 20 kt, becoming SE 10 to 20 kt. Seas
4 to 7 ft. 

$$

ANZ828-200745-
Cape Charles Light to Currituck Beach Light to 100 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N to NE winds 15 to 25 kt. Seas 5 to 8 ft. Scattered
showers and TSTMs early. 
.THU...N to NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.THU NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 10 kt.
Seas 4 to 8 ft. 
.FRI...NE winds 5 to 10 kt, becoming E. Seas 4 to 7 ft. 
.FRI NIGHT...S to SE winds 5 to 15 kt, becoming SW. Seas 4 to
7 ft. 
.SAT...W to SW winds 5 to 15 kt, becoming W. Seas 3 to 6 ft. 
.SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 6 ft. 
.SUN...NE winds 5 to 15 kt, becoming E to NE 10 to 20 kt. Seas
3 to 5 ft. 
.SUN NIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.MON NIGHT...E winds 10 to 15 kt, becoming SE 10 to 20 kt. Seas
4 to 6 ft. 

$$

ANZ925-200745-
Baltimore Canyon to Hatteras Canyon between 100 nm and 250 nm
offshore-
430 PM EDT Wed Sep 19 2018

...GALE WARNING...

.TONIGHT...N winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 7
to 10 ft building to 9 to 15 ft. Scattered showers and TSTMs. 
.THU...N winds 25 to 35 kt, diminishing to 15 to 25 kt. Seas
9 to 15 ft. Scattered showers and TSTMs. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 6 to 11 ft. Scattered
showers and TSTMs. 
.FRI...E to NE winds 10 to 20 kt. Seas 6 to 11 ft. Scattered
showers and TSTMs. 
.FRI NIGHT...E to SE winds 5 to 15 kt, becoming W to SW 10 to
20 kt. Seas 6 to 9 ft. 
.SAT...W winds 5 to 15 kt, becoming variable. Seas 5 to 8 ft. 
.SAT NIGHT...Variable winds 5 to 15 kt. Seas 5 to 6 ft. 
.SUN...Variable winds 5 to 15 kt, becoming NE 10 to 20 kt. Seas
4 to 5 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 15 to 25 kt. Seas 4 to 7 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 

$$

ANZ830-200745-
Currituck Beach Light to Cape Hatteras to 100 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N winds 10 to 20 kt. Seas 4 to 8 ft. Scattered
showers and TSTMs early. 
.THU...N to NE winds 15 to 20 kt. Seas 5 to 8 ft. 
.THU NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 4 to 8 ft. 
.FRI...NE winds 5 to 15 kt, becoming E to NE 5 to 10 kt. Seas
4 to 7 ft. 
.FRI NIGHT...SE winds 5 to 10 kt, becoming W. Seas 5 to 7 ft. 
.SAT...Variable winds less than 10 kt. Seas 4 to 7 ft.
.SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 6 ft. 
.SUN...E winds less than 10 kt, becoming SE. Seas 3 to 5 ft. 
.SUN NIGHT...E to SE winds less than 10 kt. Seas 3 to 5 ft. 
.MON...E winds 5 to 10 kt, becoming 5 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. 

$$

ANZ833-200745-
Cape Hatteras to Cape Fear to 100 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
4 to 7 ft. Scattered showers and TSTMs early. 
.THU...N winds 10 to 20 kt, becoming NE. Seas 4 to 8 ft. 
.THU NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt.
Seas 4 to 8 ft. 
.FRI...NE winds 5 to 15 kt. Seas 4 to 7 ft. 
.FRI NIGHT...E winds less than 10 kt, becoming variable. Seas
4 to 7 ft. 
.SAT...N to NE winds 5 to 10 kt, becoming E to NE. Seas 4 to
7 ft. 
.SAT NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 6 ft. 
.SUN...E to SE winds 5 to 10 kt. Seas 3 to 5 ft. 
.SUN NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. 
.MON...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 6 ft. 

$$

ANZ930-200745-
Hatteras Canyon to Cape Fear between 100 nm and 250 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N to NW winds 15 to 25 kt. Seas 5 to 8 ft building to 6
to 11 ft. Scattered showers and TSTMs. 
.THU...N winds 15 to 25 kt. Seas 7 to 12 ft. Scattered showers
and TSTMs. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 11 ft. Scattered
showers and TSTMs. 
.FRI...NE winds 10 to 20 kt. Seas 6 to 10 ft. Scattered showers
and TSTMs. 
.FRI NIGHT...E winds 10 to 20 kt, becoming E to NE less than
10 kt. Seas 6 to 9 ft. 
.SAT...NE winds 5 to 15 kt, becoming E. Seas 6 to 8 ft. 
.SAT NIGHT...E winds 5 to 15 kt. Seas 5 to 7 ft. 
.SUN...E winds 5 to 15 kt. Seas 4 to 6 ft. 
.SUN NIGHT...E winds 5 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 5 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt, becoming E to SE 10 to 15 kt.
Seas 5 to 6 ft. 

$$

ANZ835-200745-
Cape Fear to 31N to 1000 fm-
430 PM EDT Wed Sep 19 2018

.TONIGHT...N to NE winds less than 10 kt, becoming variable,
then, increasing to 5 to 15 kt. Seas 3 to 5 ft. Scattered
showers and TSTMs early. 
.THU...NE winds 5 to 15 kt. Seas 3 to 6 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 7 ft. 
.FRI...E to NE winds 5 to 15 kt. Seas 3 to 6 ft. 
.FRI NIGHT...E winds 5 to 15 kt, becoming variable. Seas 4 to
7 ft. 
.SAT...NE winds less than 10 kt. Seas 4 to 7 ft. 
.SAT NIGHT...E winds less than 10 kt. Seas 3 to 6 ft. 
.SUN...E to NE winds 5 to 10 kt. Seas 3 to 6 ft. 
.SUN NIGHT...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.MON...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 6 ft. 

