AGNT40 KWNM 202011
MIMATN

.Marine Weather Discussion for N Atlantic Ocean 
.NWS Ocean Prediction Center Washington DC 
310 PM EST TUE 20 FEB 2018 

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

Due to NWS/NCEP network problems, there are ongoing significant 
delays in receiving the latest model guidance platforms other 
than AWIPS. This discussion and this afternoons forecasts will 
not incorporate all of the typically available model data, 
including the UKMET, ECMWF, and GEFS. 

This mornings Ascat overpasses returned winds to 25 kt across 
the far northern outer NT2 waters as well as just off Cape Cod. 
The latest guidance was reasonably well initialized with these 
winds. At 18Z strong high pressure was centered east of the 
offshore waters near 36N 59W, while a weak stationary front 
extended east to west just off the Maine coast. This pattern 
will persist through Wed resulting in south to southwest return 
flow across the offshore waters. The latest models are then 
consistent in forecasting a cold front will exit the New England 
and northern Mid Atlantic coast Wed evening and Wed night. The 
12Z GFS remained slightly stronger than the remaining guidance 
with the winds both south of the front as well as the increasing 
easterly winds across the northern NT2 and southern NT1 waters 
Thu and Thu night. The 12Z NAM also supports somewhat stronger 
winds. Consequently, we blended in 50 percent of the 12Z GFS 
into the previous winds grids Wed through Thu night. 

The models are consistent that the stationary front across the 
central/northern NT2 waters will persist through midday Fri 
before finally lifting back north as a warm front later Fri and 
Fri night. Winds should again increase to 25 kt or so across the 
NT1 zones as this front moves northward. By the weekend, model 
discrepances increase as the GFS continued to be the most 
amplified of the global models with the upper level trough 
lifting northeast across the lower Great Lakes and New England, 
and as a result in also the strongest with the offshore surface 
winds associated with the approaching cold front and possible 
triple point development. Versus its previous run, the 12Z GFS 
was stronger with the developing surface low. Without the 12Z 
ECMWF or 12Z UKMET, we are not inclined to make any significant 
changes to the medium range wind grids. However, out of 
deference for the stronger GFS, as was done previously will 
evenly blend the previous wind grids with the 12Z GFS. Will cap 
winds at 30 kt Sun and Sun night. 

Seas: Not surprisingly, given such a weak pattern, the 12z WW3 
appears well initialized with the wave heights across the 
offshore and coastal waters this afternoon. To incorporate some 
of the recent guidance and the stronger winds seen in the 12Z 
GFS, we will populate the wave height grids with an even blend 
of the previous grids and the 12Z WW3. 

Extratropical Storm Surge Guidance: no major deviation from the 
latest surge guidance appears necessary over the few days. 

.WARNINGS...Preliminary. 

.NT1 New England Waters... 
     None. 

.NT2 Mid-Atlantic Waters... 
     None. 

$$ 

.Forecaster Clark. Ocean Prediction Center.
Last Update:20:12Z, 20 February 2018
Updates: Four times per day

FZNT21 KWBC 202035
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
335 PM EST Tue Feb 20 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.

ANZ898-210815-
335 PM EST Tue Feb 20 2018

.SYNOPSIS FOR NEW ENGLAND WATERS...A stationary front will 
persist near the Maine coast tonight, then will lift N as a warm
front early Wed. A cold front will slowly approach from the W 
Wed, then move across the region Wed night. The front will stall 
S of the area Thu and Thu night, then lift back N across the 
waters as a warm front Fri and Fri night. Another weak cold front
will move across the waters late Fri night into Sat, stall just 
S of the area Sat night, then lift NE across the waters as a 
warm front Sun. Developing low pressure will move NE along the 
coast late Sun and Sun night while pulling a cold front across 
the waters.

