HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT JUL 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 18.
24 HOUR FORECAST VALID 0000 UTC JUL 19.
48 HOUR FORECAST VALID 0000 UTC JUL 20.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW 56N55W 997 MB MOVING NW 15 KT. FROM
59N TO 63N BETWEEN 44W AND 53W WINDS 25 TO 40 KT. SEAS 3 TO 4.5
M. ELSEWHERE FROM 47N TO 59N BETWEEN 39W AND 46W AND N OF 53N
BETWEEN 46W AND 57W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 61N61W 1000 MB. FROM
59N TO 62N BETWEEN 43W AND 50W WINDS 25 TO 35 KT. SEAS 2.5 TO
3.5 M. ELSEWHERE FROM 52N TO 59N BETWEEN 36W AND 41W AND FROM
58N TO 64N BETWEEN 43W AND 58W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 63N62W 1005 MB. N OF 61N BETWEEN GREENLAND
AND 55W AREA OF SE WINDS TO 25 KT. SEAS TO 2.5 M.
...GALE WARNING...
.24 HOUR FORECAST W OF A LINE FROM 45N66W TO 39N68W TO 32N75W
AREA OF S TO SW WINDS TO 25 KT. SEAS TO 2.5 M.
.36 HOUR FORECAST INLAND LOW 48N66W 993 MB. FROM 44N TO 48N
BETWEEN 61W AND 65W AND FROM 37N TO 40N BETWEEN 67W AND 69W
WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 50N63W 988 MB. FROM 45N TO 52N BETWEEN 54W
AND 59W WINDS 25 TO 35 KT. SEAS TO 3.5 M... HIGHEST NEAR 46N57W.
ELSEWHERE FROM 44N TO 53N BETWEEN 51W AND 67W AND WITHIN 240 NM
E AND SE OF A FRONT FROM 44N59W TO 40N65W TO 35N77W WINDS 20 TO
30 KT. SEAS TO 3 M...EXCEPT E AND SE OF FRONT SEAS 2.5 TO 4
M...HIGHEST NEAR 38N67W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 59N
BETWEEN 42W AND 51W...FROM 56N TO 60N BETWEEN 35W AND 40W...N OF
A LINE FROM 59N42W TO 65N35W...FROM 56N TO 63N BETWEEN 51W AND
58W...AND N OF 57N W OF 58W.
.24 HOUR FORECAST DENSE FOG N OF A LINE FROM 48N37W TO
60N51W...FROM 58N TO 64N BETWEEN 52W AND 57W...AND NW AND N OF A
LINE FROM 58N61W TO 64N57W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 51N BETWEEN 56W AND
66W...FROM 51N TO 58N BETWEEN 35W AND 38W...N OF 60N E OF
GREENLAND...AND NW AND N OF A LINE FROM 58N60W TO 65N57W.
.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 SAT JUL 18.
24 HOUR FORECAST VALID 0000 UTC SUN JUL 19.
48 HOUR FORECAST VALID 0000 UTC MON JUL 20.
.WARNINGS.
...CARIBBEAN GALE WARNING...
.WITHIN 12N73W TO 12N74W TO 12N75W TO 11N75W TO 12N74W TO 12N73W
NE TO E WINDS 30 TO 35 KT. SEAS 3.0 TO 3.5 M. ELSEWHERE WITHIN
16N74W TO 14N78W TO 13N79W TO 11N76W TO 11N71W TO 12N69W TO
16N74W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO
30 KT. SEAS 2.5 TO 3.5 M. REMAINDER OF AREA WITHIN 15N71W TO
18N75W TO 15N82W TO 11N83W TO 10N76W TO 13N78W TO 15N71W...
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 17N72W TO 15N78W TO 12N79W TO 11N76W TO
12N73W TO 13N70W TO 17N72W...INCLUDING THE GULF OF VENEZUELA...
E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M IN E SWELL. ELSEWHERE
WITHIN 16N71W TO 17N74W TO 17N79W TO 11N84W TO 09N78W TO 13N69W
TO 16N71W...INCLUDING WITHIN 60 NM OF COAST OF NICARAGUA...WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST WITHIN 12N74W TO 12N74.5W TO 11.5N75W TO
11N74.5W TO 11.5N74W TO 12N74W NE TO E WINDS 30 TO 35 KT. SEAS
3.0 TO 3.5 M. ELSEWHERE WITHIN 13N70W TO 15N75W TO 14N77W TO
12N77W TO 11N75W TO 11N70W TO 13N70W...INCLUDING THE GULF OF
VENEZUELA... NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
REMAINDER OR AREA WITHIN 16N71W TO 17N77W TO 11N83W TO 09N78W TO
14N77W TO 13N69W TO 16N71W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M
IN E SWELL.
.33 HOUR FORECAST WITHIN 15N71W TO 15N74W TO 14N77W TO 11N78W TO
13N70W TO 15N71W...INCLUDING THE GULF OF VENEZUELA... NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M. ELSEWHERE WITHIN 17N72W TO
17N79W TO 11N83W TO 10N81W TO 10N76W TO 13N68W TO 17N72W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.5 M IN E SWELL.
.48 HOUR FORECAST WITHIN 14N71W TO 13N74W TO 15N75W TO 12N78W TO
11N76W TO 11N70W TO 14N71W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN
16N72W TO 16N77W TO 15N81W TO 12N82W TO 10N80W TO 12N73W TO
16N72W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.SYNOPSIS AND FORECAST.
.ATLANTIC AND CARIBBEAN 06 HOUR FORECAST WITHIN 17N62W TO 16N62W
TO 17N63W TO 15N62W TO 14N62W TO 14N61W TO 17N62W E WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M. WITHIN 13N57W TO 13N59W TO 12N56W TO
13N57W WINDS 20 KT OR LESS. SEAS 2.5 M IN E SWELL.
.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 STRIPLING. NATIONAL HURRICANE CENTER.