474
FZNT01 KWBC 161540
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC FRI MAY 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

MARINERS SHOULD NOTE THAT FORECASTS FOR SEAS ARE IN UNITS OF
METERS.

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC MAY 16.
24 HOUR FORECAST VALID 1200 UTC MAY 17.
48 HOUR FORECAST VALID 1200 UTC MAY 18.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 57N43W 984 MB MOVING SW 05 KT.
WITHIN 90 NM W AND NW OF A LINE FROM 59N43W TO 57N46W WINDS 50 TO
65 KT. SEAS 4 TO 7 M. ELSEWHERE BETWEEN 60 NM AND 240 NM NW
SEMICIRCLE AND N OF 57N E OF 40 W WINDS 35 TO 50 KT. SEAS 3 TO 6
M. ALSO FROM 55N TO 60N E OF 50W...FROM 60N TO 62N W OF 40W TO E
GREENLAND AND FROM 60N TO 64N E OF 54W TO W GREENLAND WINDS 25 TO
35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 55N44W 993 MB.
WITHIN 90 NM S AND SW OF A LINE FROM 51N42W TO 52N45W WINDS 30 TO
40 KT. SEAS 3 TO 5.5 M. ELSEWHERE FROM 50N TO 60N E OF 57W WINDS
25 TO 35 KT. SEAS 3 TO 5 M. ALSO FROM 60N TO 62N E OF 52W TO W
GREENLAND AND N OF 60N E OF GREENLAND WINDS 20 TO 30 KT. SEAS 2.5
TO 4.5 M...HIGHEST E OF 38W.
.48 HOUR FORECAST LOW 55N41W 993 MB. BETWEEN 120 NM AND 300 NM NE
QUADRANT AND 120 NM AND 300 NM NW SEMICIRCLE WINDS 35 TO 50 KT.
SEAS 3 TO 6 M. ELSEWHERE BETWEEN 60 NM AND 540 NM NE AND 60 NM
AND 240 NM E QUADRANTS AND FROM 50N TO 60N BETWEEN 41W AND 50W
WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.

...GALE WARNING...
.LOW 53N43W 985 MB MOVING NW 10 KT.  E OF A LINE FROM 49N37W TO
51N37W AND WITHIN 240 NM S AND SW OF A LINE FROM 52N40W TO 52N44W
TO 54N48W WINDS 35 TO 45 KT. SEAS 3 TO 6 M. ELSEWHERE FROM 50N TO
55N E OF 38W AND WITHIN 600 NM SE...300 NM SW AND 660 NM NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW ABSORBED BY LOW 55N44W AND ASSOCIATED
CONDITIONS DESCRIBED ABOVE.

...GALE WARNING...
.LOW 49N53W 1004 MB MOVING E 30 KT. BETWEEN 240 NM AND 1080 NM
SE...180 NM AND 600 NM S AND 180 NM AND 1080 NM SW QUADRANTS
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.12 HOUR FORECAST LOW 46N41W 1002 MB. WITHIN 540 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW JUST E OF THE AREA 49N33W 993 MB. FROM 44N
TO 50N E OF 40W WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M. ELSEWHERE
FROM 36N TO 50N E OF 40W...BETWEEN 60 NM AND 660 NM W QUADRANT
AND WITHIN 240 NM S OF A LINE FROM 42N40W TO 37N75W WINDS 20 TO
30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW E OF THE AREA WITH NEW LOW TO FROM NEAR
40N42W 1009 MB. FROM 34N TO 40N E OF 60W AND WITHIN AN AREA
BOUNDED BY A LINE FROM 34N50W TO 31N73W TO 40N74W TO 40N60W TO
39N50W TO 34N50W WINDS 20 TO 30 KT. SEAS TO 3 M.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM NW AND
N OF A LINE FROM 39N70W TO 43N59W TO 43N49W...WITHIN 90 NM NE OF
A LINE FROM 55N53W TO 51N43W AND FROM 56N TO 60N BETWEEN 41W AND
49W.
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM NW OF A LINE FROM
40N70W TO 42N64W...WITHIN 60 NM N OF A LINE FROM 42N65W TO 41N57W
AND N OF 62N E OF GREENLAND.
.48 HOUR FORECAST DENSE FOG WITHIN 420 NM NW AND N OF A LINE FROM
41N68W TO 43N56W...INCLUDING THE BAY OF FUNDY AND THE W GULF OF
SAINT LAWRENCE.

.LIGHT FREEZING SPRAY W OF A LINE FROM 52N52W TO 56N56W AND N OF
65N W OF GREENLAND.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.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 AMERICA

SYNOPSIS VALID 1200 UTC FRI MAY 16.
24 HOUR FORECAST VALID 1200 UTC SAT MAY 17.
48 HOUR FORECAST VALID 1200 UTC SUN MAY 18.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N35W TO 31N48W TO 27N44W TO 26N39W TO 26N35W TO
31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL.
.24 HOUR FORECAST WITHIN 29N35W TO 27N37W TO 23N38W TO 22N37W TO
22N35W TO 29N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW
SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.ATLC WITHIN 13N44W TO 18N57W TO 16N59W TO 09N58W TO 07N50W TO
07N42W TO 13N44W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NE TO E
SWELL.
.24 HOUR FORECAST WITHIN 20N36W TO 21N59W TO 12N61W TO 06N50W TO
08N41W TO 20N36W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NE
SWELL E OF 44W AND IN E SWELL W OF 44W.
.48 HOUR FORECAST WITHIN 15N51W TO 17N61W TO 09N60W TO 07N57W TO
07N50W TO 09N47W TO 15N51W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M
IN NE SWELL E OF 44W AND IN E SWELL W OF 44W.

.GULF OF AMERICA 12 HOUR FORECAST WITHIN 22N87W TO 23N88W TO
23N90W TO 22N91W TO 21N90W TO 22N87W E WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WITHIN 22N87W TO 23N88W TO 23N90W TO 22N91W TO
21N90W TO 22N87W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.



.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

$$