FZNT01 KWBC 202136
HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT DEC 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20.
24 HOUR FORECAST VALID 1800 UTC DEC 21.
48 HOUR FORECAST VALID 1800 UTC DEC 22.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.LOW 57N60W 946 MB MOVING NE 20 KT. WITHIN 90 NM SW AND 180 NM NW
QUADRANTS...AND FROM 59N TO 62N BETWEEN 45W AND 54W WINDS 50 TO
65 KT. SEAS 4.5 TO 9 M. ELSEWHERE FROM 46N TO 63N BETWEEN 42W AND
66W WINDS 40 TO 50 KT. SEAS 4 TO 8 M...HIGHEST NEAR 56N53W.
OTHERWISE N OF 42N BETWEEN 38W AND 67W WINDS 25 TO 40 KT. SEAS 3
TO 6 M.
.24 HOUR FORECAST LOW 65N54W 961 MB. FROM 62N TO 66N BETWEEN 51W
AND 61W WINDS 40 TO 50 KT. SEAS 4 TO 7.5 M. ELSEWHERE N OF A LINE
FROM 50N45W TO 55N60W TO 62N66W WINDS 25 TO 40 KT. SEAS 4.5 TO 9
M...HIGHEST NEAR 59N47W.
.48 HOUR FORECAST LOW AND CONDITIONS MOVED WELL N OF AREA.
...STORM WARNING...
.24 HOUR FORECAST NEW LOW 62N41W 982 MB. N OF A LINE FROM 48N35W
TO 53N45W WINDS 30 TO 45 KT. SEAS 4 TO 8 M...HIGHEST NEAR
58N45W.
.36 HOUR FORECAST LOW 64N40W 979 MB. FROM 58N TO 61N BETWEEN 35W
AND 44W WINDS 35 TO 50 KT. SEAS 5 TO 9.9 M.
.48 HOUR FORECAST LOW 63N40W 980 MB. WITHIN 240 NM SE AND S
QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO 7.5 M. ELSEWHERE N OF A
LINE FROM 56N35W TO 60N47W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.LOW E OF AREA 62N29W 988 MB MOVING W 10 KT. N OF 64N E OF
GREENLAND WINDS 30 TO 45 KT. SEAS 3.5 TO 5.5 M. ELSEWHERE N OF
59N BETWEEN 35W AND 40W WINDS 20 TO 30 KT. SEAS 3 TO 5 M.
.12 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.
...GALE WARNING...
.LOW 42N54W 1008 MB MOVING NE 35 KT. FROM 36N TO 42N BETWEEN 40W
AND 65W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 45N35W 1011 MB. FROM 39N TO 46N BETWEEN 35W
AND 37W WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 36N TO
48N BETWEEN 35W AND 40W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
...GALE WARNING...
.12 HOUR FORECAST LOW INLAND 50N78W 995 MB. W OF A LINE FROM
45N65W TO 42N66W TO 37N73W WINDS 25 TO 35 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW INLAND 49N68W 998 MB. W AND NW OF A LINE
FROM 51N54W TO 45N54W TO 40N60W TO 37N70W WINDS 25 TO 35 KT. SEAS
TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 54N50W 990 MB.
WITHIN 240 NM SW QUADRANT WINDS 35 TO 45 KT. SEAS 3 TO 5.5 M.
ELSEWHERE FROM 44N TO 56N BETWEEN 37W AND 57W WINDS 25 TO 35 KT.
SEAS 3 TO 5.5 M.
...GALE WARNING...
.48 HOUR FORECAST NEW LOW 42N51W 1002 MB. FROM 33N TO 41N BETWEEN
60W AND 67W WINDS 35 TO 45 KT. SEAS 3 TO 5 M. ELSEWHERE WITHIN
360 NM E AND SE...AND 420 NM SW QUADRANTS...AND FROM 31N TO 44N
BETWEEN 57W AND 70W WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A LINE FROM 48N64W
TO 50N60W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N AND NW OF
A LINE FROM 45N61W TO 49N58W...AND NW AND N OF A LINE FROM 63N50W
TO 62N62W TO 60N64W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 52N54W TO 55N53W TO 60N60W TO 65N58W. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 49N49W TO 55N47W
TO 67N57W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A
LINE FROM 48N64W TO 52N54W TO 60N60W TO 67N56W. ELSEWHERE LIGHT
TO MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 41N69W TO
43N62W TO 50N52W TO 59N50W TO 59N43W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 55N TO 65N
BETWEEN 57W AND 65W...FROM 59N TO 64N BETWEEN 40W AND 57W...AND N
OF 64N E OF GREENLAND.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 52N BETWEEN 53W AND
68W...AND N OF 60N BETWEEN 49W AND 60W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 49N BETWEEN 47W AND
50W...AND FROM 52N TO 57N BETWEEN 39W AND 55W.