$$

ANZ800-210815-
Gulf of Maine to the Hague Line-
335 PM EST Tue Feb 20 2018

.TONIGHT...SW winds 10 to 20 kt. Seas 4 to 7 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...SW winds 20 to 30 kt. Seas 5 to 9 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 20 to 30 kt, becoming N 15 to 25 kt. Seas
6 to 10 ft. Areas of fog with VSBY 1 nm or less early. 
.THU...N winds 15 to 20 kt, diminishing to 5 to 15 kt. Seas 4 to
7 ft, becoming 3 to 5 ft. 
.THU NIGHT...N winds 5 to 15 kt, becoming NE 10 to 15 kt. Seas
2 to 4 ft. 
.FRI...E to NE winds 10 to 15 kt, becoming SE 5 to 15 kt. Seas
1 to 3 ft. 
.FRI NIGHT...S winds 15 to 25 kt, becoming W. Seas 2 to 4 ft. 
.SAT...W winds 15 to 25 kt, becoming NW 10 to 20 kt. Seas 2 to
4 ft. 
.SAT NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Seas
2 to 4 ft. 
.SUN...E winds 20 to 30 kt. Seas 4 to 6 ft, building to 6 to
10 ft. 
.SUN NIGHT...S to SE winds 20 to 30 kt, becoming W to SW 15 to 
25 kt. Seas 8 to 12 ft.


$$

ANZ805-210815-
Georges Bank between Cape Cod and 68W north of 1000 fm-
335 PM EST Tue Feb 20 2018

.TONIGHT...W to SW winds 20 to 25 kt. Seas 5 to 7 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...SW winds 20 to 30 kt. Seas 5 to 9 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...W to SW winds 15 to 25 kt, becoming N 10 to 20 kt.
Seas 5 to 9 ft. Areas of fog with VSBY 1 nm or less early. 
.THU...N to NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.FRI...E to NE winds 10 to 20 kt, becoming E 10 to 15 kt. Seas
3 to 5 ft. 
.FRI NIGHT...S to SE winds 10 to 20 kt, becoming W to SW 15 to
25 kt. Seas 3 to 5 ft. 
.SAT...W to NW winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...N to NW winds 5 to 15 kt, becoming E to NE 10 to
20 kt. Seas 3 to 4 ft. 
.SUN...E to SE winds 20 to 30 kt. Seas 5 to 9 ft. 
.SUN NIGHT...S to SE winds 15 to 25 kt, becoming W. Seas 8 to
11 ft. 

$$

ANZ900-210815-
Georges Bank between 68W and the Hague Line-
335 PM EST Tue Feb 20 2018

.TONIGHT...SW winds 20 to 25 kt, becoming W. Seas 6 to 8 ft.
Areas of fog with VSBY 1 nm or less. 
.WED...SW winds 15 to 25 kt. Seas 6 to 9 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...W to NW winds 20 to 30 kt. Seas 6 to 10 ft. Areas
of fog with VSBY 1 nm or less early. 
.THU...N to NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...NE winds 15 to 20 kt, becoming E 10 to 15 kt. Seas 3 to
5 ft. 
.FRI NIGHT...S to SE winds 10 to 20 kt, becoming W to SW 15 to
25 kt. Seas 3 to 5 ft. 
.SAT...W to NW winds 15 to 25 kt. Seas 3 to 6 ft. 
.SAT NIGHT...N to NW winds 5 to 15 kt, becoming NE 10 to 20 kt.
Seas 3 to 5 ft. 
.SUN...E to SE winds increasing to 20 to 30 kt. Seas building to
5 to 9 ft.
.SUN NIGHT...S to SE winds 15 to 25 kt, becoming W to SW 10 to
20 kt. Seas 8 to 10 ft. 

$$

ANZ810-210815-
South of New England between the Great South Channel and Montauk
Point to 1000 fm-
335 PM EST Tue Feb 20 2018

.TONIGHT...W to SW winds 20 to 25 kt. Seas 5 to 7 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...SW winds 20 to 25 kt. Seas 6 to 7 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 15 to 20 kt, becoming W to NW 10 to 20 kt.
Seas subsiding to 4 to 6 ft. Areas of fog and chance of rain 
with VSBY 1 nm or less. 
.THU...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft. 
.FRI...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to
6 ft. 
.FRI NIGHT...S to SE winds 15 to 25 kt, becoming W 15 to 20 kt.
Seas 3 to 5 ft. 
.SAT...W winds 10 to 20 kt, becoming W to NW 10 to 15 kt. Seas
3 to 5 ft. 
.SAT NIGHT...Variable winds less than 10 kt, becoming E to NE
10 to 20 kt. Seas 3 to 4 ft. 
.SUN...E winds 15 to 25 kt, becoming S to SE 10 to 20 kt. Seas
building to 5 to 8 ft. 
.SUN NIGHT...S to SW winds 15 to 25 kt, becoming W 20 to 25 kt.
Seas building to 8 to 11 ft. 

