HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 13.
24 HOUR FORECAST VALID 1800 UTC DEC 14.
48 HOUR FORECAST VALID 1800 UTC DEC 15.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 56N42W 961 MB MOVING E 20 KT. FROM
47N TO 56N E OF 51W...WITHIN 60 NM OF E GREENLAND COAST FROM 60N
TO 63N...AND N OF 60N BETWEEN 55W AND 60W WINDS 40 TO 55 KT. SEAS
4 TO 8.5 M. ELSEWHERE N OF 33N E OF 67W WINDS 25 TO 40 KT. SEAS
3.5 TO 7 M.
.24 HOUR FORECAST COMBINED LOW 58N28W 961 MB. FROM 43N TO 58N E
OF 47W WINDS 35 TO 45 KT. SEAS 4 TO 7.5 M. ELSEWHERE...EXCEPT
WHERE DESCRIBED BELOW WITH LOW 62N36W...E OF A LINE FROM 38N35W
TO 47N54W TO 61N65W TO 67N65W WINDS 25 TO 40 KT. SEAS 3.5 TO 6.5
M.
.48 HOUR FORECAST LOW E OF AREA. CONDITIONS DESCRIBED BELOW WITH
LOW 60N42W.
...STORM WARNING...
.24 HOUR FORECAST NEW COMPLEX LOW WITH FIRST CENTER 43N61W 1004
MB AND SECOND CENTER 39N68W 1004 MB. S OF 41N W OF 48W WINDS 25
TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST MERGED LOW 49N54W 968 MB. WITHIN 300 NM E OF A
FRONT FROM 46N50W TO 33N57W...WITHIN 480 NM W OF FRONT S OF
41N...WITHIN 240 NM NE...360 NM SW...AND 180 NM NW QUADRANTS
WINDS 40 TO 55 KT. SEAS 4 TO 8 M. ELSEWHERE S OF 58N E OF 75W
WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 62N36W 969 MB. WITHIN 240 NM SW
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4 TO 6.5 M.
.48 HOUR FORECAST LOW MOVED E OF AREA. CONDITIONS DESCRIBED BELOW
WITH LOW 60N42W.
...GALE WARNING...
.48 HOUR FORECAST NEW LOW 60N42W 986 MB. WITHIN 180 NM S AND 300
NM E QUADRANTS WINDS 25 TO 40 KT. SEAS 3.5 TO 6 M. ELSEWHERE
WITHIN 360 NM NE AND N OF A LINE FROM 62N55W TO 56N44W TO 52N35W
WINDS 20 TO 30 KT. SEAS 3 TO 6 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF 58W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 54N W OF 57W...WITHIN 60 NM
OF W GREENLAND COAST N OF 66N...AND WITHIN THE GULF OF SAINT
LAWRENCE W OF 58W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 59N W OF
58W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N AND W OF A
LINE FROM 46N64W TO 49N49W TO 54N50W TO 57N57W TO 64N52W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF
59W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW AND N OF A
LINE FROM 37N76W TO 49N55W TO 57N57W TO 60N45W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 61N TO 63N E OF
GREENLAND...FROM 52N TO 57N BETWEEN 38W AND 46W...AND N OF 61N
BETWEEN 56W AND 59W.
.24 HOUR FORECAST DENSE FOG FROM 58N TO 63N E OF 41W AND NW OF A
LINE FROM 38N72W TO 48N57W.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 54N BETWEEN 36W AND 62W.
.FORECASTER JOSEPH. 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 SAT DEC 13.
24 HOUR FORECAST VALID 1800 UTC SUN DEC 14.
48 HOUR FORECAST VALID 1800 UTC MON DEC 15.
.WARNINGS.
...ATLC GALE WARNING...
.27 HOUR FORECAST COLD FRONT FROM 31N72W TO 28N81W. NW OF FRONT
NW
TO N WINDS 20 TO 30 KT. SEAS BUILDING TO 2.5 M. N OF 29N E OF
FRONT
TO 60W S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST COLD FRONT FROM 31N67W TO 27N80W. N OF 29N
BETWEEN
74W AND 80W N WINDS 30 TO 35 KT WITH HIGHER GUSTS. SEAS 3 TO 4
M.
