METAREA 4 bulletinset


HIGH SEAS FORECAST
FZNT01 KWBC 251020

HSFAT1

HIGH SEAS FORECAST FOR METAREA IV

NWS OCEAN PREDICTION CENTER WASHINGTON DC

1030 UTC SAT APR 25 2026

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0600 UTC APR 25.

24 HOUR FORECAST VALID 0600 UTC APR 26.

48 HOUR FORECAST VALID 0600 UTC APR 27.

.WARNINGS.

...STORM WARNING...

.N OF 62N BETWEEN 51W AND 57W AREA OF N WINDS 25 TO 35 KT. SEAS

TO 2.5 TO 3.5 M.

.24 HOUR FORECAST NEW LOW 61N48W 1006 MB. N OF 60N BETWEEN 50W

AND 56W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE N OF 51N

W OF 45W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.

.42 HOUR FORECAST LOW 61N46W 996 MB. WITHIN 240 NM SW AND W

QUADRANTS WINDS 40 TO 50 KT. SEAS 5 TO 7.5 M.

.48 HOUR FORECAST LOW 61N45W 990 MB. WITHIN 240 NM SW AND W

QUADRANTS WINDS 40 TO 55 KT. SEAS 5 TO 8.5 M IN NW SWELL. ALSO

WITHIN 420 NM S AND SE...AND 300 NM W QUADRANTS WINDS 25 TO 40

KT. SEAS 4 TO 6.5 M. ELSEWHERE N OF 54N W OF 40W WINDS TO 25 KT.

SEAS 3 TO 6 M.

...STORM WARNING...

.30 HOUR FORECAST NEW LOW 63N37W 1002 MB. FROM 64N TO 66N BETWEEN

39W AND 35W WINDS 25 TO 40 KT. SEAS TO 3 M.

.36 HOUR FORECAST LOW 64N35W 999 MB. WITHIN 120 NM NW QUADRANT

WINDS 40 TO 50 KT. SEAS 3 TO 4.5 M.

.48 HOUR FORECAST LOW NEAR 64N36W 988 MB. WITHIN 150 NM NW

SEMICIRCLE WINDS 35 TO 50 KT. SEAS 2.5 TO 4 M. ELSEWHERE N OF 60N

E OF GREENLAND WINDS 25 TO 35 KT. SEAS TO 2.5 M.

...GALE WARNING...

.LOW 46N50W 982 MB MOVING NE 05 KT. WITHIN 360 NM SE SEMICIRCLE

WINDS 35 TO 45 KT. SEAS 4 TO 7 M. ALSO WITHIN 480 NM NE...660 NM

SE...420 NM SW AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5

M. ELSEWHERE FROM 40N TO 54N E OF 63W WINDS TO 25 KT. SEAS 2.5 TO

3.5 M.

.24 HOUR FORECAST LOW 48N48W 985 MB. WITHIN 360 NM SE QUADRANT

WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE...EXCEPT WHERE

OTHERWISE DESCRIBED...S OF 56N E OF 50W...AND S OF 50N E OF 62W

WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.

.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 50N45W 998

MB. WITHIN 420 NM SW AND 360 NM NW QUADRANTS WINDS 25 TO 40 KT.

SEAS 3 TO 6.5 M...HIGHEST NW OF CENTER. ELSEWHERE 1080 NM SE AND

960 NM SW QUADRANTS...EXCEPT WHERE OTHERWISE DESCRIBED...WINDS TO

25 KT. SEAS 2.5 TO 3.5 M.

...GALE WARNING...

.LOW 53N39W 1001 MB MOVING NW 15 KT AND DISSIPATING. WITHIN 90 NM

EITHER SIDE OF A LINE FROM 60N40W TO 56N50W WINDS 25 TO 40 KT.

SEAS 3 TO 4.5 M. ELSEWHERE FROM 54N TO 61N E OF 60W WINDS TO 25

KT. SEAS 2.5 TO 4 M.