$$

ANZ815-210815-
South of Long Island between Montauk Point and Sandy Hook to
1000 fm-
335 PM EST Tue Feb 20 2018

.TONIGHT...SW winds 15 to 20 kt. Seas 4 to 6 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...SW winds 20 to 25 kt. Seas 4 to 7 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 10 to 20 kt, becoming N 10 to 15 kt. Seas
subsiding to 3 to 5 ft. Chance of rain and areas of fog with 
VSBY 1 nm or less. 
.THU...NE winds 15 to 25 kt. Seas becoming 4 to 7 ft. 
.THU NIGHT...E to NE winds 15 to 25 kt. Seas 4 to 7 ft. 
.FRI...E winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
3 to 5 ft. 
.FRI NIGHT...SW winds 10 to 20 kt, becoming W 15 to 20 kt. Seas
3 to 5 ft. 
.SAT...W winds 10 to 15 kt, becoming NW 5 to 15 kt. Seas 3 to
5 ft. 
.SAT NIGHT...Variable winds less than 10 kt, becoming E 10 to
20 kt. Seas 3 to 5 ft. 
.SUN...E to SE winds 15 to 25 kt, becoming S to SW. Seas 
building to 5 to 9 ft. 
.SUN NIGHT...SW winds 15 to 25 kt, becoming W 15 to 20 kt. Seas
6 to 10 ft. 

$$

.Forecaster Clark. Ocean Prediction Center.
Last Update:20:35Z, 20 February 2018
Updates: Four times per day

FZNT22 KWBC 201456
OFFNT2

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
956 AM EST Tue Feb 20 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.

ANZ899-210300-
956 AM EST Tue Feb 20 2018

.SYNOPSIS FOR MID ATLC WATERS...Strong high pressure will 
persist just E of the area today through Sat night. A weak cold 
front will move into the northern waters Wed night, stall Thu 
and Thu night, then lift back N of the area Fri. Another weak 
cold front will move into the far northern portions Sat, then 
stall Sat night. 

$$

ANZ820-210300-
Hudson Canyon to Baltimore Canyon to 1000 fm-
956 AM EST Tue Feb 20 2018

.TODAY through WED...SW winds 15 to 20 kt. Seas 3 to 6 ft. Areas
of fog with VSBY 1 nm or less. 
.WED NIGHT...SW winds 15 to 20 kt, becoming W to SW 5 to 15 kt.
Seas 3 to 6 ft. Areas of fog. Chance of rain. VSBY 1 NM or less.
.THU...NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.THU NIGHT...E to NE winds 15 to 25 kt. Seas 4 to 7 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.FRI NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT...W winds 5 to 15 kt, becoming N 5 to 10 kt. Seas 3 to
5 ft. 
.SAT NIGHT...NE winds 5 to 15 kt, becoming E 15 to 20 kt. Seas
3 to 5 ft. 

$$

ANZ915-210300-
Between 1000 fm and 38.5N west of 69W-
956 AM EST Tue Feb 20 2018

.TODAY...SW winds 15 to 20 kt. Seas 5 to 7 ft. Chance of rain. 
.TONIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...SW winds 15 to 20 kt. Seas 5 to 6 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 15 to 20 kt, becoming W 10 to 20 kt. Seas
4 to 7 ft. Areas of fog with VSBY 1 nm or less. 
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 6 to 7 ft. 
.FRI...E to SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...S to SW winds 10 to 20 kt, becoming W to SW 15 to
20 kt. Seas 4 to 6 ft. 
.SAT...W winds 10 to 20 kt, becoming NW 5 to 15 kt. Seas 3 to
6 ft. 
.SAT NIGHT...N to NE winds 10 to 15 kt, becoming E to NE 15 to
20 kt. Seas 3 to 5 ft. 

