HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC MON DEC 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC DEC 15.
24 HOUR FORECAST VALID 0000 UTC DEC 16.
48 HOUR FORECAST VALID 0000 UTC DEC 17.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 43N61W 998 MB MOVING NE 25 KT AND
RAPIDLY INTENSIFYING. WITHIN 300 NM SE SEMICIRCLE AND BETWEEN 420
NM AND 840 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 3 TO 5 M.
ELSEWHERE S OF 45N NW OF A LINE FROM 31N63W TO 41N44W WINDS 25 TO
35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 50N52W 945 MB. WITHIN 180 NM W SEMICIRCLE
AND BETWEEN 360 NM AND 720 NM SE QUADRANT WINDS 50 TO 65 KT. SEAS
6 TO 9 M. ALSO FROM 34N TO 56N E OF 63W WINDS 35 TO 50 KT. SEAS 4
TO 7.5 M. S OF 59N E OF 67W...INCLUDING WITHIN THE GULF OF SAINT
LAWRENCE...WINDS 25 TO 35 KT. SEAS 3 TO 7 M...EXCEPT SEAS 2.5 TO
4.5 M WITHIN THE GULF OF SAINT LAWRENCE. OTHERWISE S OF 40N
BETWEEN 56W AND 74W AND N OF 57N E OF 45W WINDS TO 25 KT. SEAS
2.5 TO 5.5 M.
.36 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 52N44W 932 MB.
WITHIN 420 NM SE...AND 300 NM SW AND W QUADRANTS WINDS 55 TO 70
KT. SEAS 9 TO 15 M...HIGHEST S AND SE OF CENTER.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER JUST E OF AREA
57N34W 936 MB. BETWEEN 180 NM AND 540 NM S AND SW QUADRANTS WINDS
50 TO 65 KT. SEAS 10 TO 17 M. ALSO WITHIN 660 NM S SEMICIRCLE AND
BETWEEN 240 NM AND 660 NM W AND NW QUADRANTS WINDS 35 TO 50 KT.
SEAS 6 TO 11 M. ELSEWHERE N OF 34N E OF 54W WINDS 25 TO 35 KT.
SEAS 3 TO 7 M. OTHERWISE S OF 40N E OF 58W WINDS TO 25 KT. SEAS
2.5 TO 4.5 M.
...GALE WARNING...
.LOW 58N36W 972 MB MOVING E 15 KT THEN DISSIPATING E OF AREA.
FROM 43N TO 58N E OF 43W AND BETWEEN 180 NM AND 480 NM W QUADRANT
WINDS 35 TO 45 KT. SEAS 4.5 TO 7.5 M..HIGHEST NEAR 48N37W.
ELSEWHERE N AND E OF A LINE FROM 36N35W TO 45N50W TO 58N60W TO
67N60W WINDS 25 TO 35 KT. SEAS 3 TO 6 M IN MIXED SWELL.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH HURRICANE FORCE WIND
WARNING ABOVE.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE FROM 56N60W TO
67N53W AND WITHIN THE GULF OF SAINT LAWRENCE N OF 49N W OF 61W.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY WITHIN THE GULF OF
SAINT LAWRENCE...NW OF A LINE FROM 37N74W TO 45N65W...AND NW OF A
LINE FROM 51N53W TO 61N48W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY WITHIN THE
GULF OF SAINT LAWRENCE NW OF A LINE FROM 47N63W TO 50N60W AND N
OF 55N W OF 57W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY FROM
43N TO 51N BETWEEN 57W AND 70W...INCLUDING WITHIN THE GULF OF
SAINT LAWRENCE AND BAY OF FUNDY...AND N OF 54N W OF 48W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY WITHIN THE
GULF OF SAINT LAWRENCE N OF 50N AND W OF A LINE FROM 52N53W TO
60N58W TO 67N57W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF
45N W OF 48W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 57N E OF
42W...N OF 54N BETWEEN W GREENLAND COAST AND 60W...AND WITHIN 420
NM N AND W OF A LINE FROM 35N68W TO 43N57W TO 45N42W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 58N E OF 60W...INCLUDING
WITHIN THE GULF OF SAINT LAWRENCE E OF 60W.
.48 HOUR FORECAST DENSE FOG N OF 48N W OF 50W AND N OF 60N
BETWEEN W GREENLAND COAST AND 62W.
.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 MON DEC 15.
24 HOUR FORECAST VALID 0000 UTC TUE DEC 16.
48 HOUR FORECAST VALID 0000 UTC WED DEC 17.
.WARNINGS.
...ATLC GALE WARNING...
.WITHIN 31N76W TO 31N78.5W TO 31N77.5W TO 30.5N77.5W TO 31N76W N
WINDS 30 TO 35 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 31N74W TO
31N81W TO 29N81W TO 30N77W TO 31N74W N WINDS 20 TO 30 KT. SEAS
TO 3.0 M IN MERGING SE AND NW SWELL.
