High Seas Forecast - Western Atlantic, Caribbean and Gulf of Mexico

Expires:No;;762240
FZNT01 KWBC 172212
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED DEC 17 2025

CCODE/2:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

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.PHP
(ALL LOWERCASE).

SECURITE

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC DEC 17. 
24 HOUR FORECAST VALID 1800 UTC DEC 18.
48 HOUR FORECAST VALID 1800 UTC DEC 19.

.WARNINGS.

...HURRICANE FORCE WIND WARNING... 
.COMPLEX LOW WITH MAIN CENTER E OF THE AREA 59N28W 947 MB MOVING
NE 10 KT. WITHIN 120 NM SE OF A FRONT FROM 55N35W TO 58N41W WINDS
50 TO 60 KT. SEAS 8 TO 14 M...HIGHEST NEAR 54N35W. ELSEWHERE
WITHIN 180 NM NE OF A LINE FROM 57N39W TO 58N39W TO 61N37W TO
61N35W...AND FROM 43N TO 57N E OF 45W WINDS 35 TO 50 KT. SEAS 5
TO 9 M. ALSO N OF 40N E OF 49W WINDS 25 TO 35 KT. SEAS 3.5 TO 7
M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA 60N19W
964 MB. E OF A LINE FROM 65N35W TO 64N40W TO 60N43W TO 51N35W
WINDS 20 TO 30 KT. SEAS 5 TO 9 M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST AND SECOND CENTER WELL E
OF THE AREA AND CONDITIONS DESCRIBED BELOW WITH LOW 58N30W IN
STORM WARNING BELOW.

...STORM WARNING...
.NW OF A LINE FROM 35N71W TO 46N49W TO 55N52W TO 62N62W AREA OF
SW WINDS 25 TO 35 KT SEAS 2.5 TO 4.5 M.
.12 HOUR FORECAST NEW COMPLEX LOW WITH MAIN CENTER NEAR 64N65W.
FRONT TO EXTEND FROM LOW CENTER TO 62N59W TO 56N51W. WITHIN 150
NM EITHER SIDE OF FRONT AND FROM 37N TO 52N BETWEEN 40W AND 70W
WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 60N49W 978 MB.
FRONT TO EXTEND FROM 65N60W TO 63N53W TO LOW CENTER TO 57N44W.
WITHIN 420 NM SW QUADRANT AND FROM 40N TO 53N BETWEEN 36W AND 55W
WINDS 35 TO 45 KT. SEAS 4 TO 8 M. ELSEWHERE WITHIN 60 NM NW OF
FRONT...WITHIN 360 NM SW OF FRONT...AND FROM 39N TO 54N BETWEEN
35W AND 61W WINDS 25 TO 40 KT. SEAS 3 TO 6 M...HIGHEST W OF 46W.
.30 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 57N40W 973 MB AND
SECOND CENTER TO FORM NEAR 60N48W 976 MB. WITHIN AN AREA BOUNDED
BY A LINE FROM 63N52W TO 57N60W TO 51N55W TO 45N44W TO 41N44W TO
41N40W TO 45N35W TO 55N35W TO 57N46W TO 63N52W WINDS 35 TO 50 KT.
SEAS 4.5 TO 8.5 M. 
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA 58N30W
962 MB. E OF A LINE FROM 57N35W TO 60N44W TO 57N45W TO 48N39W TO
46N35W AND FROM 64N TO 66N E OF 38W WINDS 40 TO 55 KT. SEAS 6.5
TO 11 M...HIGHEST NEAR 57N35W. ELSEWHERE N OF 43N E OF 50W WINDS
25 TO 40 KT. SEAS 4 TO 8 M. 