$$

ANZ920-210300-
Baltimore Canyon to 69W east of 1000 fm and south of 38.5N to
250 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...SW winds 10 to 20 kt. Seas 4 to 7 ft. 
.TONIGHT...SW winds 15 to 20 kt. Seas 4 to 7 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...SW winds 15 to 20 kt. Seas 5 to 6 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...W to SW winds 10 to 20 kt. Seas 4 to 7 ft. Areas of
fog with VSBY 1 nm or less. 
.THU...W winds 10 to 20 kt, becoming NE. Seas 3 to 6 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft. 
.FRI...E winds 10 to 20 kt, becoming E to SE 10 to 15 kt. Seas
5 to 7 ft. 
.FRI NIGHT...W to SW winds 15 to 25 kt. Seas 4 to 6 ft. 
.SAT...W to SW winds 15 to 25 kt. Seas 4 to 7 ft. 
.SAT NIGHT...W to NW winds 15 to 25 kt, becoming E to NE 10 to
20 kt. Seas 3 to 6 ft. 

$$

ANZ905-210300-
East of 69W to the Hague Line between 1000 fm and 39N-
956 AM EST Tue Feb 20 2018

.TODAY...SW winds 15 to 25 kt. Seas 6 to 8 ft. Chance of rain. 
.TONIGHT...W to SW winds 15 to 25 kt. Seas 6 to 8 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...SW winds 15 to 25 kt. Seas 6 to 7 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 20 to 25 kt, becoming W 15 to 25 kt. Seas
6 to 9 ft. 
.THU...N winds 10 to 20 kt, becoming NE. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 5 to 6 ft. 
.FRI...E to NE winds 10 to 20 kt, becoming E 10 to 15 kt. Seas
4 to 6 ft. 
.FRI NIGHT...S to SE winds 10 to 20 kt, becoming W to SW 15 to
25 kt. Seas 4 to 6 ft. 
.SAT...W to NW winds 15 to 25 kt. Seas 5 to 8 ft. 
.SAT NIGHT...N winds 10 to 20 kt, becoming NE 15 to 20 kt. Seas
4 to 6 ft. 

$$

ANZ910-210300-
East of 69W and south of 39N to 250 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY and TONIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft.
.WED...SW winds 15 to 20 kt. Seas 5 to 6 ft. 
.WED NIGHT...SW winds 15 to 20 kt, becoming W. Seas 5 to 7 ft. 
.THU...W to NW winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft. 
.FRI...NE winds 15 to 20 kt, becoming E 5 to 15 kt. Seas 5 to
7 ft. 
.FRI NIGHT...S to SE winds 10 to 20 kt, becoming SW 15 to 20 kt.
Seas 4 to 6 ft. 
.SAT...W to NW winds 15 to 25 kt. Seas 5 to 7 ft. 
.SAT NIGHT...N winds 10 to 20 kt, becoming NE 15 to 20 kt. Seas
4 to 6 ft. 

$$

ANZ825-210300-
Baltimore Canyon to Cape Charles Light to 100 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Areas of fog
with VSBY 1 nm or less. 
.TONIGHT...S winds 15 to 20 kt, becoming SW. Seas 3 to 5 ft.
Areas of fog with VSBY 1 nm or less. 
.WED...SW winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to
5 ft. Areas of fog with VSBY 1 nm or less. 
.WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt.
Seas 3 to 5 ft. Areas of fog with VSBY 1 nm or less. 
.THU...Variable winds 5 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...N to NE winds 10 to 20 kt. Seas 4 to 7 ft. 
.FRI...E winds 5 to 15 kt, becoming S to SW. Seas 4 to 7 ft. 
.FRI NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 

