High seas forecast: storm warnings, significant wave heights, low pressure systems.

FZNT01 KWBC 192131
HSFAT1 2230

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 19.
24 HOUR FORECAST VALID 1800 UTC DEC 20.
48 HOUR FORECAST VALID 1800 UTC DEC 21.

.WARNINGS.

…STORM WARNING…
.RAPIDLY INTENSIFYING COMPLEX LOW WITH FIRST CENTER 46N59W 1001
MB MOVING NE 55 KT AND SECOND CENTER 55N52W 1004 MB MOVING NE 30
KT. FROM 34N TO 47N BETWEEN 50W AND 69W…AND WITHIN 360 NM W
QUADRANT OF FIRST CENTER WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.
ALSO WITHIN 420 NM S QUADRANT OF SECOND CENTER WINDS TO 25 KT.
SEAS TO 10 FT.
.12 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 53N44W 991 MB
AND SECOND CENTER 58N48W 990 MB. FROM 48N TO 53N BETWEEN 38W AND
47W WINDS 40 TO 50 KT. SEAS 12 TO 20 FT.
.24 HOUR FORECAST COMPLEX LOW E OF AREA. FROM 55N TO 60N E OF
45W WINDS 40 TO 55 KT. SEAS 14 TO 24 FT. ELSEWHERE FROM 44N TO
60N BETWEEN 35W AND 44W…AND FROM 50N TO 60N BETWEEN 44W AND
50W WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. ALSO N OF 60N E OF
GREENLAND WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

…STORM WARNING…
.LOW 59N58W 1000 MB MOVING NE 10 KT. WITHIN 120 NM S QUADRANT
WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.06 HOUR FORECAST LOW 60N57W 992 MB. WITHIN 120 NM S AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW 61N56W 986 MB. WITHIN 120 NM S QUADRANT
WINDS 40 TO 50 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 61N52W 979 MB. WITHIN 120 NM S AND 180 NM
SW QUADRANTS WINDS 40 TO 50 KT. SEAS 16 TO 24 FT. ELSEWHERE NW
OF A LINE FROM 51N50W TO 63N50W WINDS 25 TO 40 KT. SEAS 9 TO 18
FT.
.48 HOUR FORECAST LOW ABSORBED E OF AREA. N OF 63N E OF 39W
WINDS 40 TO 50 KT. SEAS 12 TO 19 FT. ELSEWHERE N OF A LINE FROM
54N35W TO 59N44W WINDS 25 TO 40 KT. SEAS 12 TO 30 FT…HIGHEST
NEAR 58N35W.

…STORM WARNING…
.LOW 32N78W 1016 MB MOVING NE 15 KT. WITHIN 240 NM NW AND N
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 37N73W 1005 MB. W OF A LINE FROM 31N63W TO
46N44W WINDS 25 TO 35 KT. SEAS TO 10 FT.
.42 HOUR FORECAST LOW 43N63W 988 MB. FROM 35N TO 41N BETWEEN 57W
AND 64W WINDS 40 TO 50 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW 46N60W 979 MB. FROM 40N TO 46N BETWEEN 53W
AND 58W WINDS 40 TO 50 KT. SEAS 16 TO 23 FT. ELSEWHERE BETWEEN
76W AND A LINE FROM 31N57W TO 50N38W TO 54N46W WINDS 25 TO 40
KT. SEAS 9 TO 18 FT.

…GALE WARNING…
.LOW JUST E OF AREA 64N34W 986 MB MOVING NE 10 KT. N OF A LINE
FROM 52N35W TO 61N48W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

…GALE WARNING…
.LOW 32N39W 1016 MB MOVING W 10 KT. FROM 31N TO 38N E OF 46W
WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 32N43W 1012 MB. FROM 31N TO 40N E OF 49W
WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 33N44W 1015 MB. FROM 31N TO 42N E OF 43W
WINDS TO 25 KT. SEAS TO 10 FT.

…GALE WARNING…
.48 HOUR FORECAST WITHIN 180 NM SE OF A FRONT FROM 65N53W TO
61N68W AREA OF W TO SW WINDS 25 TO 35 KT. SEAS TO 10 FT.

