High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 211532
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAR 21.
24 HOUR FORECAST VALID 1200 UTC MAR 22.
48 HOUR FORECAST VALID 1200 UTC MAR 23.

.WARNINGS.

...STORM WARNING...
.FROM 57N TO 60N E OF 43W AREA OF W WINDS 30 TO 40 KT. SEAS 10 TO
19 FT...HIGHEST NEAR 60N35W. ELSEWHERE FROM 49N TO 60N BETWEEN
35W AND 40W AND FROM 48N TO 60N BETWEEN 46W AND 40W AREA OF W
WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.
.12 HOUR FORECAST NEW LOW 63N39W 1004 MB. FROM 57N TO 60N E OF
44W WINDS 35 TO 50 KT. SEAS 13 TO 25 FT...HIGHEST NEAR 61N35W.
.24 HOUR FORECAST LOW 63N37W 1008 MB. FROM 58N TO 60N E OF 43W
WINDS 30 TO 45 KT. SEAS 14 TO 22 FT. ELSEWHERE FROM 56N TO 60N E
OF 45W AND N OF 60N E OF GREENLAND WINDS 20 TO 30 KT. SEAS 9 TO
17 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW AND CONDITIONS E OF THE AREA.

...STORM WARNING...
.INLAND LOW 46N68W 990 MB MOVING NE 15 KT. BETWEEN 120 NM AND 300
NM NE...WITHIN 540 NM SE AND BETWEEN 90 NM AND 420 NM S AND SW
QUADRANTS WINDS 30 TO 40 KT. SEAS 9 TO 15 FT...EXCEPT TO 8 FT IN
THE GULF OF SAINT LAWRENCE. ELSEWHERE WITHIN 480 NM E...600 NM SE
AND 660 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 50N62W 990 MB. WITHIN 240 NM NW AND N OF A
FRONT FROM 55N58W TO 55N51W...WITHIN 180 NM N AND NE OF FRONT
FROM 55N51W TO 51N48W WINDS 35 TO 50 KT. SEAS 12 TO 20 FT.
ELSEWHERE BETWEEN 300 NM AND 660 NM NE...WITHIN 600 NM E AND
WITHIN 660 NM SE AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 15
FT.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 58N58W 994 MB
AND SECOND CENTER 57N41W 992 MB. WITHIN 90 NM N AND NE OF A LINE
FROM
61N59W TO 58N47W AND WITHIN 240 NM NW SEMICIRCLE OF SECOND LOW
WINDS 35 TO 50 KT. SEAS 14 TO 26 FT. ELSEWHERE FROM 46N TO 52N
BETWEEN 38W AND 58W...BETWEEN 120 NM AND 360 NM NE QUADRANT OF
FIRST LOW AND WITHIN 480 NM NE AND 420 NM SE QUADRANTS OF SECOND
LOW WINDS 25 TO 40 KT. SEAS 9 TO 17 FT. ALSO FROM 43N TO 57N W OF
35W WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW 34N53W 1012 MB MOVING NE 35 KT. FROM 31N TO 45N BETWEEN 35W
AND 55W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.18 HOUR FORECAST LOW 44N44W 1011 MB. WITHIN 480 NM N...420 NM NE
AND 600 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 15
FT...HIGHEST S QUADRANT.
.24 HOUR FORECAST LOW 47N44W 1008 MB. WITHIN 480 NM NE...300 NM
E...420 NM SE AND 720 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO
16 FT...HIGHEST S QUADRANT.
.48 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED ABOVE
WITH LOW 57N41W.

...GALE WARNING...
.36 HOUR FORECAST FROM 31N TO 35N W OF 71W AREA OF SE WINDS 25 TO
35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST NEW INLAND LOW 35N77W 999 MB. WITHIN 300 NM E
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 9 TO 18 FT...HIGHEST NEAR
34N76W. ELSEWHERE FROM 31N TO 40N W OF 65W WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 62N W OF GREENLAND.
ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 57N W OF 47W AND
N OF 60N W OF 37W TO THE GREENLAND COAST.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF
48W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW AND N OF A
LINE FROM 41N71W TO 45N61W TO 48N59W INCLUDING THE BAY OF FUNDY
AND THE GULF OF SAINT LAWRENCE...N 0F 58N W OF 48W AND N OF 60N W
OF 39W TO GREENLAND.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 65N W OF
GREENLAND. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY IN THE GULF
OF SAINT LAWRENCE...FROM 47N TO 54N W OF 49W AND N OF 62N W OF
GREENLAND.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 47N
BETWEEN 53W AND 64W AND IN THE GULF OF SAINT LAWRENCE.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 57N BETWEEN 42W AND 55W
AND IN THE GULF OF SAINT LAWRENCE.
.48 HOUR FORECAST DENSE FOG FROM 59N TO 64N W OF GREENLAND...FROM
56N TO 60N BETWEEN 35W AND 53W AND FROM 51N TO 54N W OF 48W.

.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 1200 UTC THU MAR 21.
24 HOUR FORECAST VALID 1200 UTC FRI MAR 22.
48 HOUR FORECAST VALID 1200 UTC SAT MAR 23.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 24 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.
.36 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 SE TO S
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT N AND E OF THE BAHAMAS. FROM
21N TO 28N BETWEEN 59W AND 70W NE TO E WINDS 20 TO 25 KT. SEAS
TO 8 FT.
.48 HOUR FORECAST FRONTAL SYSTEM W OF AREA OVER E GULF OF
MEXICO. N OF 27N BETWEEN 74W AND 80W SE TO S WINDS 30 TO 35 KT.
SEAS 10 TO 14 FT. ELSEWHERE N OF 20N W OF 70W SE TO S WINDS 20
TO 30 KT. SEAS 8 TO 11 FT NE OF THE BAHAMAS. N OF 20N BETWEEN
55W AND 70W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. N OF A
LINE FROM 26N50W TO 24N55W NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.SYNOPSIS AND FORECAST.

.ATLC LOW PRES N OF AREA NEAR 34N53W 1012 MB WITH COLD FRONT TO
23N61W THEN STATIONARY FRONT TO 20N70W. N OF 29N 48W AND 55W
WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N51W TO 23N55W THEN
WEAKENING STATIONARY FRONT TO 20N70W. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

.ATLC AND CARIBBEAN 12 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 LITTLE CHANGE.
.36 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...EXCEPT LESS THAN 8 FT IN THE GULF OF VENEZUELA.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

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

.GULF OF MEXICO 12 HOUR FORECAST LOW PRES ALONG A FRONTAL
BOUNDARY NEAR THE CENTRAL TEXAS COAST. N OF 27N BETWEEN 90W AND
96W E TO SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW PRES NEAR 29N93W WITH COLD FRONT TO
19N96W. FROM 22N TO 28N E OF 91W SE TO S WINDS 20 TO 30 KT. SEAS
BUILDING TO TO 9 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 LOW PRES TO MOVE INLAND THE SE U.S. COLD FRONT
FROM LOW CENTER TO 20N88W. N OF 27N W OF FRONT TO 96W NW TO N
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. S OF 26N E OF
85W...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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