.18 HOUR FORECAST WITHIN 31N60W TO 31N67W TO 28N68W TO 26N68W TO
29N63W TO 31N60W NW TO N WINDS 20 TO 25 KT. SEAS 2.5 TO 5.0 M IN
NW SWELL. WITHIN 27N68W TO 28N68W TO 27N74W TO 27N80W TO 25N80W
TO 25N73W TO 27N68W...INCLUDING ATLANTIC EXPOSURES...N TO NE
WINDS 20 TO 25 KT. SEAS 2.5 TO 4.0 M IN NW TO N SWELL. ELSEWHERE
WITHIN 31N66W TO 30N81W TO 27N80W TO 26N77W TO 27N71W TO
31N66W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS
2.5 TO 5.0 M IN N SWELL. WITHIN 31N49W TO 30N56W TO 30N61W TO
30N60W TO 30N56W TO 29N55W TO 31N49W SW WINDS 20 TO 30 KT. SEAS
2.5 TO 3.5 M IN SE SWELL.
.24 HOUR FORECAST WITHIN 26N68W TO 26N76W TO 26N80W TO 24N79W TO
24N73W TO 26N68W...INCLUDING ATLANTIC EXPOSURES...NE WINDS 20 TO
25 KT. SEAS 2.5 TO 4.0 M IN N SWELL. ELSEWHERE WITHIN 31N56W TO
31N80W TO 26N80W TO 24N74W TO 26N65W TO 31N56W...INCLUDING
ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 5.0 M IN NW
TO N SWELL.
.48 HOUR FORECAST WITHIN 26N64W TO 26N67W TO 22N77W TO 24N71W TO
24N69W TO 26N64W...INCLUDING ATLANTIC EXPOSURES...NE WINDS 20 TO
25 KT. SEAS TO 3.5 M IN N SWELL. ELSEWHERE WITHIN 31N44W TO
31N70W TO 27N77W TO 20N68W TO 24N56W TO 31N44W...INCLUDING
ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN NW
TO N SWELL.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 22N35W TO 22N39W TO 18N41W TO 22N48W TO 14N44W TO
11N35W TO 22N35W NE TO E WINDS 20 TO 25 KT. SEAS 3.5 TO 5.0 M IN
MIXED NE AND E SWELL. ELSEWHERE WITHIN 31N35W TO 22N48W TO
31N62W TO 23N69W TO 07N57W TO 07N35W TO 31N35W...INCLUDING IN
ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5
TO 4.5 M IN MIXED NW AND E SWELL.
.24 HOUR FORECAST WITHIN 23N35W TO 21N37W TO 20N37W TO 19N40W TO
18N38W TO 19N36W TO 23N35W NE TO E WINDS 20 TO 25 KT. SEAS 3.5 M
IN MIXED NE AND NW SWELL. ELSEWHERE WITHIN 31N35W TO 31N58W TO
19N62W TO 06N53W TO 07N35W TO 31N35W...INCLUDING IN ATLANTIC
EXPOSURES AND PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M
IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 23N35W TO 22N37W TO 19N40W TO 18N40W TO
16N37W TO 15N35W TO 23N35W E WINDS 20 TO 25 KT. SEAS 3.0 TO 3.5
M IN NE SWELL. ELSEWHERE WITHIN 27N35W TO 20N59W TO 07N56W TO
07N35W TO 27N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES....WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NE TO E
SWELL.
.CARIBBEAN WITHIN 12N70W TO 13N73W TO 12N73W TO 11N71W TO 12N71W
TO 11N70W TO 12N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 14N70W TO
15N78W TO 13N80W TO 11N77W TO 13N75W TO 13N69W TO 14N70W WINDS 20
KT OR LESS. SEAS 2.5 M IN E SWELL.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.GULF OF AMERICA WITHIN 29N83W TO 30N89W TO 28N97W TO 24N98W TO
26N92W TO 28N83W TO 29N83W N TO NE WINDS 20 TO 30 KT. SEAS TO
3.5 M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 20N95.5W TO 20.5N96W TO 20N96.5W TO
19N96W TO 19N95.5W TO 19.5N95.5W TO 20N95.5W...INCLUDING WITHIN
60 NM OF COAST OF VERACRUZ...NW WINDS 20 TO 25 KT. SEAS TO 2.5 M
IN NW TO N SWELL. WITHIN 25N88W TO 24N91W TO 25N93W TO 24N97W TO
21N97W TO 22N85W TO 25N88W...INCLUDING IN YUCATAN CHANNEL...
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 24N83.5W TO 24N85W TO 23.5N85W TO
23N85W TO 23N84.5W TO 23.5N83W TO 24N83.5W...INCLUDING STRAITS OF
FLORIDA...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 STRIPLING. NATIONAL HURRICANE CENTER.
$$