777
FZNT01 KWBC 152215
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT AUG 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 15.
24 HOUR FORECAST VALID 1800 UTC AUG 16.
48 HOUR FORECAST VALID 1800 UTC AUG 17.

.WARNINGS.

...GALE WARNING...
.LOW 35N72W 1017 MB MOVING E 35 KT NEXT 24 HOURS THEN TURNING
NE. WITHIN 180 NM S OF A STATIONARY FRONT FROM LOW TO 35N64W
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 35N56W 1010 MB. FROM 31N TO 36N BETWEEN
48W AND 65W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 41N45W 1008 MB. WITHIN 120 NM NW
SEMICIRCLE AND 240 NM E AND SE QUADRANTS WINDS 25 TO 35 KT. SEAS
2.5 TO 4 M. ELSEWHERE WITHIN 180 NM W SEMICIRCLE...300 NM NE AND
360 NM E AND SE QUADRANTS AND WITHIN 240 NM E OF A FRONT FROM
LOW TO 37N47W TO 31N53W WINDS 20 TO 30 KT. SEAS TO 3 M.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH MAIN LOW 49N52W 1004 MB MOVING SE 10 KT AND A
NEW SECOND LOW 49N42W 1005 MB MOVING NE 20 KT. FRONT EXTENDS
FROM SECOND LOW TO 40N48W TO 36N57W. FROM 42N TO 53N BETWEEN 51W
AND 58W AND WITHIN 240 NM SE OF FRONT WINDS 20 TO 30 KT. SEAS TO
3.5 M...HIGHEST NEAR 40N46W.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 55N37W 1000 MB.
FRONT TO EXTEND FROM 46N35W TO 37N48W. WITHIN 300 NM S AND SE
QUADRANTS AND WITHIN 180 NM E AND SE OF FRONT WINDS 20 TO 30 KT.
SEAS TO 3 M...HIGHEST NEAR 41N39W.
.48 HOUR FORECAST LOW E OF AREA NEAR 61N27W 994 MB. W OF 35W
WITHIN 300 NM NW...540 NM W AND 420 NM SW QUADRANTS WINDS 20 TO
30 KT. SEAS TO 3 M.

.LOW 60N37W 1005 MB NEARLY STATIONARY. WITHIN 180 NM N AND NW
SEMICIRCLES WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 61N38W 1006 MB. WITHIN 240 NM W AND NW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW E OF AREA
61N27W ABOVE.

.LOW 64N61W 1002 MB DRIFTING NW. FROM 60N TO 63N W OF 58W WINDS
TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 65N62W 1007 MB. WITHIN 240 NM NE QUADRANT
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.48 HOUR FORECAST INLAND LOW 56N68W 999 MB. WITHIN THE GULF OF
SAINT LAWRENCE W OF 62W AND FROM 35N TO 42N W OF 67W WINDS TO 25
KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 53N
BETWEEN 46W AND 53W...FROM 43N TO 49N E OF 46W... FROM 52N TO
54N BETWEEN 38W AND 46W...FROM 58N TO 60N E OF 38W...FROM 60N TO
64N BETWEEN 49W AND 54W...AND N OF 64N W OF 56W.
.24 HOUR FORECAST DENSE FOG FROM 52N TO 55N E OF 37W...AND N OF
65N W OF 60W.
.48 HOUR FORECAST DENSE FOG N OF 65N W OF 59W.

.FORECASTER BANCROFT. 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 SAT AUG 15.
24 HOUR FORECAST VALID 1800 UTC SUN AUG 16.
48 HOUR FORECAST VALID 1800 UTC MON AUG 17.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.CARIBBEAN FROM 11N TO 17.5N BETWEEN 68W AND 83W...INCLUDING THE
GULF OF VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 3.0 TO 4.5 M
FROM 11N TO 13N BETWEEN 76W AND 79W...AND 2.5 TO 3.0 M
ELSEWHERE. S OF 11N E OF 82W WINDS 20 KT OR LESS. SEAS 2.5 TO
4.0 M IN NE
SWELL.
.06 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 76W NE TO E
WINDS 25 TO 35 KT. SEAS 3.0 TO 4.0 M. ELSEWHERE FROM 11N TO 18N
BETWEEN 64W AND 82W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20
TO 25 KT. SEAS 2.5 TO 3.5 M IN E SWELL. S OF 11N WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN NE SWELL.
.24 HOUR FORECAST CONDITIONS MERGED WITH TRPCL WAVE.

.SYNOPSIS AND FORECAST.

.ATLC 24 HOUR FORECAST COLD FRONT JUST N OF AREA. N OF 29N
BETWEEN 60W AND 65W SW TO W WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.30 HOUR FORECAST COLD FRONT FROM 31N59W TO 31N70W. N OF 28.5N
AND SE OF FRONT TO A LINE FROM 31N56W TO 28.5N63W SW TO W WINDS
20
TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST COLD FRONT FROM 31N55W TO 29N74W. N OF 29N AND
SE OF FRONT TO A LINE FROM 31N48W TO 29N56W SW WINDS 20 TO 25
KT.
SEAS TO 2.5 M.

.ATLC AND CARIBBEAN 06 HOUR FORECAST FROM 18.5N TO 22N BETWEEN
70W AND 77W...INCLUDING THE WINDWARD PASSAGE...NE TO E WINDS 20
TO
30 KT WITH HIGHER GUSTS. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST FROM 19N TO 21N BETWEEN 72W AND
77W...INCLUDING THE WINDWARD PASSAGE...NE TO E WINDS 20 TO 25
KT. SEAS LESS THAN
2.5 M.
.30 HOUR FORECAST FROM 19N TO 21N BETWEEN 70W AND
76W...INCLUDING THE WINDWARD PASSAGE...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.

.ATLC AND CARIBBEAN TRPCL WAVE ALONG 65W. FROM 11N TO 20N E OF
WAVE
AXIS TO 55W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES...E
TO SE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. FROM 13N TO 20N W OF
WAVE
AXIS TO 68W...INCLUDING THE MONA PASSAGE...NE TO E WINDS 20 TO
30 KT.
SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST TRPCL WAVE ALONG 74W. FROM 11N TO 17.5N E OF
WAVE AXIS TO 64W E TO SE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M IN
E
SWELL.
FROM 12N TO 17.5N W OF WAVE AXIS TO 82W NE TO E WINDS 20 TO 25
KT. SEAS 2.5 TO 3.5 M IN NE TO E SWELL. S OF 11N E OF 80W WINDS
20
KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST TRPCL WAVE ALONG 80W. FROM 11N TO 17.5N
BETWEEN 70W AND 80W...INCLUDING THE GULF OF VENEZUELA...E WINDS
20 TO 25
KT. SEAS 2.5 TO 3.0 M.

.CARIBBEAN 06 HOUR FORECAST S OF 17N W OF 86W...INCLUDING THE
GULF OF HONDURAS...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5
M.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.GULF OF AMERICA 06 HOUR FORECAST FROM 19N TO 22N BETWEEN 89W
AND 92W N TO NE 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.
.30 HOUR FORECAST FROM 19N TO 21N BETWEEN 90W AND 92W N 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 GR. NATIONAL HURRICANE CENTER.