High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 212142
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU MAR 21 2024

CCODE/1:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

FROM APRIL 1 TO OCTOBER 15, DUE TO THE CLIMATOLOGY OF THE NORTH
ATLANTIC, HIGH SEAS FORECASTS WILL ONCE AGAIN INCLUDE ALL
FORECASTS OF WINDS 20 TO 30 KNOTS AND SEAS 8 FEET OR GREATER.
ALSO, PLEASE SEE HTTPS://OCEAN.WEATHER.GOV/PROPOSED_HIGH_SEAS
_TROPICAL.PHP FOR A PROPOSAL, AND A REQUEST FOR COMMENTS, TO
INCREASE READABILITY OF THE HIGH SEAS FORECAST (WEB ADDRESS
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 MAR 21.
24 HOUR FORECAST VALID 1800 UTC MAR 22.
48 HOUR FORECAST VALID 1800 UTC MAR 23.

.WARNINGS.

...STORM WARNING...
.LOW 65N40W MOVING SE 10 KT. FROM 57N TO 60N WINDS 35 TO 50 KT.
SEAS 12 TO 22 FT...HIGHEST NEAR 60N35W. ELSEWHERE FROM 54N TO 60N
E OF 48W AND FROM 60N TO 62N E OF GREENLAND WINDS 25 TO 35 KT.
SEAS 8 TO 17 FT.
.24 HOUR FORECAST LOW E OF THE AREA 63N33W 1012 MB. FROM 58N TO
63N E OF 39W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT...HIGHEST NEAR
60N35W.
.48 HOUR FORECAST LOW AND CONDITIONS E OF THE AREA.

...STORM WARNING...
.INLAND LOW 47N68W 990 MB MOVING NE 15 KT. BETWEEN 120 NM AND 360
NM NE...240 NM AND 600 NM E...120 NM AND 540 NM SE AND 120 NM AND
480 NM S AND SW QUADRANTS WINDS 30 TO 40 KT. SEAS 9 TO 15
FT...HIGHEST NEAR 42N66W. SEAS TO 10 FT IN THE GULF OF SAINT
LAWRENCE. ELSEWHERE FROM 35N TO 51N W OF 53W WINDS 25 TO 35 KT.
SEAS 8 TO 13 FT.
.18 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 50N62W 993 MB AND
SECOND NEW LOW 54N57W 994 MB. WITHIN 240 NM NW AND N OF A FRONT
FROM THE SECOND LOW TO 55N51W AND WITHIN 180 NM NE AND E OF FRONT
FROM 55N51W TO 51N50W WINDS 35 TO 50 KT. SEAS 10 TO 20 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 50N59W 994 MB AND
SECOND LOW 55N59W 990 MB. WITHIN 240 NM NW AND N OF A FRONT FROM
THE SECOND LOW TO 57N52W AND WITHIN 180 NM N AND NE OF FRONT FROM
57N52W TO 55N47W WINDS 35 TO 50 KT. SEAS 12 TO 22 FT. ELSEWHERE
WITHIN 600 NM NE...480 NM E AND 360 NM SE QUADRANTS OF SECOND LOW
AND WITHIN 360 NM SE...660 NM S...SW AND 180 NM W QUADRANTS OF
FIRST LOW WINDS 25 TO 40 KT. SEAS 8 TO 17 FT...EXCEPT TO 12 FT IN
THE GULF OF SAINT LAWRENCE.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N46W AND SECOND
LOW DISSIPATED. WITHIN 90 NM N SEMICIRCLE OF MAIN LOW WINDS 40 TO
55 KT. SEAS 15 TO 26 FT. ELSEWHERE FROM 58N TO 62N E OF 44W AND
FROM 47N TO 53N BETWEEN 37W AND 53W WINDS 35 TO 45 KT. SEAS 10 TO
20 FT...HIGHEST NEAR 51N44W. ALSO FROM 43N TO 60N BETWEEN 35W AND
50W...WITHIN 360 NM NW QUADRANT...N OF 60N E OF GREENLAND AND N
OF 63N W OF GREENLAND WINDS 25 TO 35 KT. SEAS 8 TO 15 FT IN MIXED
SWELL.