$$

ANZ828-210300-
Cape Charles Light to Currituck Beach Light to 100 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S winds 10 to 15 kt. Seas 2 to 4 ft. Areas of fog with
VSBY 1 nm or less. 
.TONIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
3 to 4 ft. Areas of fog with VSBY 1 nm or less. 
.WED...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Areas of fog
with VSBY 1 nm or less. 
.WED NIGHT...SW winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 5 ft. Areas of fog with VSBY 1 nm or less. 
.THU...SW winds 5 to 15 kt. Seas 2 to 4 ft. 
.THU NIGHT...SW winds 5 to 15 kt, becoming N to NW. Seas 3 to
5 ft. 
.FRI...Variable winds less than 5 kt, becoming S to SW. Seas
3 to 6 ft. 
.FRI NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT and SAT NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ925-210300-
Baltimore Canyon to Hatteras Canyon between 100 nm and 250 nm
offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S to SW winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 4 to 6 ft. 
.TONIGHT...S to SW winds 10 to 20 kt. Seas 4 to 5 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...SW winds 10 to 20 kt. Seas 4 to 5 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft. Areas of fog
with VSBY 1 nm or less. 
.THU...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to
5 ft. 
.THU NIGHT...W to SW winds 5 to 15 kt, except N portion becoming
N to NE 10 to 20 kt. Seas 4 to 7 ft. 
.FRI...Variable winds 5 to 15 kt, becoming W to SW. Seas 4 to 7 
ft. 
.FRI NIGHT...SW winds 5 to 15 kt, increasing to 10 to 20 kt.
Seas 4 to 6 ft. 
.SAT...W to SW winds 15 to 25 kt. Seas 3 to 6 ft. 
.SAT NIGHT...W to SW winds 10 to 20 kt. Seas 3 to 6 ft. 

$$

ANZ830-210300-
Currituck Beach Light to Cape Hatteras to 100 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Areas of fog
with VSBY 1 nm or less. 
.WED NIGHT...S to SW winds 10 to 20 kt, becoming SW 10 to 15 kt.
Seas 3 to 5 ft. Areas of fog with VSBY 1 nm or less. 
.THU...SW winds 5 to 15 kt. Seas 2 to 4 ft. 
.THU NIGHT...W to SW winds 5 to 15 kt. Seas 2 to 4 ft. 
.FRI...Variable winds less than 10 kt, becoming S to SW. Seas
3 to 5 ft. 
.FRI NIGHT...S to SW winds 10 to 20 kt. Seas 4 to 5 ft. 
.SAT and SAT NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ833-210300-
Cape Hatteras to Cape Fear to 100 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...S winds 5 to 15 kt. Seas 3 to 5 ft. Areas of fog with
VSBY 1 nm or less. 
.WED NIGHT...S winds 5 to 15 kt. Seas 3 to 5 ft. Areas of fog
with VSBY 1 nm or less. 
.THU...S to SW winds 5 to 10 kt, becoming 5 to 15 kt. Seas 3 to
5 ft. 
.THU NIGHT...S to SW winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...S winds less than 10 kt, increasing to 5 to 15 kt. Seas
3 to 5 ft. 
.FRI NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...SW winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 6 ft. 

$$

ANZ930-210300-
Hatteras Canyon to Cape Fear between 100 nm and 250 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...S to SE winds 5 to 10 kt, becoming 5 to 15 kt. Seas
4 to 5 ft. 
.TONIGHT...S to SE winds 10 to 15 kt. Seas 4 to 5 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...S winds 5 to 15 kt. Seas 4 to 6 ft. Areas of fog with
VSBY 1 nm or less early. 
.WED NIGHT...S to SW winds 5 to 15 kt. Seas 4 to 6 ft. Areas of
fog with VSBY 1 nm or less. 
.THU...S to SW winds 5 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.FRI...S to SW winds less than 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt.
Seas 4 to 5 ft. 
.SAT...SW winds 10 to 20 kt. Seas 4 to 5 ft. 
.SAT NIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft. 