.FORECASTER HUFFMAN. 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 20.
24 HOUR FORECAST VALID 1800 UTC SUN DEC 21.
48 HOUR FORECAST VALID 1800 UTC MON DEC 22.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 29N35W TO 29N37W TO 27N37W TO 26N37W TO 25N35W TO
29N35W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M IN N SWELL.
ELSEWHERE WITHIN 31N35W TO 31N50W TO 22N54W TO 26N66W TO 09N56W
TO 07N35W TO 31N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N AND
E SWELL.
.24 HOUR FORECAST WITHIN 31N35W TO 31N44W TO 19N54W TO 19N62W TO
06N53W TO 07N35W TO 31N35W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N AND
E SWELL.
.48 HOUR FORECAST WITHIN 28N35W TO 23N41W TO 18N44W TO 16N39W TO
09N40W TO 07N35W TO 28N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN MIXED N AND E SWELL. ELSEWHERE WITHIN 17N52W TO 18N57W TO
10N59W TO 09N54W TO 07N50W TO 08N48W TO 17N52W WINDS 20 KT OR
LESS. SEAS 2.5 M IN E SWELL.
.ATLC COLD FRONT FROM 31N64W TO 27N71W. WITHIN 31N66.5W TO
31N71.5W TO 30.5N71W TO 30.5N68.5W TO 30.5N67.5W TO 31N66.5W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC LOW PRES NEAR 29N55W 1017 MB. SURFACE TROUGH FROM 31N53W TO
29N55W TO 25N60W. NEAR AND E OF LOW AND TROUGH WITHIN 31N50W TO
31N56W TO 29N57W TO 26N53W TO 27N50W TO 31N50W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN E TO SE SWELL. W OF LOW AND SURFACE
TROUGH WITHIN 31N55W TO 31N64W TO 26N61W TO 29N56W TO 31N55W
WINDS 20 KT OR LESS. SEAS 2.5 M IN NE SWELL.
.24 HOUR FORECAST SURFACE TROUGH FROM 31N52W TO 25N58W. WITHIN
31N45.5W TO 31N48.5W TO 30N49W TO 30N48.5W TO 30.5N46.5W TO
31N45.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN SE SWELL.
.27 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC 39 HOUR FORECAST COLD FRONT FROM 31N71W TO 29N81W. WITHIN
31N72W TO 31N81W TO 30N79W TO 30N75W TO 31N72W NE WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST COLD FRONT FROM 31N63W TO 27.5N80W. WITHIN
31N63W TO 31N81W TO 26N79W TO 24N76W TO 27N67W TO
31N63W...INCLUDING ATLANTIC EXPOSURES...NE WINDS 20 TO 30 KT.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.ATLC AND CARIBBEAN 39 HOUR FORECAST WITHIN 20N73W TO 21N74W TO
20N74W TO 19N76W TO 19N75W TO 20N73W NE TO E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 19N74W TO 20N74W TO 20N75W TO 19N76W TO
19N75W TO 19N74W...INCLUDING BETWEEN CUBA AND JAMAICA...NE WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.CARIBBEAN WITHIN 12N74W TO 13N76W TO 12N77W TO 11N78W TO 11N76W
TO 11N74W TO 12N74W NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0
M. ELSEWHERE WITHIN 13N74W TO 15N78W TO 15N80W TO 10N79W TO
11N75W TO 12N76W TO 13N74W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN E TO NE SWELL.
.24 HOUR FORECAST WITHIN 12N74W TO 12N76W TO 12N77W TO 11N77W TO
11N76W TO 11N74W TO 12N74W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.5 M. ELSEWHERE WITHIN 14N75W TO 14N78W TO 14N81W TO 10N81W
TO 09N77W TO 12N75W TO 14N75W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.5 M IN E TO NE SWELL.
.48 HOUR FORECAST WITHIN 11.5N74.5W TO 11.5N76W TO 11.5N77.5W TO
11N77.5W TO 11N76.5W TO 11N74.5W TO 11.5N74.5W NE WINDS 20 TO 25
KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 13N74W TO 14N77W TO
14N79W TO 11N80W TO 10N77W TO 12N75W TO 13N74W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN NE TO E SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.
$$
