North Atlantic High Seas Forecast

Ocean Prediction Center · issued Sat, Sep 26, 4:14 AM UTC

The North Atlantic between 31°N and 67°N, from the coast of North America to 35°W. Winds in knots, seas in meters, positions in degrees of latitude and longitude.

Warnings in the forecast

Each warning heads a weather system in the text below.

Storm Warning: 1 system
Tropical Storm Warning: 1 system
Gale Warning: 4 systems

The forecast

As issued Sat, Sep 26, 4:14 AM UTC. Superseded by the next issuance six hours later.

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT SEP 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 26.
24 HOUR FORECAST VALID 0000 UTC SEP 27.
48 HOUR FORECAST VALID 0000 UTC SEP 28.

.WARNINGS.

...STORM WARNING...
.LOW 38N71W 992 MB DRIFTING N 05 KT. WITHIN 120 NM NW AND W OF A
FRONT FROM 37N72W TO 39N72W TO 40N69W WINDS 40 TO 60 KT. SEAS 4
TO 8.5 M...HIGHEST NEAR 38N73W. ELSEWHERE WITHIN 240 NM S
SEMICIRCLE...AND WITHIN 180 NM NW AND N OF A FRONT FROM 37N72W TO
39N72W TO 40N69W TO 40N64W...WINDS 30 TO 45 KT. SEAS 3 TO 8 M.
ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE FROM 31N81W TO 31N65W
TO 40N57W TO 44N57W TO 44N72W TO 31N81W WINDS 20 TO 30 KT. SEAS
2.5 TO 6 M.
.24 HOUR FORECAST LOW 39N72W 989 MB. WITHIN 180 NM NW QUADRANT
WINDS 35 TO 50 KT. SEAS 3 TO 7 M...HIGHEST NEAR 40N73W. ELSEWHERE
FROM 36N TO 42N BETWEEN 75W AND 68W WINDS 30 TO 45 KT. SEAS 3 TO
6 M. ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE FROM 31N80W TO
31N64W TO 44N56W TO 44N72W TO 31N80W WINDS 20 TO 30 KT. SEAS 2.5
TO 5 M.
.48 HOUR FORECAST LOW 39N74W 997 MB. WITHIN 180 NM EITHER SIDE OF
A LINE FROM 33N70W TO 42N70W TO 43N54W WINDS 20 TO 30 KT. SEAS
2.5 TO 4 M.

...GALE WARNING...
.LOW JUST E OF AREA 57N33W 986 MB MOVING E 25 KT TURNING NE AFTER
06 HOURS. FROM 51N TO 57N BETWEEN 39W AND 35W WINDS 25 TO 35 KT.
SEAS 4 TO 5.5 M. ELSEWHERE FROM 43N TO 66N BETWEEN 43W AND 35W
WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M.
.24 HOUR FORECAST LOW WELL E OF AREA. CONDITIONS MOVED E OF
AREA.

...GALE WARNING...
.LOW 41N55W 1009 MB MOVING E 20 KT. FROM 41N TO 43N BETWEEN 54W
AND 50W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 39N TO
44N BETWEEN 57W AND 49W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 41N44W 1007 MB. FROM 41N TO 43N BETWEEN 46W
AND 42W WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE FROM 37N TO
44N BETWEEN 52W AND 37W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW JUST E OF AREA 40N34W 1002 MB. FROM 33N TO
43N BETWEEN 45W AND 35W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.

...GALE WARNING...
.WITHIN 90 NM EITHER SIDE OF A LINE FROM 62N53W TO 57N45W AREA OF
NW WINDS 30 TO 40 KT. SEAS 3 TO 5.5 M. ELSEWHERE WITHIN AN AREA
BOUNDED BY A LINE FROM 46N43W TO 60N43W TO 66N53W TO 66N58W TO
55N57W TO 46N43W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST WITHIN AN AREA BOUNDED BY A LINE FROM 44N35W TO
64N35W TO 54N54W TO 49N51W TO 44N35W WINDS 20 TO 30 KT. SEAS 2.5
TO 5.5 M...HIGHEST NEAR 56N36W.
.48 HOUR FORECAST CONDITIONS MOVED E OF AREA.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 56N51W 999 MB. WITHIN 90 NM EITHER SIDE
OF A LINE FROM 57N58W TO 55N51W WINDS 25 TO 35 KT. SEAS TO 3.5
M.
.48 HOUR FORECAST LOW 54N35W 994 MB. WITHIN 480 NM SW QUADRANT
WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M. ELSEWHERE WITHIN AN AREA
BOUNDED BY A LINE FROM 43N47W TO 43N35W TO 65N35W TO 58N58W TO
49N54W TO 43N47W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.

