North Atlantic High Seas Forecast

FZNT01 KWBC 132158
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED AUG 13 2025

CCODE/2:31:04:11:00/AOE+AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 AUG 13. 
24 HOUR FORECAST VALID 1800 UTC AUG 14.
48 HOUR FORECAST VALID 1800 UTC AUG 15.

.WARNINGS.

...STORM WARNING...
.LOW 59N69W 991 MOVING NE 20 KT. WITHIN 240 NM NE QUADRANT WINDS
25 TO 35 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 480 NM NE QUADRANT
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.18 HOUR FORECAST LOW 64N56W 989 MB. FROM 60N TO 64N BETWEEN
GREENLAND COAST AND 53W WINDS 35 TO 50 KT. SEAS 3 TO 5 M.
.24 HOUR FORECAST LOW 65N55W 994 MB. WITHIN 120 NM W OF THE
GREENLAND COAST N OF 60N AND WITHIN 240 NM N AND 360 NM W
QUADRANTS WINDS 30 TO 45 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE WITHIN
480 NM W QUADRANT AND FROM 52N TO 57N BETWEEN 47W AND 57W WINDS
20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 65N52W 1005 MB
AND SECOND CENTER 61N49W 1006 MB. N OF 52N W OF 52W AND WITHIN
300 NM SE OF SECOND CENTER WINDS 20 TO 30 KT. SEAS TO 3.5 M.

.SYNOPSIS AND FORECAST.

.LOW 43N61W 1011 MB MOVING N 20 KT. FROM 39N TO 44N BETWEEN 58W
AND 63W WINDS 20 TO 30 KT. SEAS TO 3 M. 
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED BELOW WITH
LOW 51N62W.

.FROM 58N TO 60N BETWEEN 40W AND 45W WINDS 20 TO 30 KT. SEAS TO
2.5 M.
.24 HOUR FORECAST NEW LOW 63N39W 1010 MB. FROM 54N TO 61N BETWEEN
35W AND 47W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW WELL NE OF AREA. FROM 54N TO 62N E OF 42W
AREA OF S TO SW WINDS TO 25 KT. SEAS TO 2.5 M.

.24 HOUR FORECAST LOW 51N62W 1007 MB. FROM 45N TO 52N BETWEEN 50W
AND 67W WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW 48N55W 1012 MB. FROM 43N TO 50N BETWEEN 53W
AND 65W WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.

.48 HOUR FORECAST NEW LOW 39N62W 1012 MB. WITHIN 180 NM E AND 240
NM S QUADRANTS WINDS TO 25 KT. SEAS LESS THAN 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM BETWEEN CANADIAN
COAST AND A LINE FROM 64N64W TO 59N58W TO 58N52W TO
51N47W...WITHIN 60 NM OF 59N49W...AND FROM 46N TO 48N BETWEEN 52W
AND 61W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 66N BETWEEN 41W AND 59W
AND WITHIN 60 NM OF 45N67W.
.48 HOUR FORECAST DENSE FOG BETWEEN 49W AND A LINE FROM 61N35W TO
43N44W AND WITHIN 60 NM OF 50N53W.

.FORECASTER JOSEPH. 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 1800 UTC WED AUG 13.
24 HOUR FORECAST VALID 1800 UTC THU AUG 14.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 15.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM ERIN NEAR 16.3N 45.0W 1001 MB AT 2100 UTC AUG 13
MOVING W OR 270 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 4 M OR GREATER WITHIN 90 
NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW QUADRANT...AND 45 NM
NW QUADRANT WITH SEAS TO 4.5 M. ELSEWHERE WITHIN 18N43W TO 
18N45W TO 17N46W TO 15N45W TO 15N43W TO 17N42W TO 18N43W WINDS 20
TO 33 KT. SEAS 3.0 TO 4.5 M. REMAINDER OF AREA WITHIN 21N39W TO 
22N44W TO 18N46W TO 18N43W TO 15N43W TO 19N37W TO 21N39W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ERIN NEAR 16.9N 50.1W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM N SEMICIRCLE AND 20 NM S SEMICIRCLE. SEAS 4 M OR 
GREATER WITHIN 90 NM N SEMICIRCLE WITH SEAS TO 4.5 M. ELSEWHERE 
WITHIN 19N48W TO 19N50W TO 17N51W TO 16N52W TO 15N49W TO 17N48W 
TO 19N48W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.5 M. REMAINDER OF AREA
WITHIN 20N41W TO 23N44W TO 23N50W TO 19N52W TO 18N48W TO 15N49W 
TO 20N41W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.36 HOUR FORECAST HURRICANE ERIN NEAR 17.6N 53.0W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.48 HOUR FORECAST HURRICANE ERIN NEAR 18.4N 55.9W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 120 
NM N SEMICIRCLE AND 45 NM S SEMICIRCLE WITH SEAS TO 6.0 M. 
ELSEWHERE WITHIN 20N54W TO 21N54W TO 21N57W TO 19N57W TO 18N56W 
TO 18N54W TO 20N54W WINDS 20 TO 33 KT. SEAS 3.5 TO 6.0 M.
REMAINDER OF AREA WITHIN 24N50W TO 25N55W TO 22N59W TO 21N54W TO
17N55W TO 20N48W TO 24N50W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 
M IN MIXED SWELL.

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.

.CARIBBEAN WITHIN 13N72W TO 13N75W TO 13N77W TO 12N78W TO 11N78W
TO 12N73W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 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 ERA. NATIONAL HURRICANE CENTER.

$$