$$

ANZ835-210300-
Cape Fear to 31N to 1000 fm-
956 AM EST Tue Feb 20 2018

.TODAY...S to SE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...S to SE winds 10 to 15 kt. Seas 3 to 5 ft. Areas of
fog with VSBY 1 nm or less. 
.WED...S to SE winds 5 to 15 kt. Seas 3 to 6 ft. Areas of fog
with VSBY 1 nm or less early. 
.WED NIGHT...S to SE winds 5 to 15 kt. Seas 3 to 6 ft. 
.THU...SE winds 5 to 15 kt, diminishing to less than 10 kt. Seas
3 to 6 ft. 
.THU NIGHT...SE winds 5 to 15 kt. Seas 3 to 6 ft. 
.FRI...SE winds 5 to 15 kt, becoming S. Seas 3 to 6 ft. 
.FRI NIGHT...S winds 5 to 15 kt. Seas 3 to 6 ft. 
.SAT...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...S to SW winds 5 to 15 kt, becoming S 10 to 20 kt.
Seas 3 to 6 ft. 

$$

ANZ935-210300-
Cape Fear to 31N east of 1000 fm to 250 nm offshore-
956 AM EST Tue Feb 20 2018

.TODAY...SE winds 10 to 15 kt. Seas 4 to 5 ft. 
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. Areas of fog
with VSBY 1 nm or less. 
.WED...SE winds 5 to 15 kt. Seas 4 to 6 ft. Areas of fog with
VSBY 1 nm or less early. 
.WED NIGHT...SE winds 5 to 15 kt. Seas 5 to 6 ft. Areas of fog
with VSBY 1 nm or less. 
.THU...SE winds 5 to 15 kt. Seas 5 to 6 ft. 
.THU NIGHT...SE winds 5 to 15 kt. Seas 4 to 6 ft. 
.FRI...S to SE winds 5 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...S to SE winds 5 to 15 kt. Seas 4 to 5 ft. 
.SAT...S to SW winds 5 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 

$$

.Forecaster Clark. Ocean Prediction Center.
Last Update:14:57Z, 20 February 2018
Updates: Four times per day

FZNT01 KWBC 201627
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC TUE FEB 20 2018 

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). 

PAN PAN 

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

SYNOPSIS VALID 1200 UTC FEB 20 
24 HOUR FORECAST VALID 1200 UTC FEB 21 
48 HOUR FORECAST VALID 1200 UTC FEB 22 

.WARNINGS. 

...HURRICANE FORCE WIND WARNING... 
.LOW 42N38W 991 MB MOVING SE 15 KT. FROM 38N TO 45N BETWEEN 39W 
AND 43W WINDS 50 TO 65 KT. SEAS 34 TO 57 FT. ALSO WITHIN 240 NM 
NW...300 NM W AND SW AND 360 NM S QUADRANTS WINDS 35 TO 50 KT. 
SEAS 24 TO 46 FT...HIGHEST SW OF LOW. ELSEWHERE OVER FORECAST 
WATERS BETWEEN 120 NM AND 480 NM E QUADRANTS...WITHIN 360 NM NW 
AND 420 NM W AND 540 NM SW AND S QUADRANTS WINDS 25 TO 40 KT. 
SEAS 16 TO 35 FT...HIGHEST S AND SW OF LOW.
.24 HOUR FORECAST LOW E OF AREA 40N32W 1000 MB. OVER FORECAST 
WATERS FROM 34N TO 43N E OF 38W WINDS 30 TO 45 KT. SEAS 18 TO 28 
FT. ELSEWHERE E OF 45W S OF 49N WINDS 20 TO 30 KT. SEAS 10 TO 24 
FT S OF 45N E OF 41W WINDS 25 TO 40 KT. SEAS 14 TO 28 
FT...EXCEPT WITHIN 360 NM SW QUADRANT SEAS 28 TO 36 FT. 
.48 HOUR FORECAST LOW E OF AREA 35N28W 999 MB. E OF A LINE FROM 
39N35W TO 31N39W AREA OF N WINDS 20 TO 30 KT. SEAS 10 TO 18 FT. 

...STORM WARNING... 
.LOW 65N39W 978 MB NEARLY STATIONARY NEXT 6 HOURS THEN MOVING N 
15 KT. OVER FORECAST WATERS FROM 61N TO 64N E OF GREENLAND WINDS 
40 TO 55 KT. SEAS IN ICE FREE WATERS 18 TO 34 FT. ELSEWHERE N OF 
A LINE FROM 59N35W TO 60N43W WINDS 25 TO 40 KT. SEAS 12 TO 24 FT.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS AS 
DESCRIBED WITH LOW 62N42W BELOW.