.24 HOUR FORECAST CONDITIONS DESCRIBED WITH FIRST STORM WARNING

ABOVE.

...GALE WARNING...

.LOW 37N51W 1001 MB MOVING NE 40 KT THEN TURNING N AFTER 12

HOURS. WITHIN 240 NM SE SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 5

M. ELSEWHERE...EXCEPT WHERE OTHERWISE DESCRIBED...S OF 40N

BETWEEN 37W AND 68W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.

.24 HOUR FORECAST LOW 53N41W 988 MB. WITHIN 240 NM NE AND E

QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE

CONDITIONS DESCRIBED WITH FIRST GALE WARNING ABOVE.

.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED WITH FIRST GALE

WARNING ABOVE.

...GALE WARNING...

.LOW 39N59W 1002 MB MOVING E 25 KT. WITHIN 300 NM SW SEMICIRCLE

WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

.12 HOUR FORECAST LOW 39N54W 1000 MB. WITHIN 480 NM SW QUADRANT

WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.

.24 HOUR FORECAST NEW LOW 39N49W 997 MB. WITHIN 420 NM NE

QUADRANT AND WITHIN 300 NM S SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3

TO 5 M. ELSEWHERE CONDITIONS DESCRIBED WITH FIRST GALE WARNING

ABOVE.

.48 HOUR FORECAST LOW NEAR 52N35W 993 MB. FROM 46N TO 55N E OF

38W WINDS 25 TO 35 KT. SEAS 3 TO 5 M. CONDITIONS DESCRIBED WITH

FIRST GALE WARNING ABOVE.

...GALE WARNING...

.24 HOUR FORECAST NEW LOW 38N75W 1007 MB. WITHIN 300 NM NE AND E

QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.36 HOUR FORECAST LOW 37N72W 1009 MB. WITHIN 150 NM NW SEMICIRCLE

WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.

.48 HOUR FORECAST LOW 38N69W 1008 MB. WITHIN 180 NM NE QUADRANT

AND WITHIN 180 NM NW SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 4

M. ELSEWHERE FROM 32N TO 42N W OF 64W WINDS TO 25 KT. SEAS TO 3

M.

...HEAVY FREEZING SPRAY WARNING...

.LIGHT FREEZING SPRAY NW OF A LINE FROM 60N60W TO 67N51W.

.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE

FROM 62N57W TO 67N53W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY

NW OF A LINE FROM 59N59W TO 63N50W.

.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE

FROM 60N58W TO 67N51W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY

NW OF A LINE FROM 56N56W TO 60N43W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 57N

BETWEEN 46W AND 64W...FROM 50N TO 60N E OF 52W...AND N OF 60N

BETWEEN W GREENLAND COAST AND 53W.

.24 HOUR FORECAST DENSE FOG FROM 44N TO 60N E OF 58W...AND N OF

60N E OF GREENLAND.

.48 HOUR FORECAST DENSE FOG FROM 44N TO 54N BETWEEN 41W AND

52W...AND N OF 51N E OF 47W.

.FORECASTER ANDERSON. 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 0600 UTC SAT APR 25.

24 HOUR FORECAST VALID 0600 UTC SUN APR 26.

48 HOUR FORECAST VALID 0600 UTC MON APR 27.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N47W TO 31N63W TO 30N58W TO 29N52W TO 31N47W

WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NW SWELL.

.24 HOUR FORECAST WITHIN 31N39W TO 31N59W TO 28N56W TO 29N48W TO

31N39W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NW SWELL.

.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS

LESS THAN 2.5 M.

.ATLC WITHIN 31N35W TO 31N40W TO 30N44W TO 27N46W TO 26N40W TO

27N38W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO

NE SWELL.

.06 HOUR FORECAST CONDITIONS IMPROVE. 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 RAMOS. NATIONAL HURRICANE CENTER.

$$