HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC FRI DEC 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 12.
24 HOUR FORECAST VALID 1800 UTC DEC 13.
48 HOUR FORECAST VALID 1800 UTC DEC 14.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER INLAND 50N61W 978 MB MOVING NE 15
KT AND SECOND CENTER 57N48W 963 MB MOVING N 10 KT TURNING S
AFTER 06 HOURS. FROM 37N TO 48N BETWEEN 53W AND 70W AND WITHIN
180 NM N QUADRANT OF SECOND LOW WINDS 35 TO 50 KT. SEAS 4 TO 8
M...HIGHEST NEAR 42N60W. ELSEWHERE S OF 52N BETWEEN 47W AND
72W...AND WITHIN 300 NM OF SECOND CENTER...INCLUDING WITHIN THE
GULF OF SAINT LAWRENCE...WINDS 25 TO 40 KT. SEAS 3.5 TO 7
M...EXCEPT SEAS TO 3 M WITHIN THE GULF OF SAINT LAWRENCE.
.06 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 55N53W 968 MB
AND SECOND CENTER 58N47W 960 MB. WITHIN 90 NM NW OF A LINE FROM
57N51W TO 59N43W...AND FROM 38N TO 47N BETWEEN 49W AND 67W WINDS
35 TO 50 KT. SEAS 4 TO 8 M...HIGHEST NEAR 43N58W.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 55N44W 964 MB.
FROM 43N TO 56N E OF 53W WINDS 35 TO 50 KT. SEAS 5 TO 9 M.
ELSEWHERE FROM 37N TO 58N E OF 65W...INCLUDING WITHIN THE GULF
OF SAINT LAWRENCE...WINDS 25 TO 40 KT. SEAS 4 TO 8 M IN MIXED
SWELL.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA NEAR
58N28W 963 MB. WITHIN 1020 NM SW QUADRANT WINDS 25 TO 40 KT.
SEAS 5 TO 9 M. ALSO FROM 35N TO 46N E OF 54W WINDS 20 TO 30 KT.
SEAS 3.5 TO 6.5 M IN MIXED SWELL.
...STORM WARNING...
.LOW 52N38W 983 MB MOVING NE 45 KT. E OF A LINE FROM 52N35W TO
43N47W TO 38N51W WINDS 35 TO 50 KT. SEAS 4 TO 7.5 M IN SW SWELL.
ELSEWHERE E OF A LINE FROM 53N35W TO 44N47W TO 31N56W TO 31N50W
TO 35N44W TO 37N35W WINDS 25 TO 40 KT. SEAS 3 TO 6 M IN S TO SW
SWELL.
.24 HOUR FORECAST LOW WELL E OF AREA AND CONDITIONS DESCRIBED
WITH LOW 55N44W ABOVE.
...STORM WARNING...
.18 HOUR FORECAST NEW COMPLEX LOW WITH MEAN CENTER 60N41W 968
MB. WITHIN 90 NM OF E GREENLAND COAST FROM 60N TO 63N WINDS 30
TO 45 KT. SEAS 3 TO 5.5 M. ELSEWHERE N OF 59N E OF 44W WINDS 20
TO 30 KT. SEAS 3 TO 5.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 61N38W 968 MB. N
OF 60N E OF GREENLAND WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
ELSEWHERE N OF 58N E OF 47W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5
M.
.30 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 61N39W 967 MB.
WITHIN 60 NM W OF A LINE FROM 56N45W TO 59N43W TO 63N39W WINDS
35 TO 50 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 62N39W 975 MB. N
OF 58N E OF 44W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.N OF 57N BETWEEN 54W AND 64W AREA OF N WINDS 25 TO 40 KT. SEAS
2.5 TO 5.5 M IN N SWELL.
.24 HOUR FORECAST N OF 55N BETWEEN 54W AND 60W AREA OF N WINDS
35 TO 45 KT. SEAS 4 TO 8 M IN N SWELL. ELSEWHERE N OF 54N
BETWEEN 53W AND 61W WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST N OF 55N W OF 44W WINDS 25 TO 40 KT. SEAS 3 TO
6 M.
...GALE WARNING...
.42 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 46N63W 1010 MB.
