HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC THU DEC 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC DEC 11.
24 HOUR FORECAST VALID 0600 UTC DEC 12.
48 HOUR FORECAST VALID 0600 UTC DEC 13.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER E OF AREA 56N30W 958 MB MOVING NE
20 KT. A FRONT EXTENDS FROM LOW CENTER TO 53N35W TO 56N40W TO
61N40W TO 65N34W. WITHIN 120 NM W OF THE FRONT WINDS 50 TO 65 KT.
SEAS 8 TO 13.5 M...HIGHEST NEAR 52N35W. ALSO WITHIN 720 NM SW
QUADRANT...AND WITHIN 180 NM W OF THE FRONT WINDS 35 TO 50 KT.
SEAS 6 TO 11 M. ELSEWHERE FROM 40N TO 50N E OF 50W...AND N OF 60N
E OF GREENLAND WINDS 25 TO 35 KT. SEAS 3.5 TO 7 M. OTHERWISE FROM
33N TO 40N E OF 44W...AND FROM 50N TO 59N E OF 55W WINDS TO 25
KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW ABSORBED E OF AREA. CONDITIONS DESCRIBED
WITH LOW 61N25WBELOW.
...STORM WARNING...
.06 HOUR FORECAST LOW E OF AREA NEAR 61N27W 934 MB. N OF 46N E OF
42W WINDS 40 TO 55 KT. SEAS 7 TO 12 M...HIGHEST NEAR 52N35W.
.24 HOUR FORECAST LOW E OF AREA 61N25W 945 MB. N OF 55N E OF 43W
WINDS 25 TO 40 KT. SEAS 6 TO 9 M. ELSEWHERE...EXCEPT WHERE
DESCRIBED WITH LOW 54N49W BELOW...FROM 50N TO 60N E OF 50W WINDS
TO 25 KT. SEAS 3.5 TO 6.5 M.
.48 HOUR FORECAST LOW WELL NE OF AREA. CONDITIONS DESCRIBED WITH
LOW 57N45W BELOW.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER INLAND NEAR 45N73W 986 MB MOVING NE
25 KT. WITHIN 720 NM SE AND 780 NM S QUADRANTS WINDS 25 TO 35 KT.
SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER INLAND 51N64W 979
MB AND SECOND CENTER 54N49W 978 MB. BETWEEN 300 NM AND 660 NM SE
QUADRANT OF SECOND CENTER WINDS 35 TO 50 KT. SEAS 5 TO 7.5 M.
ELSEWHERE S OF 53N E OF 74W WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M
IN MIXED SWELL.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 57N45W 960
MB. WITHIN 120 NM N AND 540 NM S QUADRANTS...AND FROM 39N TO 45N
BETWEEN 50W AND 64W WINDS 35 TO 50 KT. SEAS 5 TO 8 M. ELSEWHERE
FROM 33N TO 60N E OF 50W...N OF 60N E OF GREENLAND...AND 34N TO
55N BETWEEN 50W AND 68W...INCLUDING WITHIN THE GULF OF SAINT
LAWRENCE...WINDS 25 TO 35 KT. SEAS 3 TO 6.5 IN MIXED
SWELL...EXCEPT SEAS 2.5 TO 4 M WITHIN THE GULF OF SAINT
LAWRENCE.
...STORM WARNING...
.24 HOUR FORECAST NEW LOW TO FORM NEAR 43N54W 992 MB. WITHIN 540
NM SE SEMICIRCLE AND 780 NM S QUADRANT WINDS 25 TO 40 KT. SEAS 4
TO 6.5 M.
.36 HOUR FORECAST LOW 49N40W 985 MB. WITHIN 480 NM SE AND 540 NM
S QUADRANTS WINDS 35 TO 50 KT. SEAS 5 TO 8 M.
.48 HOUR FORECAST LOW E OF AREA AND ASSOCIATED CONDITIONS
DESCRIBED WITH LOW 57N45W ABOVE.