ELSEWHERE N OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
N
OF 28N E OF FRONT TO A LINE FROM 31N51W TO 28N55W S TO SW WINDS
20
TO 30 KT. SEAS 2.5 M.
.42 HOUR FORECAST COLD FRONT FROM 31N62W TO 27N70W TO 25N80W. N
OF
FRONT NW TO N WINDS 20 TO 30 KT WITH HIGHER GUSTS. SEAS 3 TO 4
M. N
OF 30N E OF FRONT TO 60W SW WINDS 25 TO 30 KT WITH HIGHER GUSTS.
SEAS 3 TO 3.5 M. ELSEWHERE N OF 28N E OF FRONT TO A LINE FROM
31N51W
TO 28N55W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. FROM 26N
TO
28N BETWEEN 62W AND 64W S TO SW WINDS 20 TO 25 KT. SEAS TO 2.5
M.
.48 HOUR FORECAST COLD FRONT FROM 31N59W TO 25N70W TO 24N80W. N
OF
FRONT TO A LINE FROM 31N73W TO 26N80W NW TO N WINDS 20 TO 25 KT.
SEAS 3 TO 4.5 M IN NW SWELL. ELSEWHERE N OF FRONT WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN NW SWELL. N OF 30N E OF FRONT TO 55W
SW
WINDS 25 TO 30 KT. SEAS 3 TO 4 FT. ELSEWHERE N OF 29N E OF FRONT
TO 47W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.SYNOPSIS AND FORECAST.
.ATLC STATIONARY FRONT FROM 31N55W TO 22N77W. N OF 27N W OF
FRONT TO
63W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW SWELL. N OF 27N E
OF
FRONT TO A LINE FROM 31N46W TO 27N55W WINDS 20 KT OR LESS. SEAS
2.5
TO 3 M IN NW SWELL.
.24 HOUR FORECAST FRONT N OF AREA. CONDITIONS MERGED.
.ATLC S OF 25N E OF 55W...AND S OF 22N BETWEEN 55W AND 60W NE TO
E
WINDS 20 TO 25 KT. SEAS 3 TO 4 M PRIMARILY IN NE SWELL.
ELSEWHERE S
OF A LINE FROM 30N35W TO 25N44W TO 24N55W TO 20N64W...INCLUDING
IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5
TO 3
M IN MIXED NW AND NE SWELL...EXCEPT 3 TO 4 FT IN N SWELL N OF
26N E
OF 40W.
.24 HOUR FORECAST S OF 25N E OF 65W NE TO E WINDS 20 TO 25 KT.
SEAS
3 TO 4 M PRIMARILY IN NE SWELL. ELSEWHERE E OF A LINE FROM
31N58W TO
22N68W TO 19N65W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED NW AND
NE
SWELL.
.48 HOUR FORECAST S OF 22N E OF 55W NE TO E WINDS 20 TO 25 KT.
SEAS
3 TO 4 M PRIMARILY IN NE SWELL. ELSEWHERE E OF 60W...INCLUDING
IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5
TO 3
M IN MIXED NW AND NE SWELL.
.CARIBBEAN FROM 11N TO 18N BETWEEN 70W AND 80W...INCLUDING THE
GULF
OF VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST FROM 11N TO 15N BETWEEN 70W AND
78W...INCLUDING
THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3
M
IN NE TO E SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.GULF OF AMERICA 21 HOUR FORECAST COLD FRONT FROM 30N86W TO
26N97W.
N OF FRONT N WINDS 20 TO 30 KT WITH HIGHER GUSTS. SEAS BUILDING
TO
2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST COLD FRONT FROM 27N82W TO 25.5N97W. N OF FRONT
N
TO NE WINDS 20 TO 30 KT WITH HIGHER GUSTS. SEAS 2.5 TO 3 M.
.36 HOUR FORECAST COLD FRONT FROM 26N80W TO 24N97W. N OF FRONT N
TO
NE WINDS 20 TO 25 KT WITH HIGHER GUSTS. SEAS 2.5 TO 3 M.
.48 HOUR FORECAST COLD FRONT FROM 24N80W TO 22N97W. N OF FRONT
TO
27N WINDS 20 KT OR LESS. SEAS 2.5 M IN N SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER GR. NATIONAL HURRICANE CENTER.
$$