…HEAVY FREEZING SPRAY WARNING…
.MODERATE TO HEAVY FREEZING SPRAY NW AND N OF A LINE FROM 59N64W
TO 65N54W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY IN THE
GULF OF SAINT LAWRENCE W OF 65W…NW AND N OF A LINE FROM 53N56W
TO 60N45W…AND N OF 64N WITHIN 60 NM SE OF GREENLAND.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 53N W OF
52W…AND N OF 64N W OF GREENLAND. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY NW AND N OF A LINE FROM 46N63W TO 50N49W TO
60N45W…AND N OF 64N WITHIN 60 NM SE OF GREENLAND.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW AND N OF
LINE FROM 56N61W TO 64N52W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY NW AND N OF A LINE FROM 47N64W TO 62N35W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 63N E OF
GREENLAND…AND FROM 44N TO 63N BETWEEN 47W AND 65W.
.24 HOUR FORECAST DENSE FOG N OF 55N BETWEEN 35W AND 60W.
.48 HOUR FORECAST DENSE FOG N OF 59N W OF 49W…AND FROM 43N TO
55N BETWEEN 43W AND 67W.

.FORECASTER KELLS. 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 1800 UTC THU DEC 19.
24 HOUR FORECAST VALID 1800 UTC FRI DEC 20.
48 HOUR FORECAST VALID 1800 UTC SAT DEC 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 23N52W TO 24N56W TO 23N55W TO 22N53W TO 22N51W TO
22N49W TO 23N52W NE TO E WINDS 20 TO 25 KT. SEAS 10 TO 11 FT IN
NE SWELL. ELSEWHERE WITHIN 31N47W TO 28N53W TO 29N68W TO 24N74W
TO 07N46W TO 19N50W TO 31N47W…INCLUDING IN ATLANTIC EXPOSURES
AND PASSAGES…WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NE TO E
SWELL.
.24 HOUR FORECAST WITHIN 21N46W TO 28N70W TO 21N71W TO 17N62W TO
09N53W TO 13N53W TO 21N46W…INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES…WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E
SWELL.
.48 HOUR FORECAST WITHIN 23N60W TO 21N57W TO 19N55W TO 19N52W TO
23N60W WINDS 20 KT OR LESS. SEAS 8 FT IN NE TO E SWELL.

.ATLC LOW PRES NEAR 32N39.5W 1016 MB. WITHIN 31N38W TO 31N41W TO
31N44.5W TO 30.5N44.5W TO 30.5N43W TO 30N38.5W TO 31N38W WINDS
20 TO 25 KT. SEAS 10 TO 12 FT IN N TO NE SWELL. ELSEWHERE WITHIN
31N35W TO 31N47W TO 20N47W TO 19N35W TO 31N35W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN MIXED N AND NE SWELL.
.24 HOUR FORECAST LOW PRES NEAR 31.5N43W 1012 MB. WITHIN
31N41.5W TO 31N42W TO 30.5N42.5W TO 30.5N42W TO 31N41.5W SW WINDS
20 TO 25 KT. SEAS 10 FT IN NE SWELL. ELSEWHERE WITHIN 31N39W TO
31N50W TO 29N49W TO 26N46W TO 26N43W TO 31N39W WINDS 20 KT OR
LESS. SEAS 8 TO 13 FT IN N TO NE SWELL. WITHIN 31N35W TO 31N38W
TO 28N38W TO 28N37W TO 27N37W TO 25N35W TO 31N35W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN E SWELL.
.48 HOUR FORECAST LOW PRES N OF AREA NEAR 33N43.5W 1015 MB.
WITHIN 31N35W TO 31N40W TO 30N38W TO 29N38W TO 27N36W TO 27N35W
TO 31N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E SWELL.

.ATLC 30 HOUR FORECAST WITHIN 31N67W TO 31N69W TO 30.5N68.5W TO
30.5N67.5W TO 31N67W S TO SW WINDS 20 TO 25 KT. SEAS 8 FT IN SE
SWELL. WITHIN 31N75W TO 31N80W TO 30N80W TO 30N78W TO 30N77W TO
31N75W W TO NW WINDS 20 TO 25 KT. SEAS TO 8 FT IN W TO NW SWELL.
.48 HOUR FORECAST WITHIN 31N60W TO 31N63W TO 30N64W TO 29N65W TO
29N63W TO 27N62W TO 31N60W WINDS 20 KT OR LESS. SEAS 8 FT IN SE
TO S SWELL. WITHIN 31N64W TO 31N76W TO 29N75W TO 28N72W TO 30N69W
TO 31N64W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W TO NW SWELL.

.CARIBBEAN WITHIN 12N76W TO 12N77W TO 11N77W TO 11N76W TO 12N76W
WINDS 20 KT OR LESS. SEAS 8 FT IN NE TO E SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

¤¤
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

UUID A2948D7C-BE50-11EF-935C-0AFB0A270000 TX 1