HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1800 UTC APR 20.
24 HOUR FORECAST VALID 1800 UTC APR 21.
48 HOUR FORECAST VALID 1800 UTC APR 22.
.WARNINGS.
...STORM WARNING...
.LOW 59N59W 997 MB MOVING NE 20 KT. N OF 57N BETWEEN 46W AND 57W
WINDS 40 TO 55 KT. SEAS 4 TO 8 M. ELSEWHERE N OF A LINE FROM
57N41W TO 54N52W TO 57N58W TO 61N60W WINDS 25 TO 40 KT. SEAS 2.5
TO 5 M.
.24 HOUR FORECAST LOW DISSIPATED. N OF A LINE FROM 59N44W TO
55N48W TO 63N56W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST NEW LOW TO FORM 58N55W 1022 MB. N OF A LINE
FROM 59N45W TO 57N49W TO 63N52W WINDS 20 TO 30 KT. SEAS TO 3 M.
...GALE WARNING...
.LOW 50N56W 1006 MB MOVING NE 35 KT. WITHIN 360 NM W QUADRANT
WINDS 25 TO 35 KT. SEAS TO 3 M. ELSEWHERE FROM 45N TO 51N BETWEEN
49W AND 67W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED ABOVE WITH
AREA SW OF GREENLAND.
...GALE WARNING...
.FRONT EXTENDS FROM 45N56W TO 40N59W TO 31N68W WINDS 20 TO 30 KT.
SEAS TO 3.5 M.
.18 HOUR FORECAST NEW LOW 37N59W 1009 MB. WITHIN 300 NM W OF A
FRONT TO EXTEND FROM 45N52W TO 40N55W TO THE LOW TO 31N63W WINDS
25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 38N57W 1006 MB. FROM 35N TO 42N BETWEEN 55W
AND 62W WINDS 25 TO 40 KT. SEAS TO 4 M. ELSEWHERE FROM 31N TO 38N
BETWEEN 55W AND 71W...AND WITHIN 360 NM W OF A FRONT TO EXTEND
FROM 46N51W TO 41N53W TO THE LOW WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 47N53W 1005 MB.
WITHIN 360 NM NW QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M.
ELSEWHERE FROM 45N TO 56N BETWEEN 47W AND 59W...AND FROM 31N TO
45N BETWEEN 51W AND 59W WINDS 20 TO 30 KT. SEAS TO 4 M.
...GALE WARNING...
.FROM 40N TO 49N BETWEEN 35W AND 40W AREA OF NW WINDS 25 TO 35
KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST E OF A LINE FROM 34N35W TO 41N43W TO 51N35W
WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST FROM 37N TO 55N BETWEEN 35W AND 39W WINDS 25 TO
35 KT. SEAS 2.5 TO 5 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 59N
BETWEEN 47W AND 57W...AND N OF 59N W OF 54W.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 59N BETWEEN 46W AND
52W...AND N OF 59N BETWEEN 51W AND 58W.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 56N BETWEEN 48W AND
59W...AND N OF 56N BETWEEN 50W AND 54W.
.LIGHT FREEZING SPRAY FROM 48N TO 50N W OF 60W...AND FROM 61N TO
63N W OF 58W.
.24 HOUR FORECAST LIGHT FREEZING SPRAY W AND NW OF A LINE FROM
46N58W TO 48N51W TO 56N52W TO 65N56W.
.48 HOUR FORECAST LIGHT FREEZING SPRAY W AND NW OF A LINE FROM
46N59W TO 50N53W TO 63N51W.
.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 1800 UTC MON APR 20.
24 HOUR FORECAST VALID 1800 UTC TUE APR 21.
48 HOUR FORECAST VALID 1800 UTC WED APR 22.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC COLD FRONT FROM 31N69W TO 27.5N75W TO BEYOND 26.5N80W.
WITHIN
31N71W TO 30N75W TO 31N76W TO 29N79W TO 29N75W TO 30N72W TO
31N71W N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M IN N SWELL.
ELSEWHERE WITHIN 31N71W TO 30N77W TO 31N80W TO 29N80W TO 29N75W
TO 31N71W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.24 HOUR FORECAST WITHIN 31N61W TO 31N67W TO 27N73W TO 24N80W TO
24N75W TO 26N68W TO 31N61W...INCLUDING ATLANTIC EXPOSURES... N
TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M IN NW TO N SWELL.
WITHIN 31N59W TO 31N60W TO 30N61W TO 30N60W TO 30N59W TO 31N59W
SW WINDS 20 TO 25 KT. SEAS TO 2.5 M IN MIXED SWELL. ELSEWHERE
WITHIN 29N70W TO 31N70W TO 28N80W TO 25N80W TO 24N72W TO 26N68W
TO 29N70W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 31N57W TO 31N58W TO 31N57.5W TO 31N57W
N WINDS 20 TO 25 KT. SEAS 3.0 TO 3.5 M IN NW TO N SWELL.
ELSEWHERE WITHIN 31N55W TO 27N65W TO 26N76W TO 22N74W TO 21N69W
TO 23N62W TO 31N55W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.ATLC WITHIN 31N35W TO 31N40W TO 30N38W TO 29N35W TO 31N35W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.24 HOUR FORECAST WITHIN 31N35W TO 31N41W TO 27N43W TO 25N39W TO
25N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
SWELL.
.48 HOUR FORECAST WITHIN 31N35W TO 31N37W TO 30N36W TO 30N35W TO
31N35W WINDS 20 KT OR LESS. SEAS 2.5 M IN N SWELL.
.GULF OF AMERICA WITHIN 28N96W TO 28.5N96.5W TO 27.5N97W TO
26.5N96.5W TO 26.5N96W TO 28N96W E WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M. WITHIN 28N85W TO 28N86W TO 29N88W TO 27N89W TO
26N88W TO 26N86W TO 28N85W WINDS 20 KT OR LESS. SEAS 2.5 M IN NE
SWELL.
.24 HOUR FORECAST WITHIN 25N80W TO 25N84W TO 26N87W TO 25N87W TO
24N85W TO 24N80W TO 25N80W NE TO E WINDS 20 TO 25 KT. SEAS TO
2.5 M. ELSEWHERE WITHIN 27N87W TO 27N88W TO 26N89W TO 25N88W TO
24N85W TO 24N84W TO 27N87W WINDS 20 KT OR LESS. SEAS 2.5 M IN NE
TO E SWELL.
.48 HOUR FORECAST WITHIN 27N87W TO 27N88W TO 26N88W TO 24N86W TO
24N85W TO 25N86W TO 27N87W WINDS 20 KT OR LESS. SEAS 2.5 M IN E
TO SE SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.
$$