...GALE WARNING...
.LOW 38N51W 1012 MB MOVING NE 35 KT. FROM 31N TO 48N BETWEEN 40W
AND 50W AND FROM 40N TO 44N BETWEEN 35W AND 40W WINDS 20 TO 30
KT. SEAS 8 TO 15 FT IN MIXED SWELL.
.12 HOUR FORECAST LOW 42N49W 1010 MB. WITHIN 780 NM N AND 720 NM
NE QUADRANTS WINDS 25 TO 40 KT. SEAS 25 TO 40 KT. SEAS 8 TO 15
FT.
.24 HOUR FORECAST LOW 51N41W 1005 MB. WITHIN 240 NM E AND 360 NM
S QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED ABOVE
WITH LOW 58N46W.

...GALE WARNING...
.30 HOUR FORECAST FROM 31N TO 33N W OF 76W AREA OF SE WINDS 30 TO
40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST NEW LOW 34N77W 1004 MB. FROM 31N TO 38N BETWEEN
69W AND 78W WINDS 30 TO 45 KT. SEAS 11 TO 21 FT. ELSEWHERE FROM
31N TO 40N W OF 64W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF GREENLAND.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY FROM 55N TO 58N W OF
53W...N OF 58N W OF 49W AND N OF 62N W OF 38W TO GREENLAND.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF
48W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY IN THE GULF OF
SAINT LAWRENCE AND N OF 58N W OF 49W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY FROM 56N TO
58N W OF 57W AND N OF 65N W OF GREENLAND. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY IN THE GULF OF SAINT LAWRENCE...W OF A
LINE FROM 54N51W TO 59N56W AND N OF 62N W OF GREENLAND.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM IN THE GULF OF SAINT
LAWRENCE...FROM 43N TO 47N BETWEEN 56W AND 59W AND FROM 48N TO
50N BETWEEN 50W AND NEWFOUNDLAND.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 51N BETWEEN 40W AND
45W...FROM 55N TO 59N W OF 43W AND IN THE GULF OF SAINT
LAWRENCE.
.48 HOUR FORECAST DENSE FOG FROM 58N TO 63N E OF GREENLAND AND
FROM 60N TO 63N W OF GREENLAND.

.FORECASTER FUTTERMAN. OCEAN PREDICTION CENTER.

NWS 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 MAR 21.
24 HOUR FORECAST VALID 1800 UTC FRI MAR 22.
48 HOUR FORECAST VALID 1800 UTC SAT MAR 23.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 18 HOUR FORECAST N OF 27N W OF 77W SE WINDS 25 TO 30 KT.
SEAS TO 8 FT. ELSEWHERE N OF 20N AND W OF A LINE FROM 31N74W TO
27N65W TO 23N61W TO 20N70W E TO SE WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST N OF 27N BETWEEN 75W AND 80W S TO SW WINDS 30
TO 35 KT. SEAS 9 TO 14 FT. ELSEWHERE N OF 20N W OF 70W E TO SE
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT N AND E OF THE BAHAMAS. N OF
A LINE FROM 25N55W TO 20N70W NE TO E WINDS 20 TO 25 KT. SEAS TO
8 FT.
.42 HOUR FORECAST FRONTAL SYSTEM W OF AREA OVER E GULF OF
MEXICO. N OF 27N BETWEEN 70W AND 78W SE TO S WINDS 25 TO 35 KT.
SEAS 10 TO 14 FT. ELSEWHERE N OF 20N W OF 55W AND E OF THE
BAHAMAS E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT NE OF THE
BAHAMAS.
.48 HOUR FORECAST COLD FRONT FROM 31N78W TO 25N81W. N OF 27N E
OF FRONT TO 68W SE TO S WINDS 25 TO 30 KT. SEAS 9 TO 12 FT...
EXCEPT 12 TO 14 FT N OF 29N E OF FRONT TO 72W. ELSEWHERE N OF
22N W OF 55W AND E OF THE BAHAMAS E TO SE WINDS 20 TO 25 KT.
SEAS 8 TO 10 FT.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT TO 31N53W TO 22N61W THEN STATIONARY FRONT TO
20N70W. N OF 30N E OF FRONT TO 50W SE TO S WINDS 20 TO 25 KT.
SEAS 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC FROM 16N TO 25N E OF 45W NE TO E WINDS 20 TO 25 KT. SEAS 8
TO 10 FT. ELSEWHERE FROM 15N TO 28N E OF 45W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.
.24 HOUR FORECAST FROM 18N TO 28N E OF 42W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 20N TO 25N E OF 40W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN NE TO E SWELL.