...GALE WARNING...
.LOW 43N61W 1006 MB MOVING NE 20 KT THEN DISSIPATING. WITHIN 600
NM SE SEMICIRCLE WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 54N49W ABOVE.
...GALE WARNING...
.N OF 62N BETWEEN 54W AND 62W AREA OF N WINDS 25 TO 35 KT. SEAS
2.5 TO 4 M.
.24 HOUR FORECAST N OF 62N BETWEEN 54W AND 61W AREA OF N WINDS 25
TO 40 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST N OF 55N BETWEEN 53W AND 63W AREA OF N TO NE
WINDS 30 TO 45 KT. SEAS 4 TO 6.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY FROM 52N TO 56N W OF 54W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 49N WITHIN THE
GULF OF SAINT LAWRENCE...FROM 50N TO 58N W OF 50W...AND N OF 61N
W OF 58W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF
58W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 60N W OF
58W...AND NW OF A LINE FROM 46N64W TO 54N52W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE
FROM 61N65W TO 63N60W TO 67N56W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF 59N W OF 57W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 51N TO 58N E OF
61W...N OF 57N E OF 42W...AND FROM 45N TO 52N BETWEEN 44W AND
67W...INCLUDING WITHIN THE GULF OF SAINT LAWRENCE.
.24 HOUR FORECAST DENSE FOG N OF 56N E OF 43W...N OF 62N W OF
57W...AND FROM 42N TO 56N BETWEEN 37W AND 52W.
.48 HOUR FORECAST DENSE FOG WITHIN 540 NM NW OF A LINE FROM
51N52W TO 60N26W...AND N OF 60N W OF 55W.
.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 THU DEC 11.
24 HOUR FORECAST VALID 0600 UTC FRI DEC 12.
48 HOUR FORECAST VALID 0600 UTC SAT DEC 13.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 24N35W TO 20N59W TO 15N61W TO 06N52W TO 07N35W TO
24N35W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...NE TO
E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST WITHIN 28N35W TO 25N58W TO 20N63W TO 10N60W TO
06N53W TO 07N35W TO 28N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST WITHIN 26N35W TO 24N52W TO 20N63W TO 07N58W TO
07N35W TO 26N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 4.0 M.
.ATLC WITHIN 31N74W TO 31N81W TO 29N80W TO 29N78W TO 30N74W TO
31N74W W WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST COLD FRONT FROM 31N63W TO 21N75W. WITHIN 31N52W
TO 31N64W TO 28N63W TO 28N59W TO 30N54W TO 31N52W SW WINDS 20 TO
30 KT. SEAS 2.5 TO 3.5 M. WITHIN 31N64W TO 31N74W TO 28N72W TO
29N68W TO 28N66W TO 29N64W TO 31N64W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.5 M IN W TO NW SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 31N57W TO 27N62W.
WITHIN 31N50W TO 31N66W TO 28N63W TO 27N59W TO 30N52W TO 31N50W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL.
.ATLC WITHIN 31N35W TO 31N60W TO 23N66W TO 28N42W TO 31N35W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N SWELL.
.24 HOUR FORECAST WITHIN 31N35W TO 31N43W TO 29N42W TO 28N40W TO
28N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N
SWELL.
.48 HOUR FORECAST WITHIN 31N35W TO 31N37W TO 29N40W TO 27N42W TO
27N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N
SWELL.
.CARIBBEAN WITHIN 14N70W TO 14N72W TO 15N75W TO 13N78W TO 11N77W
TO 11N71W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 14N72W TO 14N78W TO 12N79W TO 11N77W TO
12N74W TO 11N71W TO 14N72W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 12N72W TO 13N74W TO 12N78W TO 11N79W TO
11N75W TO 12N73W TO 12N72W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M. WITHIN 13N77W TO 13N79W TO 15N80W TO 12N81W TO 11N80W
TO 11N79W TO 13N77W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
E SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
$$