...STORM WARNING... 
.LOW 57N48W 1002 MB MOVING NE 25 KT AND RAPIDLY INTENSIFYING 
THEN SLOWING WHILE TURNING MORE N AFTER 12 HOURS. WITHIN 180 NM 
SE AND 420 NM SW AND W QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 14 
FT. 
.24 HOUR FORECAST LOW 62N42W 978 MB. WITHIN 180 NM S SEMICIRCLE 
AND FROM 55N TO 58N BETWEEN 44W AND 55W WINDS 35 TO 50 KT. SEAS 
12 TO 25 FT...HIGHEST NEAR 57N51W. ELSEWHERE OVER FORECAST 
WATERS WITHIN 540 NM SW AND S AND 300 NM SE QUADRANTS WINDS 25 
TO 35 KT. SEAS 10 TO 22 FT...HIGHEST SW QUADRANT.
.36 HOUR FORECAST LOW 61N41W 970 MB. WITHIN 240 NM S AND SW 
QUADRANTS WINDS 40 TO 55 KT. SEAS 16 TO 31 FT.
.48 HOUR FORECAST LOW JUST E OF AREA 63N34W 970 MB. WITHIN 300 
NM S QUADRANT AND E OF A LINE FROM 61N50W TO 57N40W WINDS 30 TO 
45 KT. SEAS 14 TO 27 FT...HIGHEST NEAR 59N35W.

...STORM WARNING...
.NEW LOW 49N35W 998 MB MOVING NE 40 KT NEXT 12 HOURS THEN 
TURNING MORE N AND RAPIDLY INTENSIFYING. EXCEPT WHERE PREVIOUSLY 
NOTED OVER FORECAST WATERS WITHIN 120 NM NW SEMICIRCLE WINDS 35 
TO 50 KT. SEAS 16 TO 25 FT. ELSEWHERE WITHIN 180 NM NW 
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 10 TO 22 FT.
.24 HOUR FORECAST LOW E OF AREA 64N30W 960 MB. N OF 64N E OF 
GREENLAND WINDS 40 TO 55 KT. SEAS IN ICE FREE WATERS 14 TO 22 
FT. ELSEWHERE N OF 63N E OF GREENLAND WINDS 25 TO 40 KT. SEAS 9 
TO 17 FT.
.36 HOUR FORECAST LOW AND CONDITIONS WELL N OF AREA. 

...GALE WARNING... 
.LOW 65N61W 998 MB MOVING SE 15 KT. OVER FORECAST WATERS BETWEEN 
120 NM AND 360 NM S QUADRANT WINDS 25 TO 40 KT. SEAS IN ICE FREE 
WATERS TO 9 FT. 
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW 
62N42W ABOVE. 

...GALE WARNING...
.36 HOUR FORECAST LOW INLAND NEAR 51N62W 1001 MB. FROM 38N TO 
51N W OF 51W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 51N45W 981 MB. WITHIN 660 NM W AND 540 NM 
SW QUADRANTS AND FROM 43N TO 50N E OF 47W WINDS 30 TO 45 KT. 
SEAS IN ICE FREE FORECAST WATERS 8 TO 16 FT. 

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS 
FROM 60N TO 65N BETWEEN GREENLAND AND 38W AND W AND NW OF A LINE 
FROM 60N45W TO 53N51W. 
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE 
FROM 65N35W TO 54N40W TO 49N50W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE 
FROM 60N39W TO 55N50W TO 49N52W TO 46N61W.

.SYNOPSIS AND FORECAST. 

.FROM 40N TO 43N W OF 63W AREA OF SW WINDS TO 25 KT. SEAS LESS 
THAN 8 FT. 
.24 HOUR FORECAST FROM 37N TO 44N W OF 48W WINDS TO 25 KT. SEAS 
TO 10 FT. 
.48 HOUR FORECAST CONDITIONS AS DESCRIBED WITH LOW 51N45W ABOVE. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF A LINE 35N75W 
TO 44N63W.
.24 HOUR FORECAST DENSE FOG W OF A LINE FROM 45N60W TO 31N72W.
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 42N60W TO 33N73W.

