HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC MON MAY 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAY 18.
24 HOUR FORECAST VALID 0000 UTC MAY 19.
48 HOUR FORECAST VALID 0000 UTC MAY 20.
.WARNINGS.
...GALE WARNING...
.LOW JUST E OF AREA NEAR 54N32W 983 MB MOVING E 15 KT. FROM 42N
TO 58N E OF 41W...EXCEPT WITHIN 180 NM OF CENTER...WINDS 30 TO 40
KT. SEAS 3 TO 7.5 M...HIGHEST NEAR 46N36W. ELSEWHERE FROM 38N TO
59N E OF 50W WINDS TO 25 KT. SEAS 2.5 TO 5 M...HIGHEST SW OF
CENTER.
.24 HOUR FORECAST COMPLEX LOW E OF AREA WITH MEAN CENTER NEAR
55N21W 986 MB. FROM 50N TO 61N E OF 48W WINDS 20 TO 30 KT. SEAS
TO 3.5 M.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MERGED WITH LOW
45N31W DESCRIBED BELOW.
...GALE WARNING...
.12 HOUR FORECAST FROM 57N TO 62N BETWEEN 40W AND 47W WINDS 25 TO
35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED AND MERGED WITH LOW
55N21W DESCRIBED ABOVE.
...GALE WARNING...
.LOW 52N56W 996 MB MOVING SE 25 KT. FROM 37N TO 52N BETWEEN 50W
AND 65W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 48N40W 999 MB. FROM 33N TO 50N E OF 58W
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA NEAR
45N31W 987 MB. FROM 35N TO 54N E OF 51W WINDS 20 TO 30 KT. SEAS
2.5 TO 4.5 M...HIGHEST SW OF CENTER.
.SYNOPSIS AND FORECAST.
.LOW 57N59W 995 MB DRIFTING N 05 KT. FROM 57N TO 62N W OF 53W
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 61N62W 999 MB. FROM 56N TO 64N W OF 52W
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 61N63W 1000 MB. WITHIN 180 NM E SEMICIRCLE
WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW WELL INLAND NEAR 51N76W 997 MB. FROM 37N TO
44N W OF 57W WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 46N TO 53N
BETWEEN 49W AND 55W...AND FROM 60N TO 62N W OF 55W.
.24 HOUR FORECAST DENSE FOG FROM 58N TO 64N W OF 57W...AND FROM
47N TO 50N BETWEEN 50W AND 54W.
.48 HOUR FORECAST DENSE FOG WITHIN 90 NM NE OF A LINE FROM 53N48W
TO 60N53W...AND FROM 41N TO 46N BETWEEN 59W AND 67W.
.FORECASTER POCHE. 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 MON MAY 18.
24 HOUR FORECAST VALID 0000 UTC TUE MAY 19.
48 HOUR FORECAST VALID 0000 UTC WED MAY 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 18N37W TO 21N44W TO 19N60W TO 14N60W TO 07N53W TO
09N37W TO 18N37W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E
SWELL.
.24 HOUR FORECAST WITHIN 18N48W TO 19N60W TO 14N59W TO 12N55W TO
08N53W TO 07N41W TO 18N48W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E
SWELL.
.48 HOUR FORECAST WITHIN 11N47W TO 10N53W TO 12N60W TO 09N56W TO
07N52W TO 09N48W TO 11N47W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NE TO E SWELL.
.ATLC 21 HOUR FORECAST WITHIN 21N70W TO 21N71W TO 21N72W TO
20N73W TO 20N72W TO 20N70W TO 21N70W E WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.CARIBBEAN WITHIN 16N73W TO 16N77W TO 13N80W TO 11N79W TO 12N75W
TO 13N70W TO 16N73W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M.
.24 HOUR FORECAST WITHIN 14N72W TO 16N77W TO 15N80W TO 13N82W TO
11N80W TO 11N75W TO 14N72W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M.
.48 HOUR FORECAST WITHIN 14N72W TO 15N73W TO 15N79W TO 12N81W TO
11N78W TO 11N75W TO 14N72W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M.
.CARIBBEAN WITHIN 17N87W TO 16N88W TO 16N86W TO 16N85W TO
17N87W...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 17N86W TO 17N87W TO 16N87W TO 16N85W TO
17N86W...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.GULF OF AMERICA WITHIN 23N89W TO 22N90W TO 22N89W TO 21N89W TO
22N88W TO 23N89W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 22N88W TO 23N90W TO 23N91W TO 22N90W TO
21N89W TO 22N88W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 22N88W TO 22N89W TO 22N90W TO 21N90W TO
21N91W TO 22N89W TO 22N88W E 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 KONARIK. NATIONAL HURRICANE CENTER.
$$