$$

ANZ935-200745-
Cape Fear to 31N east of 1000 fm to 250 nm offshore-
430 PM EDT Wed Sep 19 2018

.TONIGHT...W to NW winds 10 to 20 kt, becoming N 5 to 15 kt.
Seas 3 to 6 ft. Scattered showers and TSTMs. 
.THU...N winds 10 to 20 kt, becoming NE 15 to 20 kt. Seas 4 to
8 ft. Scattered showers and TSTMs.
.THU NIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 8 ft. Scattered showers and TSTMs.
.FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. Scattered showers
and TSTMs. 
.FRI NIGHT...E to NE winds 5 to 15 kt, becoming N to NE. Seas
5 to 8 ft. 
.SAT...N to NE winds 5 to 15 kt, becoming E to NE. Seas 6 to
7 ft. 
.SAT NIGHT...E winds 5 to 15 kt. Seas 6 to 7 ft. 
.SUN...E winds 5 to 15 kt. Seas 5 to 6 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 5 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 

$$

.Forecaster Collins. Ocean Prediction Center.
Last Update:20:31Z, 19 September 2018
Updates: Four times per day

FZNT01 KWBC 192150
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC WED SEP 19 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 1800 UTC SEP 19. 
24 HOUR FORECAST VALID 1800 UTC SEP 20. 
48 HOUR FORECAST VALID 1800 UTC SEP 21. 

.WARNINGS. 

...STORM WARNING...
.LOW 43N56W 1004 MB MOVING E 15 KT. OVER FORECAST WATERS WITHIN 
300 NM NW AND N QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. 
ELSEWHERE WITHIN 360 NM N AND 540 NM S OF A FRONT FROM 44N35W TO 
LOW CENTER TO 40N63W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 43N45W 1003 MB. WITHIN 960 NM SW...480 NM 
NW...420 NM NE...AND 600 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 
8 TO 14 FT.
.42 HOUR FORECAST LOW 43N39W 996 MB. WITHIN 300 NM W AND NW 
QUADRANTS WINDS 40 TO 50 KT. SEAS 12 TO 19 FT. 
.48 HOUR FORECAST LOW 43N37W 996 MB. WITHIN 240 NM NW QUADRANT 
WINDS 40 TO 50 KT. SEAS 12 TO 19 FT. ELSEWHERE E OF A LINE FROM 
52N36W TO 31N75W WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.LOW 39N69W 1006 MB MOVING SE 15 KT. OVER FORECAST WATERS WITHIN 
300 NM NW...360 NM SW...AND 480 NM SE QUADRANT WINDS 20 TO 30 
KT. SEAS TO 8 FT.
.06 HOUR FORECAST LOW 36N69W 1006 MB. WITHIN 240 NM NW QUADRANT 
WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 34N65W 1008 MB. WITHIN 360 NM SW AND 540 
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 32N64W 1012 MB. CONDITIONS DESCRIBED ABOVE 
WITH LOW 43N37W.

.SYNOPSIS AND FORECAST. 

.OVER FORECAST WATERS E OF A LINE FROM 49N49W TO 63N48W WINDS 20 
TO 30 KT. SEAS 8 TO 14 FT. 
.24 HOUR FORECAST E OF A LINE FROM 47N50W TO 63N39W WINDS 20 TO 
30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 60N47W 1014 MB MOVING 10 KT. OVER FORECAST WATERS WITHIN 
480 NM W SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 61N41W 1011 MB. WITHIN 360 NM SW 
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 61N38W 1011 MB. N OF 59N W OF 46W WINDS 20 
TO 30 KT. SEAS TO 10 FT.

.48 HOUR FORECAST LOW 62N61W 1003 MB. OVER FORECAST WATERS W OF 
A LINE FROM 64N57W TO 55N45W TO 49N52W WINDS 20 TO 30 KT. SEAS 
TO 8 FT.

.HIGH 32N42W 1021 MB MOVING SE 10 KT. 
.24 HOUR FORECAST HIGH 32N38W 1021 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 51N54W 1026 MB.
.48 HOUR FORECAST HIGH 52N44W 1021 MB.

.48 HOUR FORECAST HIGH 46N58W 1026 MB.

.FORECASTER SOMMERVILLE. 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 WED SEP 19.
24 HOUR FORECAST VALID 1800 UTC THU SEP 20.
48 HOUR FORECAST VALID 1800 UTC FRI SEP 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC FROM 10N TO 17N BETWEEN 55W AND 60W WINDS 20 KT OR LESS. 
SEAS TO 8 FT. 
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC 24 HOUR FORECAST N OF 30N BETWEEN 65W AND 68W SW WINDS 20 
TO 25 KT. SEAS TO 8 FT. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

.CARIBBEAN FROM 11N TO 16N BETWEEN 72W AND 79W NE TO E WINDS 20 
TO 25 KT. SEAS TO 9 FT. 
.24 HOUR FORECAST FROM 11N TO 16N BETWEEN 75W AND 81W E WINDS 20
TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST FROM 11N TO 16N BETWEEN 68W AND 76W E WINDS 20
TO 25 KT. SEAS TO 9 FT. 

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

$$

.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
Last Update:21:52Z, 19 September 2018
Updates: Four times per day