...STORM WARNING...
.18 HOUR FORECAST NEW LOW S OF THE AREA 30N58W 1012 MB. S OF 33N
BETWEEN 51W AND 62W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW S OF THE AREA 30N57W 1012 MB. S OF 33N
BETWEEN 54W AND 59W WINDS 35 TO 45 KT. SEAS 2.5 TO 5 M. ELSEWHERE
S OF 34N BETWEEN 51W AND 60W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5
M. 
.30 HOUR FORECAST LOW JUST S OF THE AREA 29N56W 1011 MB. WITHIN
120 NM NW AND N OF A LINE FROM 31N56W TO 33N51W WINDS 35 TO 50
KT. SEAS 3 TO 6 M...HIGHEST NEAR 31N55W. 
.48 HOUR FORECAST LOW S OF THE AREA 29N56W 1011 MB. S OF 39N
BETWEEN 40W AND 59W WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.

...STORM WARNING...
.36 HOUR FORECAST WITHIN 300 NM W AND NW OF A LINE FROM 30N74W TO
34N69W TO 41N65W AREA OF S WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST FROM 33N TO 45N BETWEEN 62W AND 76W WINDS 35 TO
50 KT. SEAS 3.5 TO 6.5 M. ELSEWHERE NW OF A LINE FROM 31N70W TO
49N47W TO 56N55W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.

...HEAVY FREEZING SPRAY WARNING... 
.LIGHT TO MODERATE FREEZING SPRAY N OF 52N W OF 51W. 
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A
LINE FROM 53N53W TO 61N58W TO 63N55W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY W OF A LINE FROM 50N54W TO 52N50W TO 59N54W TO
64N51W AND N OF A LINE FROM 47N64W TO 50N58W WITHIN THE GULF OF
SAINT LAWRENCE.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A
LINE FROM 55N56W TO 58N59W TO 67N55W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF 53N W OF 46W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM W OF A LINE FROM
52N52W TO 62N63W AND FROM 54N TO 62N E OF 42W.
.24 HOUR FORECAST DENSE FOG FROM 50N TO 63N BETWEEN 38W AND 54W
AND FROM 63N TO 67N BETWEEN 55W AND 64W. 
.48 HOUR FORECAST DENSE FOG N OF 62N E OF GREENLAND AND FROM 52N
TO 57N W OF 53W.

.FORECASTER HYDE. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 1800 UTC WED DEC 17.
24 HOUR FORECAST VALID 1800 UTC THU DEC 18.
48 HOUR FORECAST VALID 1800 UTC FRI DEC 19.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC STATIONARY FRONT FROM 31N48W TO 27N63W TO 21N76W. N OF
FRONT 
TO A LINE FROM 31N65W TO 26N76W NE TO E WINDS 20 TO 30 KT. SEAS 3
TO 
4 M. ELSEWHERE N OF 19N AND W OF A LINE FROM 31N37W TO 19N55W TO 
ANOTHER LINE FROM 31N65W TO 27N77W...INCLUDING ATLANTIC
EXPOSURES... 
WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL. 
.18 HOUR FORECAST LOW PRES NEAR 30N58W 1014 MB. COLD FRONT FROM
LOW 
CENTER TO 25N61W TO 23N65W. WITHIN 90 NM NW SEMICIRCLE OF LOW
CENTER 
WINDS 30 TO 40 KT. SEAS 3 TO 4.5 FT. ELSEWHERE N OF 26N AND W OF
LOW 
AND FRONT TO 64W N WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. N OF 26N
E 
OF FRONT TO 55W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
FROM 23N TO 27N BETWEEN 65W AND 75W AND E OF THE BAHAMAS E WINDS
20 
TO 25 KT. SEAS 2.5 M. REMAINDER OF AREA N OF 25N BETWEEN 55W AND 
65W...AND FROM 22N TO 25N W OF 62W WINDS 20 KT OR LESS. SEAS 2.5
M 
IN NW TO N SWELL.
.24 HOUR FORECAST LOW PRES NEAR 30N57W 1012 MB. COLD FRONT FROM
LOW 
CENTER TO 22N61W. OVER FORECAST WATERS WITHIN 120 NM NW
SEMICIRCLE 
OF LOW CENTER WINDS 30 TO 40 KT. SEAS 4 TO 6 M. ELSEWHERE N OF
26N 
AND W OF LOW AND FRONT TO 63W N WINDS 20 TO 30 KT. SEAS 2.5 TO 4
M. 
N OF 26N E OF FRONT TO 53W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO

3.5 M. REMAINDER OF THE AREA N OF 24N E OF 65W TO A LINE FROM
31N50W 
TO 24N61W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL.
.48 HOUR FORECAST LOW PRES NEAR 29N56W 1011 MB. COLD FRONT FROM
LOW 
CENTER TO 22N60W. N OF 29N W OF LOW AND FRONT TO 60W N TO NE
WINDS 
20 TO 30 KT. SEAS 4 TO 5 M IN N TO NE SWELL. N OF 27N E OF FRONT
TO 
52W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE N OF
22N 
E OF 65W TO A LINE FROM 31N50W TO 22N55W WINDS 20 KT OR LESS.
SEAS 
2.5 TO 4 M IN NE SWELL.

.SYNOPSIS AND FORECAST.
 
ATLC S OF A LINE FROM 24N35W TO 23N45W TO 20N55W NE TO E WINDS 20
TO 
25 KT. SEAS 2.5 TO 3.5 M IN MIXED NE AND NW SWELL. ELSEWHERE S OF
A 
LINE FROM 25N35W TO 24N45W TO 19N55W WINDS 20 KT OR LESS. SEAS
2.5 
TO 3 M IN MIXED NE AND NW SWELL. S OF 19N W OF 55W WINDS 20 KT OR

LESS. SEAS 2.5 TO 3 M IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST S OF 23N E OF 50W NE TO E WINDS 20 TO 25 KT.
SEAS 
2.5 TO 3.5 M IN MIXED NE AND NW SWELL. ELSEWHERE E OF A LINE FROM

31N50WW TO 19N61W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES... 
WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST S OF 24N E OF 50W NE TO E WINDS 20 TO 25 KT.
SEAS 
2.5 TO 3.5 M IN MIXED NE AND NW SWELL. ELSEWHERE E OF A LINE FROM

31N41W TO 26N50W TO 17N61W...INCLUDING IN ATLANTIC EXPOSURES AND 
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED NE AND
NW 
SWELL.

.ATLC 24 HOUR FORECAST N OF 28N BETWEEN 75W AND 80W SE WINDS 20
TO 
25 KT. SEAS LESS THAN 2.5 M. FROM 22N TO 27N SW OF A LINE FROM 
27N74W TO 23N68W AND E OF THE BAHAMAS E TO SE WINDS 20 TO 25 KT. 
SEAS 2.5 M. 
.42 HOUR FORECAST COLD FRONT JUST W OF AREA. N OF 29N BETWEEN 71W

AND 80W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.48 HOUR FORECAST COLD FRONT FROM 31N78W TO 29N81W. N OF 29N E OF

FRONT TO 70W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.

.CARIBBEAN FORECAST FROM 11N TO 13N BETWEEN 74W AND 77.5W...NE TO
E 
WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. 
.12 HOUR FORECAST FROM 11N TO 13N BETWEEN 70W AND 76W...INCLUDING

THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.

.24 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E
WINDS 
20 TO 25 KT. SEAS LESS THAN 2.5 M. 
.36 HOUR FORECAST FROM 11N TO 15N BETWEEN 70W AND 77W...INCLUDING

THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 M.
FROM 
15N TO 17.5N BETWEEN 70W AND 74W E WINDS 20 TO 25 KT. SEAS LESS
THAN 
2.5 M.
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 78W NE TO E
WINDS 
20 TO 25 KT. SEAS 2.5 M.

.GULF OF AMERICA FROM 23N TO 25N BETWEEN 80W AND 85W...INCLUDING 
THE STRAITS OF FLORIDA...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5
M. 
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.


.FORECASTER GR. NATIONAL HURRICANE CENTER.

$$