360
FZNT01 KWBC 041648
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC THU DEC 04 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC DEC 04.
24 HOUR FORECAST VALID 1200 UTC DEC 05.
48 HOUR FORECAST VALID 1200 UTC DEC 06.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 50N41W 969 MB MOVING NE 35 KT.
WITHIN 480 NM SW QUADRANT WINDS 50 TO 65 KT. SEAS 7 TO 11 M. ALSO
FROM 39N TO 53N E OF 48W WINDS 35 TO 50 KT. SEAS 4 TO 8 M. AND
FROM 36N TO 54N E OF 51W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
ELSEWHERE WITHIN 1200 NM SW QUADRANT WINDS TO 25 KT. SEAS 3 TO 6
M IN NW SWELL.
.24 HOUR FORECAST LOW E OF AREA 55N20W 969 MB. E OF A LINE FROM
48N45W TO 54N41W AREA OF W TO NW WINDS 25 TO 35 KT. SEAS 4 TO 7
M. ELSEWHERE FROM 35N TO 55N E OF 47W
WINDS LESS THAN 25 KT. SEAS 3 TO 6 M IN W TO NW SWELL.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MOVED WELL E OF
AREA.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 58N38W 984 MB MOVING SW 10 KT.
WITHIN 60 NM W OF A LINE FROM 57N44W TO 62N42W TO 64N34W AREA OF
N TO NE WINDS 35 TO 50 KT. SEAS 5 TO 8 M. ALSO N OF 58N E OF 43W
AND WITHIN 360 NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 4 TO 7 M.
ELSEWHERE...EXCEPT AS DESCRIBED WITH LOW 50N41W ABOVE...N OF 52N
E OF 50W WINDS TO 25 KT. SEAS 3 TO 6 M IN N SWELL.
.24 HOUR FORECAST LOWS DISSIPATED. WITHIN 60 NM NW OF A LINE FROM
58N47W TO 60N42W AREA OF N TO NE WINDS 50 TO 60 KT. SEAS 5 TO 10
M...HIGHEST NEAR 59N46W. ELSEWHERE WITHIN 180 NM NW OF A LINE
FROM 57N51W TO 57N41W TO 60N39W AREA OF N TO NE WINDS 40 TO 50
KT. SEAS 4 TO 7 M. ALSO E OF A LINE FROM 57N39W TO 58N54W TO
59N52W TO 60N44W TO 64N40W TO 66N35W WINDS 25 TO 40 KT. SEAS 3 TO
6 M.
.42 HOUR FORECAST WITHIN 90 NM NW OF A LINE FROM 57N49W TO 58N43W
TO 61N41W AREA OF N TO NE WINDS 50 TO 65 KT. SEAS 6 TO 10.5 M.
.48 HOUR FORECAST WITHIN 60 NM NW OF A LINE FROM 58N46W TO 60N42W
AREA OF N TO NE WINDS 60 TO 70 KT. SEAS 6 TO 11 M. ALSO WITHIN
120 NM NW OF A LINE FROM 56N50W TO 61N40W AREA OF N TO NE WINDS
45 TO 60 KT. SEAS 5 TO 8.5 M. AND WITHIN 180 NM NW OF A LINE FROM
56N50W TO 61N35W WINDS 35 TO 45 KT. SEAS 4 TO 7.5 M. ELSEWHERE N
OF A LINE FROM 56N54W TO 57N35W AREA OF N TO NE WINDS 25 TO 35
KT. SEAS 3 TO 6 M.

...HURRICANE FORCE WIND WARNING...
.12 HOUR FORECAST NEW LOW INLAND NEAR 52N62W 994 MB. FROM 35N TO
50N BETWEEN 58W AND 74W WINDS 25 TO 40 KT. SEAS TO 4 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 51N57W 982 MB AND
RAPIDLY INTENSIFYING. WITHIN 660 NM S AND 420 NM SW QUADRANTS
AREA OF W TO NW WINDS 40 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE FROM
34N TO 56N BETWEEN 43W AND 66W WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
.42 HOUR FORECAST LOW 50N48W 951 MB. WITHIN 360 NM SW SEMICIRCLE
AREA OF W TO NW WINDS 50 TO 65 KT. SEAS 7 TO 12 M.
.48 HOUR FORECAST LOW 50N44W 952 MB. WITHIN 420 NM S AND 480 NM
SW S QUADRANTS AREA OF W TO NW WINDS 50 TO 65 KT. SEAS 7 TO 12 M.
ALSO WITHIN 540 NM S SEMICIRCLE AND 360 NM NW QUADRANT WINDS 35
TO 50 KT. SEAS 6 TO 10 M. ELSEWHERE FROM 38N TO 48N E OF 61W
WINDS 25 TO 40 KT. SEAS 5 TO 9 M.

...GALE WARNING...
.42 HOUR FORECAST LOW 36N70W 1010 MB. FROM 34N TO 38N BETWEEN 63W
AND 73W WINDS 25 TO 35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 36N66W 1010 MB. WITHIN 240 NM NE...300 NM
SE...AND 240 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS TO 4 M.