.HIGH 38N57W 1039 MB MOVING SW 15 KT. 
.24 HOUR FORECAST HIGH 33N61W 1038 MB. 
.48 HOUR FORECAST HIGH 33N64W 1035 MB. 

.48 HOUR FORECAST HIGH 43N38W 1021 MB. 

.FORECASTER BANCROFT. 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 TUE FEB 20.
24 HOUR FORECAST VALID 1200 UTC WED FEB 21.
48 HOUR FORECAST VALID 1200 UTC THU FEB 22.

.WARNINGS.

...CARIBBEAN GALE WARNING...  
.FROM 11N TO 13N BETWEEN 73W AND 77W NE TO E WINDS 30 TO 35 KT. 
SEAS 10 TO 15 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 68W AND 82W 
NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. N OF 12N E OF 
68W...INCLUDING THE ATLC PASSAGES...NE TO E WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT. REMAINDER OF AREA S OF 17N BETWEEN 76W AND 83W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL. N OF 19N E 
OF 80W...INCLUDING WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. 
SEAS TO 9 FT. 
.24 HOUR FORECAST FROM 10.5N TO 13.5N BETWEEN 73W AND 77W NE TO 
E WINDS 30 TO 35 KT. SEAS 11 TO 16 FT. ELSEWHERE FROM 10N TO 18N 
E OF 83W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. S OF 10N 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. N OF 18N 
E OF 80W...INCLUDING WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. 
SEAS TO 10 FT.
.48 HOUR FORECAST FROM 10.5N TO 13N BETWEEN 74W AND 77W NE WINDS 
30 TO 35 KT. SEAS 10 TO 15 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 
68 W AND 82W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. N OF 
12N E OF 68W... INCLUDING THE ATLC PASSAGES...NE TO E WINDS 20 
TO 25 KT. SEAS 8 TO 10 FT. N OF 18.5N E OF 77W...INCLUDING 
WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS TO 9 FT. 
REMAINDER WATERS WATERS S OF 15N BETWEEN 75W AND 83W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N36W TO 25N44W TO 23N60W. N OF FRONT E 
OF 60W N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 21 FT IN N 
SWELL...HIGHEST NE PART. ATLC WATERS FROM 13N TO 21N BETWEEN 55W 
AND 77W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. S OF 13N 
WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL. 
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 24N35W TO 19N50W. N 
OF FRONT TO 27N E OF 50W NE WINDS 20 TO 25 KT. SEAS 10 TO 18 FT. 
ATLC WATERS FROM 15N TO 26N BETWEEN 50W AND 74W NE TO E WINDS 20 
TO 25 KT. SEAS 8 TO 15 FT. ELSEWHERE ATLC WATERS OUTSIDE BAHAMAS 
S OF LINE 31N35W TO 31N67W TO 27N77W WINDS 20 KT OR LESS. SEAS 8 
TO 23 FT IN MIXED NE AND NW SWELL...HIGHEST NE.
.48 HOUR FORECAST COLD FRONT DISSIPATED. ATLC WATERS FROM 14N TO 
24N BETWEEN 47W AND 77W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 15 
FT IN N TO NE SWELL. ELSEWHERE ATLC WATERS OUTSIDE BAHAMAS S OF 
LINE 31N35W TO 31N6OW TO 28N77W...WINDS 20 KT OR LESS. SEAS 8 TO 
16 FT IN MIXED N AND NE SWELL...HIGHEST N OF 17N E OF 45W. 

.CARIBBEAN S OF 19N W OF 86W...INCLUDING GULF OF HONDURAS...E 
WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST S OF 18N W OF 85W...INCLUDING GULF OF 
HONDURAS...E TO SE WINDS 20 TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

.GULF OF MEXICO FROM 23N TO 25N E OF 84W...INCLUDING STRAITS OF 
FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST FROM 23N TO 26N E OF 84W...INCLUDING STRAITS 
OF FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 21N 
TO 27N BETWEEN 90W AND 95W SE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 21N TO 25N BETWEEN 91W AND 94W E TO SE 
WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.
Last Update:16:28Z, 20 February 2018
Updates: Four times per day