North Atlantic High Seas Forecast

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FZNT01 KWBC 151012
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC TUE APR 15 2025

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

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 0600 UTC APR 15. 
24 HOUR FORECAST VALID 0600 UTC APR 16.
48 HOUR FORECAST VALID 0600 UTC APR 17.

.WARNINGS.

...GALE WARNING...
.COMPLEX LOW WITH FIRST CENTER 48N56W 982 MB MOVING NE 20 KT AND
SECOND CENTER 43N52W 994 MB MOVING NE 25 KT. WITHIN 540 NM NE AND
240 NM NW QUADRANTS OF FIRST CENTER...INCLUDING WITHIN THE GULF
OF SAINT LAWRENCE...WITHIN 180 NM N AND E OF A FRONT FROM FIRST
CENTER TO 51N50W TO 46N44W TO 34N48W...AND WITHIN 600 NM S
SEMICIRCLE OF SECOND CENTER WINDS 25 TO 35 KT. SEAS 10 TO 21
FT...EXCEPT SEAS 8 TO 13 FT WITHIN THE GULF OF SAINT
LAWRENCE...HIGHEST S OF SECOND CENTER. ELSEWHERE S OF 55N BETWEEN
41W AND 67W WINDS TO 25 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 51N44W 992 MB AND
SECOND NEW CENTER 54N56W 996 MB. WITHIN 480 NM N OF A FRONT FROM
FIRST CENTER TO SECOND CENTER TO 50N35W...AND FROM 36N TO 49N E
OF 63W WINDS 25 TO 40 KT. SEAS 9 TO 19 FT...HIGHEST S OF SECOND
CENTER. ELSEWHERE FROM 50N TO 60N W OF 58W...AND S OF 50N E OF
54W...EXCEPT S OF 34N E OF 46W...WINDS TO 25 KT. SEAS 8 TO 15
FT.
.48 HOUR FORECAST LOW E OF AREA 48N23W 1000 MB. FROM 38N TO 55N E
OF 40W WINDS 20 TO 30 KT. SEAS 9 TO 18 FT. ELSEWHERE FROM 35N TO
60N W OF 44W WINDS TO 25 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.LOW INLAND 40N77W 1002 MB MOVING NE 15 KT THEN DISSIPATING. S OF
38N W OF 69W WINDS 20 TO 30 KT. SEAS TO 9 FT.
.09 HOUR FORECAST NEW LOW INLAND NEAR 45N72W 990 MB. FROM 33N TO
40N BETWEEN 63W AND 78W WINDS 25 TO 35 KT. SEAS TO 11 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER INLAND 47N67W 980
MB. FROM 32N TO 50N BETWEEN 54W AND 75W WINDS 25 TO 35 KT. SEAS 8
TO 13 FT. ELSEWHERE WITHIN THE GULF OF SAINT LAWRENCE WINDS TO 25
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER INLAND NEAR 51N65W
986 MB. BETWEEN 480 NM AND 840 NM NE QUADRANT...AND FROM 35N TO
51N BETWEEN 55W AND 74W...INCLUDING WITHIN THE GULF OF SAINT
LAWRENCE...WINDS 25 TO 35 KT. SEAS 9 TO 19 FT...HIGHEST NEAR
58N56W...EXCEPT SEAS TO 8 FT WITHIN THE GULF OF SAINT LAWRENCE.
ELSEWHERE...EXCEPT WHERE DESCRIBED WITH LOW 42N55W BELOW...N OF
33N BETWEEN 40W AND 71W WINDS TO 25 KT. SEAS 8 TO 14 FT.

.SYNOPSIS AND FORECAST.

.N OF 53N E OF 45W AREA OF N TO NE WINDS TO 25 KT. SEAS 8 TO 13
FT.
.24 HOUR FORECAST N OF 56N E OF 40W AREA OF NE WINDS TO 25 KT.
SEAS 8 TO 14 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 49N27W IN
WARNINGS SECTION ABOVE.

.48 HOUR FORECAST NEW LOW NEAR 42N55W 1006 MB. WITHIN 300 NM E
AND 420 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 60N BETWEEN 37W
AND 40W...AND FROM 43N TO 53N BETWEEN 37W AND 62W...INCLUDING
WITHIN THE GULF OF SAINT LAWRENCE E OF 62W.
.24 HOUR FORECAST DENSE FOG N OF 45N S OF A LINE FROM 56N54W TO
53N35W...AND FROM 41N TO 46N BETWEEN 56W AND 68W.
.48 HOUR FORECAST DENSE FOG WITHIN 480 NM SW OF A LINE FROM
47N42W TO 56N48W TO 59N60W.

.LIGHT FREEZING SPRAY N OF 60N W OF GREENLAND AND N OF 64N E OF
GREENLAND.
.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 62N W OF GREENLAND
AND N OF 64N E OF GREENLAND.
.48 HOUR FORECAST LIGHT FREEZING SPRAY N OF 64N E OF GREENLAND.

.FORECASTER ANDERSON. 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 0600 UTC TUE APR 15.
24 HOUR FORECAST VALID 0600 UTC WED APR 16.
48 HOUR FORECAST VALID 0600 UTC THU APR 17.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.WITHIN 12N74.5W TO 12N75W TO 11.5N76W TO 11N75.5W TO
11N74.5W TO 12N74.5W NE TO E WINDS 30 TO 35 KT. SEAS 10 TO 12 FT.
ELSEWHERE WITHIN 13N71W TO 14N76W TO 13N78W TO 11N79W TO 10N76W
TO
13N71W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO
30 KT. SEAS 8 TO 10 FT.
.06 HOUR FORECAST WITHIN 13N73W TO 14N76W TO 14N79W TO 10N79W TO
10N77W TO 12N73W TO 13N73W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO
12 FT.
.24 HOUR FORECAST WITHIN 12N70W TO 13N75W TO 12N78W TO 11N78W TO
11N74W TO 11N71W TO 12N70W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 12N74W TO 12N75W TO 12N76W TO 11N76W TO
11N74W TO 12N74W NE WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N79W TO 31N80W TO 30N80W TO 30N79W TO 31N79W SW
TO W WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.ATLC COLD FRONT FROM 31N50W TO 25N56W THEN STATIONARY TO 18N68W.

WITHIN 31N56W TO 31N66W TO 29N64W TO 28N61W TO 29N59W TO
31N56W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST FRONT DISSIPATED. WITHIN 31N49W TO 31N57W TO 
29N57W TO 28N55W TO 29N52W TO 31N49W WINDS 20 KT OR LESS. SEAS 
8 TO 9 FT IN NW SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.CARIBBEAN WITHIN 20N73W TO 20N74W TO 20N75W TO 19N76W
TO 19N75W TO 19N74W TO 20N73W...INCLUDING BETWEEN CUBA AND
JAMAICA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 17N76W TO 18N76W TO 17N77W TO 17N76W N
TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.CARIBBEAN WITHIN 18N70W TO 17N73W TO 16N73W TO 16N72W TO 17N70W
TO 18N70W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.GULF OF AMERICA 18 HOUR FORECAST WITHIN 20N90.5W TO 20.5N90.5W
TO 20.5N91W TO 20N91.5W TO 19N91.5W TO 19N91W TO
20N90.5W...INCLUDING WITHIN 60 NM OF COAST OF CAMPECHE...N TO
NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 20N91W TO 21N92W TO 21N93W TO 19N93W TO
19N92W TO 19N91W TO 20N91W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

.FORECASTER ERA. NATIONAL HURRICANE CENTER.

$$