WITHIN 180 NM SE OF A LINE FROM 35N76W TO 40N63W TO 42N56W WINDS
25 TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 44N60W 1005 MB.
WITHIN 360 NM SE OF A LINE FROM 43N58W TO 39N63W TO 36N74W WINDS
25 TO 40 KT. SEAS 2.5 TO 4.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 62N E OF 58W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 60N63W TO
67N55W AND N OF 46N WITHIN THE GULF OF SAINT LAWRENCE.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF
58W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE
FROM 55N58W TO 60N59W TO 67N56W AND W OF 60W WITHIN THE GULF OF
SAINT LAWRENCE.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE
FROM 59N62W TO 67N55W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY WITHIN THE GULF OF SAINT LAWRENCE NW OF A LINE FROM 47N64W
TO 50N57W...AND N OF 50N W OF A LINE FROM 51N50W TO 54N51W TO
56N57W TO 60N54W TO 67N54W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 48N
BETWEEN 43W AND 47W...FROM 52N TO 61N BETWEEN 35W AND 62W...AND
WITHIN 60 NM W OF A LINE FROM 59N43W TO 64N38W.
.24 HOUR FORECAST DENSE FOG FROM 53N TO 56N BETWEEN 39W AND
46W...N OF 60N E OF 43W...AND N OF 56N BETWEEN 52W AND 58W.
.48 HOUR FORECAST DENSE FOG WITHIN 60 NM NW OF A LINE FROM
59N39W TO 60N40W TO 63N39W TO 63N35W...AND WITHIN 120 NM NW OF A
LINE FROM 38N71W TO 44N63W TO 48N56W.
.FORECASTER HYDE. OCEAN PREDICTION CENTER.
NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 1800 UTC FRI DEC 12.
24 HOUR FORECAST VALID 1800 UTC SAT DEC 13.
48 HOUR FORECAST VALID 1800 UTC SUN DEC 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC COLD FRONT FROM 31N59W TO 22N77W. N OF 29N E OF FRONT TO A
LINE FROM 31N50W TO 29N55W S TO SW WINDS 20 TO 25 KT. SEAS 2.5
TO 3
M. N OF 29N W OF FRONT TO 70W WINDS 20 KT OR LESS. SEAS 2.5 TO 3
M
IN NW SWELL.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N54W TO 23N80W. N OF
29 E
OF FRONT TO A LINE FROM 31N47W TO 29N52W WINDS 20 KT OR LESS.
SEAS
2.5 TO 3 M IN NW SWELL. N OF 29N W OF FRONT TO 63W WINDS 20 KT
OR
LESS. SEAS 2.5 TO 3 M IN NW SWELL.
.48 HOUR FORECAST FRONT N OF AREA. CONDITIONS MERGED.
.ATLC S OF 23N E OF 55W...AND S OF 20N BETWEEN 55W AND 60W NE TO
E
WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M PRIMARILY IN NE SWELL.
ELSEWHERE E AND S OF A LINE FROM 31N42W TO 27N42W TO 25N55W TO
22N62W TO 18N62W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED NE AND
N
SWELL...EXCEPT 3 TO 3.5 M N OF 24N E OF 38W.
.24 HOUR FORECAST S OF 24N E OF 55W...AND S OF 22N BETWEEN 55W
AND
63W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M PRIMARILY IN NE
SWELL. ELSEWHERE E OF 60W AND S OF A LINE FROM 30N35W TO 25N45W
TO
24N55W TO 23N60W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...
WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED NE AND N SWELL.
.48 HOUR FORECAST S OF 23N E OF 55W...AND S OF 22N BETWEEN 55W
AND
63W NE TO E WINDS 20 TO 25 KT. SEAS 3 TO 4 M PRIMARILY IN NE
SWELL.
ELSEWHERE E OF A LINE FROM 31N57W TO 2N68W TO 19N63W...INCLUDING
IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5
TO 3
M IN MIXED NE AND NW SWELL.
.CARIBBEAN FROM 10.5N TO 17N BETWEEN 70W AND 80W...INCLUDING THE
GULF OF VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M
IN
NE TO E SWELL.
.24 HOUR FORECAST FROM 11N TO 17.5N BETWEEN 70W ND
80W...INCLUDING
THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3
M
IN NE TO E SWELL.
.42 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 11N TO 16N BETWEEN 70W AND
78W...INCLUDING
THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.