...GALE WARNING...
.36 HOUR FORECAST NEW LOW 58N59W 986 MB. WITHIN 180 NM NE AND 240
NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW 58N57W 991 MB. WITHIN 90 NM W OF A LINE
FROM 61N62W TO 55N55W AREA OF NW TO N WINDS 30 TO 45 KT. SEAS 4
TO 7 M. ELSEWHERE...EXCEPT AS DESCRIBED ABOVE...FROM 52N TO 65N W
OF 53W WINDS 20 TO 30 KT. SEAS 3 TO 6 M.

...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY IN THE GULF OF SAINT LAWRENCE W
AND NW OF A LINE FROM 50N63W TO 51N57W...AND W AND NW OF A LINE
FROM 49N55W TO 54N52W TO 62N53W TO 63N50W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 46N61W TO 51N59W IN THE GULF OF SAINT LAWRENCE. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 39N73W TO
43N56W TO 46N55W INCLUDING THE GULF OF SAINT LAWRENCE...W OF A
LINE FROM 56N61W TO 61N60W TO 65N64W...N OF A LINE FROM 65N62W TO
66N57W TO 65N53W...AND NE OF A LINE FROM 60N42W TO 65N38W TO
65N35W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE
44N64W TO 47N51W TO 62N62W TO 63N64W...N OF 65N W OF 59W...AND NE
OF A LINE FROM 64N53W TO 67N57W.

.SYNOPSIS AND FORECAST.

.LOW WELL NW OF AREA. N OF 56N W OF 57W WINDS 20 TO 30 KT. SEAS
TO 4 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 54N E OF
43W...FROM 61N TO 66N W OF 59W...AND WITHIN 90 NM OF A LINE
EXTENDING FROM 56N43W TO 59N44W TO 64N40W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 62N BETWEEN 44W AND 64W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM W OF A LINE FROM 48N46W
TO 54N48W TO 63N60W AND WITHIN 90 NM NW OF A LINE FROM 58N43W TO
62N39W.

.FORECASTER HYDE. 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 1200 UTC THU DEC 4.
24 HOUR FORECAST VALID 1200 UTC FRI DEC  5.
48 HOUR FORECAST VALID 1200 UTC SAT DEC  6.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 17N59W TO 18N60W TO 16N61W TO 12N58W TO 13N56W TO
14N55W TO 17N59W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE
WITHIN 28N35W TO 21N51W TO 21N60W TO 12N61W TO 08N56W TO 09N35W
TO 28N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E
SWELL.
.24 HOUR FORECAST WITHIN 21N35W TO 19N43W TO 18N62W TO 09N56W TO
11N41W TO 14N35W TO 21N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E
SWELL.
.48 HOUR FORECAST WITHIN 13N55W TO 14N57W TO 13N58W TO 12N58W TO
13N56W TO 13N54W TO 13N55W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M. ELSEWHERE WITHIN 17N35W TO 16N60W TO 10N61W TO 09N47W TO
11N45W TO 11N35W TO 17N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E
SWELL.

.ATLC 21 HOUR FORECAST COLD FRONT FROM 31N57W TO 28.5N67W.
WITHIN 31N50.5W TO 31N53.5W TO 30.5N53.5W TO 30.5N52W TO 31N50.5W
SW TO W WINDS 20 TO 25 KT. SEAS 2.5 M IN W TO NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N55W TO 28.5N67W. E OF COLD
FRONT WITHIN 31N46.5W TO 31N53W TO 30.5N52.5W TO 31N46.5W WINDS
20 KT OR LESS. SEAS 2.5 M IN NW SWELL. W OF COLD FRONT WITHIN
31N57.5W TO 31N62W TO 30N61W TO 30N60.5W TO 31N57.5W WINDS 20 KT
OR LESS. SEAS 2.5 M IN NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N45W TO 28N54W. WITHIN
31N35W TO 31N54W TO 30N48W TO 29N47W TO 29N41W TO 31N35W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NW SWELL.

.ATLC 30 HOUR FORECAST COLD FRONT N OF AREA. WITHIN 31N78W TO
31N80W TO 30N80W TO 31N78W SW WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.48 HOUR FORECAST COLD FRONT FROM 31N75W TO 29.5N81W. WITHIN
31N73.5W TO 31N76W TO 30.5N75.5W TO 30.5N74.5W TO 31N73.5W WINDS
20 KT OR LESS. SEAS 2.5 M IN E TO SE SWELL.

.GULF OF AMERICA 09 HOUR FORECAST COLD FRONT FROM 29.5N92W TO
26N97W. WITHIN 27N96W TO 29N96W TO 28N97W TO 26N97W TO 27N96W N
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST COLD FRONT FROM 30.5N87W TO 28N90W TO
20.5N97W. WITHIN 25N96W TO 25N97W TO 25N98W TO 22N98W TO 22N97W
TO 25N96W N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.


.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.

$$