North Atlantic High Seas Forecast

FZNT01 KWBC 312152
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC SUN MAY 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 

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 1800 UTC MAY 31. 
24 HOUR FORECAST VALID 1800 UTC JUN 01. 
48 HOUR FORECAST VALID 1800 UTC JUN 02. 

.WARNINGS. 

...STORM WARNING... 
.COMPLEX LOW WITH MAIN LOW 41N60W 993 MB MOVING NE 25 KT AND 
SECOND LOW 37N53W 1009 MB MOVING NE 30 KT. FROM 31N TO 44N 
BETWEEN 50W AND 65W WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M. 
.24 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 48N43W 998 MB AND 
SECOND LOW 45N51W 989 MB. WITHIN 240 NM S AND SW QUADRANTS WINDS 
35 TO 50 KT. SEAS 4.5 TO 7 M. ELSEWHERE FROM 37N TO 50N BETWEEN 
32W AND 56W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M. 
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW E OF AREA NEAR 
54N27W 989 MB. FROM 42N TO 54N E OF 42W WINDS 25 TO 40 KT. SEAS 
3 TO 7 M.  

.SYNOPSIS AND FORECAST. 

.N OF 56N E OF 45W AREA OF NE TO N WINDS TO 25 KT. SEAS TO 3.5 
M. 
.24 HOUR FORECAST CONDITIONS DIMINISHED. 

.24 HOUR FORECAST NEW LOW 32N77W 1010 MB. WITHIN 180 NM N AND E 
QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. 
.48 HOUR FORECAST LOW AND CONDITIONS MOVED S OF AREA.  

.48 HOUR FORECAST W OF A LINE FROM 38N68W TO 33N73W WINDS 20 TO 
30 KT. SEAS TO 3 M. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 45N 
BETWEEN 50W AND 60W. 
.24 HOUR FORECAST DENSE FOG FROM 43N TO 49N BETWEEN 42W AND 55W. 
.48 HOUR FORECAST DENSE FOG FROM 59N TO 63N BETWEEN 49W AND 54W. 


.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA

SYNOPSIS VALID 1800 UTC SUN MAY 31.
24 HOUR FORECAST VALID 1800 UTC MON JUN 01.
48 HOUR FORECAST VALID 1800 UTC TUE JUN 02.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC COLD FRONT FROM 31N64W TO 26N77W. N OF 26N E OF FRONT TO 
60W 
SW WINDS WINDS 25 TO 35 KT. SEAS 3.0 TO 4.0 M. ELSEWHERE N OF 
26N E 
OF FRONT TO A LINE FROM 31N51W TO 26N65W S TO SW WINDS 20 TO 30 
KT. 
SEAS 2.5 TO 3.0 M. N OF 28N W OF FRONT TO 67W NW TO N WINDS 20 
TO 25 
KT. SEAS 2.5 TO 3.0 M. 
.12 HOUR FORECAST COLD FRONT FROM 31N58W TO 27N66W TO 24N70W. N 
OF 
27N E OF FRONT TO A LINE FROM 31N51W TO 27N61W S TO SW WINDS 20 
TO 
30 KT...WITH HIGHER GUSTS. SEAS 2.5 TO 4.0 M. N OF 28N W OF 
FRONT TO 
65W NW TO N WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M IN NW SWELL. N 
OF 
30N BETWEEN 65W AND 70W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW 
SWELL. 
.24 HOUR FORECAST COLD FRONT FROM 31N58W TO 28N65W. N OF 28N E 
OF 
FRONT TO A LINE FROM 31N55W TO 28N60W S TO SW WINDS 20 TO 30 KT. 
SEAS 2.5 TO 3.5 M. ELSEWHERE N OF 29N E OF FRONT TO A LINE FROM 
31N52W TO 29N56W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW 
SWELL. N 
OF 29N W OF FRONT TO 63W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M 
IN 
NW SWELL.  
.48 HOUR FORECAST NEW COLD FRONT FROM 31N69W TO 27N77W. N OF 27N 
E 
OF FRONT TO A LINE FROM 31N55W TO 27N60W S TO SW WINDS 20 TO 30 
KT. 
SEAS 2.5 TO 3.0 M.  

.SYNOPSIS AND FORECAST.

.ATLC FROM 11N TO 22N E OF 42W NE TO E WINDS 20 TO 25 KT. SEAS 
2.5 
TO 3.0 M. 
.12 HOUR FORECAST FROM 12N TO 24N E OF 50W NE TO E WINDS 20 TO 
25 
KT. SEAS 2.5 TO 3.0 M. 
.24 HOUR FORECAST N OF 13N TO A LINE FROM 26N35W TO 24N45W TO 
20N51W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.ATLC 18 HOUR FORECAST SURFACE TROUGH FROM 31N78W TO 29N80W. N 
OF 
30N E OF TROUGH TO 75W S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 
M. 
.24 HOUR FORECAST SURFACE TROUGH FROM 31N76W TO 29N80W. N OF 29N 
E 
OF TROUGH TO 73W S TO SW WINDS 20 TO 25 KT. SEAS TO 2.5 M. 
.48 HOUR FORECAST CONDITIONS MERGED.

.CARIBBEAN FROM 11N TO 15N BETWEEN 70W AND 78W...INCLUDING GULF 
OF 
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS BUILDING TO 2.5 TO 
3.0 
M...HIGHEST OFFSHORE COLOMBIA.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST FROM 11N TO 17N E OF 78W...INCLUDING GULF OF 
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M IN NE 
TO E 
SWELL...HIGHEST OFFSHORE COLOMBIA.
.48 HOUR FORECAST 11N TO 17N BETWEEN 66W AND 78W...INCLUDING 
GULF OF 
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M 

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.