HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT DEC 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC DEC 13.
24 HOUR FORECAST VALID 0000 UTC DEC 14.
48 HOUR FORECAST VALID 0000 UTC DEC 15.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 58N47W 961 MB MOVING SW 10 KT THEN
TURNING E AFTER 12 HOURS AND SECOND CENTER 55N53W 967 MB MOVING E
20 KT. WITHIN 180 NM SE QUADRANT OF FIRST CENTER...FROM 40N TO
46N BETWEEN 53N62W...AND WITHIN 120 NM N SEMICIRCLE OF SECOND
CENTER WINDS 35 TO 50 KT. SEAS 4 TO 8 M...HIGHEST NEAR 43N56W.
ELSEWHERE...EXCEPT WHERE DESCRIBED WITH LOW 56N30W BELOW...FROM
34N TO 60N E OF 54W AND FROM 34N TO 48N BETWEEN 53W AND
70W...INCLUDING WITHIN THE GULF OF SAINT LAWRENCE...WINDS 25 TO
35 KT. SEAS 3 TO 6.5 M IN MIXED SWELL.
.18 HOUR FORECAST COMBINED LOW NEAR 56N44W 958 MB. WITHIN 120 NM
S AND SW QUADRANTS WINDS 45 TO 60 KT. SEAS 6 TO 8.5 M.
.24 HOUR FORECAST LOW 56N39W 956 MB. WITHIN 360 NM S SEMICIRCLE
WINDS 45 TO 60 KT. SEAS 6 TO 9 M. ALSO FROM 40N TO 57N E OF
50W...AND WITHIN 120 NM EITHER SIDE OF A LINE FROM 54N50W TO
60N56W TO 67N57W WINDS 30 TO 45 KT. SEAS 5 TO 8.5 M....HIGHEST S
OF CENTER. ELSEWHERE FROM 33N TO 60N E OF 58W...AND N OF 54N E OF
62W WINDS 20 TO 30 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA NEAR
60N24W 963 MB. WITHIN 540 NM NE OF A LINE FROM 41N35W TO
66N62W...AND N OF 60N E OF GREENLAND WINDS 30 TO 45 KT. SEAS 4 TO
7.5 M...HIGHEST NEAR 59N47W AND 49N37W. ELSEWHERE N OF 37N NE OF
A LINE FROM 40N45W TO 64N63W WINDS 20 TO 30 KT. SEAS 3 TO 4.5 M.
...GALE WARNING...
.LOW E OF AREA 56N30W 985 MB MOVING NE 40 KT. SE OF A FRONT FROM
50N35W TO 35N51W N OF 35N WINDS 25 TO 40 KT. SEAS 4 TO 7 M IN SW
SWELL.
.24 HOUR FORECAST LOW WELL E OF AREA AND CONDITIONS DESCRIBED
WITH LOW 56N39W ABOVE.
...GALE WARNING...
.12 HOUR FORECAST NEW LOW 63N35W 964 MB. N OF 57N E OF 44W WINDS
25 TO 35 KT. SEAS 2.5 TO 5 IN MIXED SWELL.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 62N35W 964 MB.
WITHIN 120 NM OF E GREENLAND COAST N OF 60N WINDS 30 TO 45 KT.
SEAS 4 TO 6 M IN N TO NE SWELL. ELSEWHERE N OF 60N E OF GREENLAND
WINDS 20 TO 30 KT. SEAS 3.5 TO 5 M.
.36 HOUR FORECAST COMBINED LOW NEAR 53N35W 962 MB. N OF 61N E OF
GREENLAND WINDS 30 TO 45 KT. SEAS 5 TO 7 M IN MIXED SWELL.
.48 HOUR FORECAST LOW 60N36W 968 MB. WITHIN 180 NM W SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE CONDITIONS DESCRIBED
WITH LOW 60N24W ABOVE.
...GALE WARNING...
.N OF 63N BETWEEN 55W AND 62W AREA OF N WINDS 35 TO 45 KT. SEAS 4
TO 6 M. ELSEWHERE WITHIN 300 NM NW OF A FRONT FROM 56N60W TO
67N52W AREA OF N TO NE WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 56N39W ABOVE.
...GALE WARNING...
.36 HOUR FORECAST NEW COMPLEX LOW WITH FIRST CENTER NEAR 42N61W
1014 MB AND SECOND CENTER 39N69W 1011 MB. WITHIN 360 NM SE
SEMICIRCLE OF BOTH CENTERS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M IN
SW SWELL.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 48N58W 998 MB AND
SECOND CENTER 41N64W 1001 MB. WITHIN 480 NM N AND E OF A LINE
FROM 31N81W TO 31N65W TO 42N43W WINDS 25 TO 40 KT. SEAS 2.5 TO
5.5 M IN MIXED SWELL.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 62N W OF 58W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 59N63W TO
67N53W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N W OF
57W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N AND W OF A LINE
FROM 47N63W TO 51N52W TO 60N57W TO 67N53W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE
FROM 58N60W TO 67N55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY
NW OF A LINE FROM 37N74W TO 44N66W AND NW OF ANOTHER LINE FROM
47N63W TO 52N51W TO 60N54W TO 65N52W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 48N TO 60N W OF
35W...N OF 60N E OF GREENLAND...AND N OF 60N W OF 57W.
