HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MAY 18.
24 HOUR FORECAST VALID 0600 UTC MAY 19.
48 HOUR FORECAST VALID 0600 UTC MAY 20.
.WARNINGS.
...GALE WARNING...
.LOW E OF AREA NEAR 54N32W 982 MB MOVING E 20 KT. FROM 41N TO 59N
E OF 42W...EXCEPT WITHIN 180 NM OF CENTER...WINDS 25 TO 40 KT.
SEAS 3 TO 7 M...HIGHEST NEAR 46N35W. ELSEWHERE FROM 37N TO 59N E
OF 48W WINDS TO 25 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW E OF AREA WITH MAIN CENTER NEAR
55N17W. FROM 50N TO 61N E OF 47W WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW MOVED WELL E OF AREA AND CONDITIONS MERGED
WITH LOW 46N30W DESCRIBED BELOW.
...GALE WARNING...
.06 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
55N17W DESCRIBED ABOVE.
...GALE WARNING...
.LOW 51N53W 997 MB MOVING SE 30 KT. FROM 38N TO 54N BETWEEN 48W
AND 66W WINDS 20 TO 30 KT. SEAS TO 3 M.
.18 HOUR FORECAST LOW 48N40W 999 MB. FROM 33N TO 50N E OF 58W
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 44N38W 996 MB. WITHIN 540 NM S AND 600 NM W
QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE. FROM 34N
TO 50N E OF 55W WINDS TO 25 KT. SEAS TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA NEAR
46N30W 984 MB. FROM 31N TO 60N E OF 50W WINDS 20 TO 30 KT. SEAS
2.5 TO 4.5 M...HIGHEST SW OF CENTER.
.SYNOPSIS AND FORECAST.
.LOW 57N58W 996 MB DRIFTING N 05 KT. WITHIN 240 NM NE SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 61N60W 999 MB WITHIN 180 NM OF CENTER WINDS
20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.48 HOUR FORECAST LOW WELL INLAND NEAR 53N76W 997 MB. FROM 37N TO
45N W OF 52W WINDS TO 25 KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 52N
BETWEEN 45W AND 56W.
.24 HOUR FORECAST DENSE FOG FROM 39N TO 42N BETWEEN 68W AND
71W...AND FROM 56N TO 63N W OF 54W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 46N BETWEEN 54W AND
65W...AND WITHIN 120 NM NE OF A LINE FROM 56N50W TO 60N54W.
.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 0600 UTC MON MAY 18.
24 HOUR FORECAST VALID 0600 UTC TUE MAY 19.
48 HOUR FORECAST VALID 0600 UTC WED MAY 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 17N38W TO 20N44W TO 20N56W TO 14N61W TO 07N52W TO
09N37W TO 17N38W...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 18N50W TO 19N62W TO 14N60W TO 09N56W TO
07N42W TO 11N42W TO 18N50W...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 10N47W TO 09N53W TO 12N59W TO 09N56W TO
08N53W TO 08N50W TO 10N47W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NE TO E SWELL.
.ATLC 15 HOUR FORECAST WITHIN 21N71W TO 21N72W TO 20N72W TO
20N70W TO 21N71W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE.
.CARIBBEAN WITHIN 14N71W TO 16N74W TO 16N77W TO 13N79W TO 12N78W
TO 11N71W TO 14N71W...INCLUDING THE GULF OF VENEZUELA...E WINDS
20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 15N73W TO 16N77W TO 15N80W TO 11N81W TO
11N75W TO 13N71W TO 15N73W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M.
.48 HOUR FORECAST WITHIN 15N73W TO 15N76W TO 13N80W TO 12N80W TO
11N76W TO 13N71W TO 15N73W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M.
.CARIBBEAN WITHIN 17N86W TO 17N87W TO 17N88W TO 16N88W TO 16N85W
TO 17N86W...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.GULF OF AMERICA WITHIN 22N89W TO 24N90W TO 24N92W TO 22N91W TO
22N93W TO 20N92W TO 22N89W SE WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.
$$