.SYNOPSIS AND FORECAST.

.FROM 31N TO 34N BETWEEN 46W AND 40W AREA OF E WINDS TO 25 KT
ASSOCIATED WITH TROPICAL STORM FAY CENTERED S OF AREA. SEAS TO 3
M. ADDITIONAL DETAILS PROVIDED IN TROPICAL STORM WARNING IN PART
II.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.FROM 33N TO 39N BETWEEN 47W AND 35W AREA OF E WINDS LESS THAN 25
KT. SEAS TO 3 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 63N TO 67N BETWEEN 57W AND 54W AREA OF N
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS ABSORBED BY LOW 54N35W DESCRIBED IN
LAST GALE WARNING ABOVE.

.48 HOUR FORECAST FROM 66N TO 67N BETWEEN 61W AND 58W AREA OF N
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.

.LIGHT FREEZING SPRAY BETWEEN A LINE FROM 64N41W TO 65N37W AND
THE E COAST OF GREENLAND.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

 DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM EITHER
SIDE OF A LINE FROM 42N52W TO 39N48W.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM EITHER SIDE OF A LINE
FROM 42N42W TO 38N37W...AND WITHIN 60 NM EITHER SIDE OF A LINE
FROM 40N73W TO 42N70W TO 42N64W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 43N BETWEEN 69W AND 65W.

.FORECASTER CONNELLY. 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 0000 UTC SAT SEP 26.
24 HOUR FORECAST VALID 0000 UTC SUN SEP 27.
48 HOUR FORECAST VALID 0000 UTC MON SEP 28.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM FAY NEAR 29.9N 43.4W 1006 MB AT 0300 UTC SEP 26
MOVING WSW OR 250 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...30 NM NE QUADRANT AND 60 NM NW QUADRANT.  SEAS 4 M
OR GREATER WITHIN 60 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE WITH
SEAS TO 5.5 M. ELSEWHERE WITHIN 31N40W TO 30N44W TO 31N47W TO 
30N47W TO 28N44W TO 29N43W TO 31N40W WINDS 20 TO 33 KT. SEAS 2.5
TO 3.0 M.
.24 HOUR FORECAST TROPICAL DEPRESSION FAY NEAR 29.9N 43.8W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 3.0 M. 
ELSEWHERE WITHIN 30N43W TO 31N43W TO 31N45W TO 30N46W TO 29N45W 
TO 29N44W TO 30N43W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW FAY NEAR 28.3N 
44.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 3.0 M.
ELSEWHERE WITHIN 28N44W TO 29N44W TO 29N46W TO 28N46W TO 27N44W 
TO 28N44W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N66W TO 30N81W TO 25N80W TO 29N68W TO 
31N66W...INCLUDING ATLANTIC EXPOSURES...NW TO N WINDS 20 TO 25 
KT. SEAS 2.5 TO 3.0 M. 
.24 HOUR FORECAST WITHIN 31N62W TO 30N80W TO 26N80W TO 26N75W TO
28N71W TO 29N66W TO 31N62W...INCLUDING ATLANTIC EXPOSURES... 
WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. 
.48 HOUR FORECAST WITHIN 29N63W TO 30N64W TO 29N65W TO 28N66W 
TO 27N65W TO 27N64W TO 29N63W WINDS 20 KT OR LESS. SEAS 2.5 TO 
3.0 M IN NW SWELL.

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


.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.

$$

Nearby

Open the live map with marine zones and buoys Tropical Atlantic, Caribbean and Gulf of America North Pacific Eastern Tropical Pacific Central North Pacific

Sources

Ocean Prediction Center, product HSFAT1, issued Sat, Sep 26, 4:14 AM UTC. Original at NWS. Zone outlines from the NWS marine and offshore zone boundaries. Warnings and advisories from the NWS API. All public domain, from the National Weather Service.