.24 HOUR FORECAST DENSE FOG N OF 52N E OF 47W...AND WITHIN 180 NM
EITHER SIDE OF A LINE FROM 55N50W TO 67N58W.
.48 HOUR FORECAST DENSE FOG FROM 60N TO 64N E OF GREENLAND...AND
FROM 40N TO 51N BETWEEN 41W AND 68W...INCLUDING WITHIN THE GULF
OF SAINT LAWRENCE.
.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 0000 UTC SAT DEC 13.
24 HOUR FORECAST VALID 0000 UTC SUN DEC 14.
48 HOUR FORECAST VALID 0000 UTC MON DEC 15.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 31N52W TO 31N69W TO 28N64W TO 29N57W TO 31N52W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL.
.24 HOUR FORECAST WITHIN 31N43W TO 31N64W TO 28N66W TO 26N57W TO
26N52W TO 31N43W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NW
SWELL.
.48 HOUR FORECAST CONDITIONS TO MERGE WITH AREA OF WINDS AND
SEAS DESCRIBED BELOW.
.ATLC WITHIN 31N35W TO 31N40W TO 26N43W TO 25N35W TO 31N35W
WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN N SWELL.
.24 HOUR FORECAST WITHIN 29N35W TO 28N40W TO 25N47W TO 25N35W TO
29N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N SWELL.
.48 HOUR FORECAST CONDITIONS TO MERGE WITH AREA OF WINDS AND
SEAS DESCRIBED BELOW.
.ATLC WITHIN 25N35W TO 21N43W TO 20N55W TO 12N60W TO 17N47W TO
14N35W TO 25N35W...INCLUDING IN ATLANTIC EXPOSURES...NE TO E
WINDS 20 TO 25 KT. SEAS 2.5 TO 4.0 M IN MIXED N AND E SWELL.
WITHIN 10N41W TO 10N44W TO 11N48W TO 07N50W TO 07N40W TO 08N43W
TO 10N41W NE TO E WINDS 20 TO 25 KT. SEAS 3.0 TO 3.5 M IN E
SWELL. ELSEWHERE WITHIN 26N35W TO 23N60W TO 12N62W TO 06N54W TO
07N35W TO 26N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES....WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN MIXED N AND
E
SWELL.
.24 HOUR FORECAST WITHIN 21N35W TO 23N38W TO 19N45W TO 20N58W TO
14N42W TO 14N35W TO 21N35W NE TO E WINDS 20 TO 25 KT. SEAS 3.0
TO 4.5 M IN MIXED N AND E SWELL. ELSEWHERE WITHIN 24N35W TO
27N62W TO 21N67W TO 07N57W TO 07N35W TO 24N35W...INCLUDING IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5
TO 4.0 M IN MIXED N AND E SWELL.
.48 HOUR FORECAST WITHIN 21N35W TO 23N36W TO 20N50W TO 11N45W TO
12N41W TO 10N36W TO 21N35W NE TO E WINDS 20 TO 25 KT. SEAS 3.0
TO 4.0 M IN MIXED N AND NE SWELL. ELSEWHERE WITHIN 25N35W TO
23N50W TO 31N59W TO 23N69W TO 07N57W TO 07N35W TO 25N35W...
INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 4.0 M IN MIXED N AND NE SWELL. REMAINDER OF
AREA WITHIN 31N35W TO 31N55W TO 26N55W TO 25N35W TO 31N35W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NW SWELL.
.CARIBBEAN WITHIN 12N71W TO 13N71W TO 13N75W TO 11N75W TO 12N73W
TO 11N67W TO 12N71W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 14N73W TO
16N78W TO 16N81W TO 12N82W TO 10N79W TO 11N75W TO 14N73W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST WITHIN 15N74W TO 13N74W TO 13N76W TO 11N75W TO
12N73W TO 11N70W TO 15N74W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 30 KT. SEAS TO 3.0 M. WITHIN 18N72W TO 17N72W
TO 18N73W TO 15N71W TO 18N72W E WINDS 20 TO 25 KT. SEAS TO 2.5
M. ELSEWHERE WITHIN 18N76W TO 15N81W TO 11N80W TO 11N76W TO
13N75W TO 14N65W TO 18N76W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M
IN E SWELL.
.48 HOUR FORECAST WITHIN 13N71W TO 13N74W TO 12N74W TO 11N71W TO
12N71W TO 11N70W TO 13N71W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 16N74W
TO 16N78W TO 14N80W TO 12N80W TO 11N78W TO 14N71W TO 16N74W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.GULF OF AMERICA 39 HOUR FORECAST WITHIN 30N88W TO 30N92W TO
30N94W TO 28N95W TO 29N92W TO 30N88W N TO NE WINDS 20 TO 30 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 29N84W TO 30N88W TO 28N97W TO 26N96W TO
26N89W TO 28N83W TO 29N84W N TO NE WINDS 20 TO 30 KT. SEAS TO
3.0 M IN N TO NE SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.
$$