HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI JUL 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 17.
24 HOUR FORECAST VALID 0000 UTC JUL 18.
48 HOUR FORECAST VALID 0000 UTC JUL 19.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW INLAND NEAR 53N60W 990 MB MOVING NE
15 KT THEN TURNING NW AFTER 12 HOURS. FRONT EXTENDS FROM 62N57W
TO 60N5W TO 57N46W TO 47N46W TO 42N50W TO 38N63W. WITHIN 120 NM
NE AND E OF FRONT N OF 58N WINDS 25 TO 40 KT. SEAS 3 TO 5 M.
ELSEWHERE BETWEEN 150 NM AND 480 NM N QUADRANT AND WITHIN 240 NM
NE AND E OF FRONT N OF 40N AND BETWEEN 360 NM AND 660 NM S
QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M...EXCEPT IN S
QUADRANT TO 2.5 M...HIGHEST N AND E OF FRONT N OF 48N. ELSEWHERE
N OF 53N W OF 43W AND WITHIN 300 NM E AND SE OF FRONT WINDS TO
25 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N62W 996 MB.
WITHIN 180 NM NE OF A LINE FROM 61N53W TO 58N45W WINDS 25 TO 35
KT. SEAS 2.5 TO 4 M. ELSEWHERE BETWEEN 180 NM AND 600 NM NE AND
E QUADRANTS AND FROM 48N TO 59N BETWEEN 38W AND 45W WINDS 20 TO
30 KT. SEAS TO 3 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 61N62W 1000 MB. N OF
A LINE FROM 58N43W TO 59N50W TO 63N56W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.5 M.
.SYNOPSIS AND FORECAST.
.LOW 40N44W 1016 MB MOVING NE 10 KT. WITHIN 180 NM S AND SE AND
120 NM NE QUADRANTS WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 41N40W 1018 MB. ASSOCIATED CONDITIONS
DIMINISHED.
.48 HOUR FORECAST INLAND LOW 48N71W 999 MB. W OF A LINE FROM
44N66W TO 31N75W ARE OF S TO SW WINDS TO 25 KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 51N
BETWEEN 45W AND 50W...W OF A LINE FROM 55N60W TO 64N64W...AND
FROM 58N TO 61N BETWEEN 43W AND 50W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 59N BETWEEN 44W AND
48W...N OF A LINE FROM 60N44W TO 64N35W...AND W OF A LINE FROM
57N61W TO 62N63W TO 66N58W.
.48 HOUR FORECAST DENSE FOG BETWEEN 62N AND A LINE FROM 51N38W
TO 61N52W...AND W OF A LINE FROM 57N61W TO 67N57W.
.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 0000 UTC FRI JUL 17.
24 HOUR FORECAST VALID 0000 UTC SAT JUL 18.
48 HOUR FORECAST VALID 0000 UTC SUN JUL 19.
.WARNINGS.
...CARIBBEAN GALE WARNING...
.WITHIN 12N74W TO 12N74.5W TO 12N75W TO 11N75W TO 11N74.5W TO
11.5N74W TO 12N74W NE TO E WINDS 30 TO 35 KT. SEAS 3.5 TO 4.0 M.
ELSEWHERE WITHIN 16N74W TO 16N78W TO 12N80W TO 10N76W TO 12N73W
TO 11N67W TO 16N74W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M IN E SWELL. REMAINDER OF
AREA WITHIN 14N70W TO 16N72W TO 17N77W TO 16N82W TO 11N84W TO
09N77W TO 14N70W...INCLUDING WITHIN 60 NM OF COAST OF
NICARAGUA...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN E SWELL.
.12 HOUR FORECAST WITHIN 17N74W TO 16N78W TO 12N80W TO 10N77W TO
12N73W TO 12N68W TO 17N74W...INCLUDING THE GULF OF VENEZUELA...
E WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M IN E SWELL. ELSEWHERE
WITHIN 14N69W TO 17N72W TO 16N82W TO 11N84W TO 10N76W TO 13N79W
TO 14N69W... INCLUDING WITHIN 60 NM OF COAST OF NICARAGUA...WINDS
20 KT OR LESS. SEAS 2.5 TO 4.0 M IN E SWELL.
.24 HOUR FORECAST WITHIN 13N74W TO 13N75W TO 12N75W TO 11N75W TO
11N74W TO 12N74W TO 13N74W NE TO E WINDS 30 TO 35 KT. SEAS 3.5
M. ELSEWHERE WITHIN 14N69W TO 17N73W TO 15N79W TO 12N78W TO
11N72W TO 12N67W TO 14N69W...INCLUDING THE GULF OF VENEZUELA...NE
TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. REMAINDER OF AREA
WITHIN 15N70W TO 18N76W TO 15N82W TO 11N83W TO 09N78W TO 13N78W
TO 15N70W...INCLUDING WITHIN 60 NM OF COAST OF NICARAGUA...WINDS
20 KT OR LESS. SEAS 2.5 TO 3.5 M IN E SWELL.
.33 HOUR FORECAST WITHIN 14N70W TO 17N73W TO 15N79W TO 13N80W TO
11N76W TO 11N70W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...
E WINDS 20 TO 30 KT. SEAS 3.0 TO 4.5 M. ELSEWHERE WITHIN 17N73W
TO 15N82W TO 09N81W TO 11N74W TO 13N77W TO 13N68W TO 17N73W...
INCLUDING WITHIN 60 NM OF COAST OF NICARAGUA...WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN E SWELL.
.48 HOUR FORECAST WITHIN 13N68W TO 16N74W TO 13N79W TO 11N78W TO
12N73W TO 11N67W TO 13N68W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN
17N72W TO 17N78W TO 15N82W TO 11N83W TO 10N81W TO 13N69W TO
17N72W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN E SWELL.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 20N71W TO 20.5N71.5W TO 20.5N72W TO 20N73.5W TO
19.5N74W
TO 20N71W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 20.5N71.5W TO 20N72W TO 20N74W TO
19.5N74W TO 20N72W TO 20N71W TO 20.5N71.5W E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 20.5N71W TO 21N71W TO 20.5N72W TO
20N72W TO 20N70.5W TO 20.5N71W E WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M.
.ATLC AND CARIBBEAN 30 HOUR FORECAST WITHIN 14N57W TO 14N60W TO
14N62W TO 13N62W TO 13N60W TO 13N57W TO 14N57W...INCLUDING
ATLANTIC EXPOSURES AND PASSAGES...NE TO E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST WITHIN 14N59W TO 13N59W TO 13N58W TO 14N59W
WINDS 20 KT OR LESS. SEAS 2.5 M IN E SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 16.5N87W TO 16.5N87.5W TO 16.5N88W TO 16N88W
TO 16N87.5W TO 16N86W TO 16.5N87W...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 22N88W TO 22N89W TO 21N91W TO 18N94W TO
18N93W TO 20N91W TO 22N88W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 22N88W TO 22N89W TO 21N91W TO 20N91W TO
21N91W TO 22N88W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE... NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 20N91W TO 21N91W TO 20N91W TO 20N92W 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.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.