.ATLC AND CARIBBEAN 06 HOUR FORECAST FROM 18.5N TO 20.5N BETWEEN
73W AND 76W...INCLUDING THE WINDWARD PASSAGE...NE WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 11N TO 13N BETWEEN 70W AND 76W...INCLUDING THE
GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT NEAR
THE COAST OF COLOMBIA.
.12 HOUR FORECAST FROM 10N TO 13N BETWEEN 70W AND 76W...
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT...
EXCEPT 25 TO 30 KT NEAR THE COAST OF COLOMBIA. SEAS 8 TO 9 FT.
.24 HOUR FORECAST FROM 10N TO 13N BETWEEN 70W AND 78W...
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT NEAR THE COAST OF COLOMBIA.
.36 HOUR FORECAST FROM 11N TO 14N BETWEEN 68W AND 76W...
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT NEAR THE COAST OF COLOMBIA.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN 12 HOUR FORECAST S OF 17N BETWEEN 85W AND 87W E WINDS
20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST W OF 85W...INCLUDING THE YUCATAN CHANNEL...SE
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST FROM 16N TO 19N BETWEEN 83W AND 86W E TO SE
WINDS 20 TO 30 KT. SEAS BUILDING TO 8 FT.
.36 HOUR FORECAST FROM 16N TO 20N BETWEEN 81W AND 86W E TO SE
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST COLD FRONT IN THE YUCATAN CHANNEL. N OF 20N
BETWEEN 80W AND 85W S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.

.GULF OF MEXICO LOW PRES INLAND NEAR THE CENTRAL TEXAS COAST. N
OF 27N BETWEEN 90W AND 96W E TO SE WINDS 20 TO 30 KT. SEAS LESS
THAN 8 FT. WINDS AND SEAS HIGHER NEAR TSTMS.
.24 HOUR FORECAST LOW PRES NEAR 30N90W WITH COLD FRONT TO NEAR
21N97W. FROM 22N TO 28N E OF 87W SE TO S WINDS 20 TO 30 KT. SEAS
BUILDING 8 TO 10 FT. IN THE STRAITS OF FLORIDA...SE WINDS 20 TO
25 KT. SEAS TO 8 FT. WINDS AND SEAS HIGHER IN AND NEAR NUMEROUS
SHOWERS AND TSTMS E OF FRONT AND NEAR THE LOW.
.48 HOUR FORECAST COLD FRONT OVER THE SE GULF AND YUCATAN
CHANNEL. N OF 22N W OF FRONT TO 91W NW TO N WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT. FROM 22N TO 25N E OF FRONT...INCLUDING THE
STRAITS OF FLORIDA...S TO SW WINDS 20 TO 25 KT. SEAS TO 8 FT.
WINDS AND SEAS HIGHER IN AND NEAR NUMEROUS SHOWERS AND TSTMS E
OF FRONT.

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


.FORECASTER GR. NATIONAL HURRICANE CENTER.

$$


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