HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SUN AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 16.
24 HOUR FORECAST VALID 0000 UTC AUG 17.
48 HOUR FORECAST VALID 0000 UTC AUG 18.
.WARNINGS.
...GALE WARNING...
.24 HOUR FORECAST LOW 35N53W 1010 MB. FROM 32N TO 35N BETWEEN 48W
AND 54W WINDS 20 TO 30 KT. SEAS TO 3 M.
.30 HOUR FORECAST LOW 36N50W 1009 MB. FROM 31N TO 38N BETWEEN 44W
AND 53W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 42N43W 1013 MB. FROM 38N TO 45N BETWEEN 37W
AND 46W WINDS 25 TO 35 KT. SEAS TO 4 M.
.SYNOPSIS AND FORECAST.
.LOW 50N42W 1007 MB MOVING NE 25 KT. WITHIN 240 NM E OF A FRONT
EXTENDING FROM 46N40W TO 35N51W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW E OF AREA 57N30W 998 MB. FROM 53N TO 56N
BETWEEN 35W AND 37W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW E OF AREA 60N24W 997 MB. E OF A LINE FROM
56N35W TO 60N46W...AND FROM 61N TO 64N BETWEEN 38W AND 41W WINDS
20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 60N38W 1006 MB. FROM 59N TO 64N BETWEEN 39W
AND 41W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED ABOVE WITH
LOW 60N24W.
.48 HOUR FORECAST LOW INLAND 56N65W 1000 MB. FROM 46N TO 50N
BETWEEN 60W AND 65W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 41N71W 1010 MB. FROM 36N TO 40N BETWEEN 66W
AND 72W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 47N TO 52N
BETWEEN 35W AND 45W...AND N OF 63N W OF 59W.
.24 HOUR FORECAST DENSE FOG FROM 55N TO 57N BETWEEN 35W AND 37W
E OF 37W...AND N OF 65N W OF 60W.
.48 HOUR FORECAST DENSE FOG FROM 57N TO 60N BETWEEN 59W AND
63W...AND N OF 64N W OF 60W.
.FORECASTER HUFFMAN. 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 SUN AUG 16.
24 HOUR FORECAST VALID 0000 UTC MON AUG 17.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 18.
.WARNINGS.
...CARIBBEAN GALE WARNING...
.WITHIN 11N74W TO 12N75W TO 11N75W TO 11N74W NE WINDS 25 TO 35
KT. SEAS 2.5 TO 3.0 M. WITHIN 19N68W TO 16N82W TO 11N84W TO
09N77W TO 12N73W TO 13N63W TO 19N68W...INCLUDING IN MONA PASSAGE
AND IN ATLANTIC EXPOSURES AND PASSAGES AND WITHIN 60 NM OF COAST
OF NICARAGUA AND THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 30
KT. SEAS 2.5 TO 3.0 M.
.12 HOUR FORECAST WITHIN 17N66W TO 18N75W TO 15N82W TO 09N82W
TO 13N73W TO 12N66W TO 17N66W...INCLUDING IN MONA PASSAGE AND
WITHIN 60 NM OF COAST OF NICARAGUA...NE TO E WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 15N68W TO 18N72W TO 18N78W TO 12N82W
TO 11N69W TO 15N68W...INCLUDING BETWEEN CUBA AND JAMAICA AND IN
MONA PASSAGE AND THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 30
KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 16N73W TO 17N77W TO 15N80W TO 12N80W TO
11N72W TO 12N69W TO 16N73W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 19N60W TO 20N63W TO 19N65W TO 14N61W TO 15N57W TO
16N57W TO 19N60W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E TO SE
SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS.
SEAS LESS THAN 2.5 M.
.ATLC 33 HOUR FORECAST WITHIN 31N50W TO 31N54W TO 30N54W TO
30N51W TO 31N50W SW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC AND CARIBBEAN WITHIN 21N72W TO 22N74W TO 20N74W TO 19N76W
TO 18N76W TO 20N71W TO 21N72W...INCLUDING BETWEEN CUBA AND
JAMAICA...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 M TO 3.0 M. WITHIN
22N79W TO 22N80W TO 21N80W TO 20N80W TO 20N79W TO 21N78W TO
22N79W NE WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 21N71W TO 21N73W TO 20N75W TO 19N74W TO
20N73W TO 20N71W TO 21N71W NE TO E WINDS 20 TO 25 KT. SEAS TO
2.5 M. WITHIN 22N79W TO 22N80W TO 21N80W TO 20N79W TO 20N78W TO
21N78W TO 22N79W NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 17N85W TO 17N87W TO 17N88W TO 16N88W TO 16N87W
TO 16N85W TO 17N85W...INCLUDING THE GULF OF HONDURAS...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.GULF OF AMERICA WITHIN 22N90W TO 22N91W TO 21N92W TO 19N92W TO
19N91W TO 20N91W TO 22N90W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 20N91W TO 21N91W TO 20N92W TO 19N92W TO
19N91W TO 20N91W...INCLUDING WITHIN 60 NM OF COAST OF CAMPECHE...
N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 21N90W TO 21N91W TO 21N92W TO 20N92W
TO 20N91W TO 21N90W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE... NE WINDS 20 TO 25 KT. 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.
$$