High seas forecast for Metarea IV includes storm and gale warnings.

FZNT01 KWBC 190421
HSFAT1 0430

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC THU DEC 19 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
[email protected](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 19.
24 HOUR FORECAST VALID 0000 UTC DEC 20.
48 HOUR FORECAST VALID 0000 UTC DEC 21.

.WARNINGS.

…STORM WARNING…
.LOW 61N40W 992 MB MOVING NE 15 KT. FRONT FROM 61N38W TO 55N40W
TO 50N42W TO 42N50W. WITHIN 240 NM E OF FRONT WINDS 25 TO 40 KT.
SEAS 8 TO 17 FT.
.12 HOUR FORECAST LOW 64N35W 987 MB. WITHIN 90 NM N AND NW
QUADRANTS WINDS 40 TO 50 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW E OF AREA 65N29W 984 MB. FROM 57N TO 61N E
OF 43W WINDS 25 TO 40 KT. SEAS 9 TO 19 FT.
.36 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.

…STORM WARNING…
.LOW 40N75W 1013 MB MOVING NE 35 KT. WITHIN 360 NM SE QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST LOW 42N69W 1011 MB. WITHIN 420 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 50N51W 999 MB. FRONT FROM LOW TO 45N55W TO
41N60W TO 37N65W. WITHIN 300 NM SE QUADRANT WINDS 30 TO 45 KT.
SEAS 9 TO 16 FT. ELSEWHERE WITHIN 300 NM E OF FRONT WINDS 25 TO
35 KT. SEAS 8 TO 14 FT.
.30 HOUR FORECAST LOW 54N45W 988 MB. FROM 46N TO 54N BETWEEN 35W
AND 47W WINDS 40 TO 55 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW E OF AREA 61N22W 965 MB. FROM 54N TO 60N E
OF 41W WINDS 35 TO 50 KT. SEAS 17 TO 26 FT. ELSEWHERE FROM 52N
TO 62N E OF 43W WINDS 25 TO 40 KT. SEAS 16 TO 24 FT.

…STORM WARNING…
.24 HOUR FORECAST NEW LOW 61N57W 990 MB. WITHIN 120 NM SW
SEMICIRCLE WINDS WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST LOW 61N53W 979 MB. FROM 58N TO 62N BETWEEN 52W
AND 59W WINDS 40 TO 50 KT. SEAS 12 TO 19 FT.
.48 HOUR FORECAST LOW 59N45W 988 MB. WITHIN 180 NM S AND SW
SEMICIRCLES WINDS 40 TO 55 KT. SEAS 16 TO 28 FT. ELSEWHERE FROM
53N TO 62N BETWEEN 43W AND 55W WINDS 25 TO 40 KT. SEAS 9 TO 19
FT.

…GALE WARNING…
.LOW 58N48W 995 MB MOVING NE 20 KT. WITHIN 240 NM SW AND 360 NM
NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED INTO LOW 65N29W
DESCRIBED ABOVE.

…GALE WARNING…
.LOW S OF AREA 30N38W 1021 MB MOVING NW 10 KT. FROM 31N TO 33N E
OF 41W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW 32N39W 1019 MB. WITHIN 240 NM N SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 8 TO 18 FT.
.24 HOUR FORECAST LOW 32N42W 1017 MB. WITHIN 300 NM NW AND 360
NM NE QUADRANTS AND ELSEWHERE WITHIN 90 NM OF LOW WINDS 30 TO 45
KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST LOW 31N44W 1010 MB. WITHIN 120 NM N SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.

…GALE WARNING…
.24 HOUR FORECAST NEW LOW 32N75W 1017 MB. WITHIN 300 NM N AND NW
QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 39N68W 999 MB. WITHIN 420 NM SE…120 NM W
AND NW…AND 360 NM E QUADRANTS WINDS 25 TO 35 KT. SEAS TO 12 FT.

…HEAVY FREEZING SPRAY WARNING…
.MODERATE TO HEAVY FREEZING SPRAY NW AND N OF A LINE FROM 59N63W
TO 65N55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW AND N
OF A LINE FROM 55N59W TO 65N53W…AND N OF 60N WITHIN 60 NM E OF
GREENLAND.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW AND N OF A
LINE FROM 63N59W TO 66N53W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY NW AND N OF A LINE FROM 53N56W TO 60N46W…N OF 64N E OF
GREENLAND…AND IN THE GULF OF SAINT LAWRENCE W OF 64W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 53N W OF
53W…AND N OF 63N W OF GREENLAND. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY NW AND N OF A LINE FROM 46N63W TO 53N44W…AND N
OF 64N E OF GREENLAND.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 58N BETWEEN
45W AND 50W AND N OF 61N BETWEEN 35W AND 40W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 59N BETWEEN 40W AND
59W…AND N OF 63N E OF 38W.
.48 HOUR FORECAST DENSE FOG N OF 62N E OF 39W.

.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 0000 UTC THU DEC 19.
24 HOUR FORECAST VALID 0000 UTC FRI DEC 20.
48 HOUR FORECAST VALID 0000 UTC SAT DEC 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC LOW PRESSURE NEAR 30N38W. WITHIN 31N35W TO 31N37W TO
31N39W TO 29N39W TO 30N37W TO 30N35W TO 31N35W E TO NE WINDS 20
TO 30 KT. SEAS 11 TO 13 FT. ELSEWHERE WITHIN 30N35W TO 31N46W TO
24N44W TO 24N40W TO 17N36W TO 19N35W TO 30N35W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN N SWELL.
.24 HOUR FORECAST LOW PRES N OF AREA NEAR 32N42W. WITHIN 31N35W
TO 31N49W TO 28N50W TO 19N45W TO 17N35W TO 31N35W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN N TO NE SWELL.
.48 HOUR FORECAST LOW PRES N OF AREA NEAR 31.5N44W. WITHIN
31N42.5W TO 31N46W TO 30.5N45W TO 31N43W TO 31N42.5W W WINDS 20
TO 25 KT. SEAS 10 TO 12 FT. ELSEWHERE WITHIN 31N35W TO 31N51W TO
28N50W TO 26N45W TO 28N43W TO 26N36W TO 31N35W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN NE SWELL.

.ATLC WITHIN 24N46W TO 29N50W TO 24N59W TO 25N65W TO 19N63W TO
23N53W TO 24N46W…INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES…NE TO E WINDS 20 TO 25 KT. SEAS 10 TO 13 FT.
ELSEWHERE
WITHIN 25N41W TO 30N80W TO 20N72W TO 07N49W TO 07N41W TO 19N51W
TO 25N41W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NE SWELL.
.24 HOUR FORECAST WITHIN 28N49W TO 27N70W TO 23N73W TO 11N59W TO
07N48W TO 20N45W TO 28N49W…INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES…WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NE SWELL.
.48 HOUR FORECAST WITHIN 21N48W TO 25N62W TO 22N67W TO 17N62W TO
11N59W TO 10N56W TO 21N48W…INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES…WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE SWELL.

.ATLC 48 HOUR FORECAST COLD FRONT FROM 31N72W TO 27N79W. WITHIN
31N76.5W TO 31N78W TO 31N80.5W TO 30.5N77.5W TO 30N77W TO
31N76.5W W TO NW WINDS 20 TO 25 KT. SEAS 8 FT.

.CARIBBEAN WITHIN 12.5N73W TO 13N73.5W TO 13N74.5W TO 12.5N75W
TO 12.5N74W TO 12N73W TO 12.5N73W NE TO E WINDS 20 TO 25