HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT DEC 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 27.
24 HOUR FORECAST VALID 1800 UTC DEC 28.
48 HOUR FORECAST VALID 1800 UTC DEC 29.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 35N66W 998 MB MOVING NE 35 KT AND
RAPIDLY INTENSIFYING. S OF 41N BETWEEN 62W AND 76W WINDS 25 TO 40
KT. SEAS 2.5 TO 5 M.
.06 HOUR FORECAST LOW 35N61W 989 MB. WITHIN 150 NM SW SEMICIRCLE
WINDS 40 TO 50 KT. SEAS 4 TO 6 M.
.18 HOUR FORECAST LOW 37N53W 973 MB. WITHIN 120 NM S AND 180 NM W
QUADRANTS WINDS 50 TO 65 KT. SEAS 6 TO 9 M.
.24 HOUR FORECAST LOW 38N51W 966 MB. WITHIN 150 NM S SEMICIRCLE
AND 180 NM NW QUADRANT WINDS 50 TO 75 KT. SEAS 6 TO 10.5 M.
ELSEWHERE FROM 35N TO 43N BETWEEN 46W AND 55W WINDS 40 TO 50 KT.
SEAS 4 TO 7 M. ALSO S OF 45N BETWEEN 40W AND 68W WINDS 25 TO 40
KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW 42N49W 966 MB. WITHIN 420 NM S AND SW
QUADRANTS AND 180 NM NE AND E OF A FRONT FROM 46N46W TO 41N38W
WINDS 40 TO 50 KT. SEAS 4 TO 8 M. ELSEWHERE S OF 51N E OF 62W
WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
...STORM WARNING...
.LOW 46N53W 977 MB MOVING NW 15 KT. WITHIN 180 NM SW...360 NM
W...AND 480 NM NW QUADRANTS AND FROM 44N TO 53N BETWEEN 37W AND
47W WINDS 40 TO 50 KT. SEAS 3.5 TO 7 M. ELSEWHERE FROM 35N TO 60N
E OF 65W WINDS 25 TO 40 KT. SEAS 4 TO 9 M...HIGHEST NEAR 40N48W.
ALSO S OF 35N E OF 60W WINDS LESS THAN 25 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 50N56W 984 MB. WITHIN 120 NM OF THE S AND W
GREENLAND COAST S OF 62N WINDS 40 TO 50 KT. SEAS 5 TO 7 M.
ELSEWHERE N OF 43N E OF 68W...NOT INCLUDING THE WATERS E OF
GREENLAND...WINDS 25 TO 40 KT. SEAS 3.5 TO 7 M.
.48 HOUR FORECAST LOW 61N63W 998 MB. WITHIN 120 NM OF THE S AND W
GREENLAND COAST S OF 65N WINDS 40 TO 55 KT. SEAS 6 TO 8.5 M.
ELSEWHERE N OF 56N W OF 42W...AND E OF A LINE FROM 60N49W TO
51N44W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.48 HOUR FORECAST LOW WELL INLAND. S OF 44N W OF 64W WINDS 25 TO
40 KT. SEAS 2.5 TO 4.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY FROM 56N TO 61N W OF 60W AND
WITHIN THE GULF OF SAINT LAWRENCE W OF 62W. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 42N65W TO 53N54W
TO 60N57W TO 67N53W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY FROM 57N TO
63N W OF 60W AND WITHIN THE GULF OF SAINT LAWRENCE W OF 60W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY WITHIN THE
GULF OF SAINT LAWRENCE AND W OF A LINE FROM 54N55W TO 61N62W.
.SYNOPSIS AND FORECAST.
.N OF 60N W OF 35W WINDS 20 TO 30 KT. SEAS 3 TO 6 M IN MIXED
SWELL.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 57N
BETWEEN 44W AND 62W AND N OF 63N BETWEEN GREENLAND COAST AND
55W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 56N BETWEEN 52W AND 62W
AND W OF A LINE FROM 56N60W TO 67N54W.
.48 HOUR FORECAST DENSE FOG N OF 60N W OF GREENLAND AND FROM 44N
TO 57N BETWEEN 44W AND 54W.
.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 27.
24 HOUR FORECAST VALID 1800 UTC SUN DEC 28.
48 HOUR FORECAST VALID 1800 UTC MON DEC 29.
.WARNINGS.
...GULF OF AMERICA GALE WARNING...
.GULF OF AMERICA 39 HOUR FORECAST COLD FRONT FROM 29.5N92W TO
27N97W. WITHIN 29N93W TO 30N92W TO 30N94W TO 29N96W TO 27N97W TO
28N94W TO 29N93W N WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST COLD FRONT FROM 30N84W TO 24N77W TO 22N97W.
WITHIN 24N97W TO 25N98W TO 22N98W TO 23N97W TO 24N97W NW TO N
WINDS 30 TO 40 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 29N86W TO
30N94W TO 29N96W TO 25N97W TO 25N95W TO 26N91W TO 29N86W N TO NE
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.SYNOPSIS AND FORECAST.
.ATLC COLD FRONT FROM 31N44W TO 27N53W THEN STATIONARY FRONT TO
26N60W TO 27N70W. WITHIN 31N64W TO 31N71W TO 30N71W TO 29N69W TO
29N67W TO 31N64W W WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN N
SWELL. ELSEWHERE WITHIN 31N35W TO 31N71W TO 26N68W TO 23N55W TO
19N48W TO 19N43W TO 31N35W W WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M
IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N51W TO 26N70W TO 27N78W.
WITHIN 31N35W TO 31N72W TO 20N57W TO 22N41W TO 31N35W W WINDS 20
TO 30
KT. SEAS 2.5 TO 4.5 M IN NW TO N SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N77W TO 21N55W TO 22N65W. E
OF FRONT WITHIN 31N35W TO 31N38W TO 27N41W TO 21N53W TO 22N42W
TO 22N35W TO 31N35W SW TO W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M
IN NW SWELL. W OF FRONT WITHIN 31N38W TO 31N66W TO 23N62W TO
21N54W TO 27N42W TO 31N38W NW WINDS 20 TO 30 KT. SEAS 4.0 TO 5.5
M IN NW TO N SWELL.
.ATLC WITHIN 09N35W TO 10N38W TO 09N42W TO 07N45W TO 07N35W TO
09N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.24 HOUR FORECAST WITHIN 13N42W TO 13N51W TO 11N55W TO 06N52W TO
07N41W TO 09N43W TO 13N42W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NW TO N SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
.CARIBBEAN WITHIN 13N74W TO 14N76W TO 13N77W TO 11N77W TO 10N76W
TO 12N74W TO 13N74W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
$$