HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC TUE MAY 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19.
24 HOUR FORECAST VALID 0000 UTC MAY 20.
48 HOUR FORECAST VALID 0000 UTC MAY 21.
.WARNINGS.
...GALE WARNING...
.LOW 43N41W 1000 MB MOVING NE 20 KT. FROM 33N TO 50N E OF 58W
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.06 HOUR FORECAST LOW 43N38W 996 MB. WITHIN 480 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.
.24 HOUR FORECAST LOW JUST E OF AREA NEAR 45N31W 988 MB. FROM 32N
TO 49N E OF 50W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA NEAR
52N27W 985 MB. FROM 58N TO 61N BETWEEN 42W AND 51W WINDS 25 TO 35
KT. SEAS 3 TO 4 M. ELSEWHERE FROM 36N TO 62N E OF A LINE FROM
36N39W TO 62N54W WINDS TO 25 KT. SEAS TO 4 M.
...GALE WARNING...
.LOW 55N34W 990 MB MOVING SW 10 KT. FROM 50N TO 61N E OF 48W
WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 52N39W 993 MB. FROM 49N TO 59N E OF 52W
WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.42 HOUR FORECAST LOW 53N42W 996 MB. WITHIN 180 NM SW
SEMICIRCLE...AND FROM 58N TO 60N BETWEEN 42W AND 50W WINDS 25 TO
35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS MERGED WITH LOW
52N27W DESCRIBED ABOVE.
.SYNOPSIS AND FORECAST.
.LOW 60N58W 1004 MB DRIFTING W 05 KT. FROM 57N TO 62N W OF 55W
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.24 HOUR FORECAST LOW WELL INLAND NEAR 50N78W 1000 MB. FROM 38N
TO 45N W OF 56W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW INLAND NEAR 54N63W 988 MB. FROM 35N TO 58N
W OF A LINE FROM 35N41W TO 58N55W...INCLUDING WITHIN THE GULF OF
SAINT LAWRENCE...WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 57N TO 64N W OF
57W...AND FROM 47N TO 50N BETWEEN 50W AND 54W.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM NE OF A LINE FROM 53N48W
TO 60N53W...AND FROM 41N TO 46N BETWEEN 59W AND 67W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 49N BETWEEN 50W AND
62W...AND WITHIN 90 NM NE OF A LINE FROM 59N53W TO 61N55W TO
62N61W.
.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 TUE MAY 19.
24 HOUR FORECAST VALID 0000 UTC WED MAY 20.
48 HOUR FORECAST VALID 0000 UTC THU MAY 21.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 20N71W TO 21N71W TO 21N72W TO 20N73W TO 20N72W TO
20N71W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE.
.ATLC WITHIN 12N47W TO 18N50W TO 15N53W TO 08N53W TO 07N47W TO
09N41W TO 12N47W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO
E SWELL.
.24 HOUR FORECAST WITHIN 10N55W TO 10N56W TO 09N56W TO 08N53W TO
08N52W TO 09N52W TO 10N55W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NE TO E SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE.
.ATLC 30 HOUR FORECAST WITHIN 31N35W TO 31N44W TO 30N41W TO
30N37W TO 30N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NW TO N SWELL.
.48 HOUR FORECAST WITHIN 31N35W TO 31N41W TO 30N40W TO 30N38W TO
29N37W TO 29N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NW TO N SWELL.
.CARIBBEAN WITHIN 13N71W TO 16N77W TO 15N80W TO 12N80W TO 11N75W
TO 11N70W TO 13N71W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 13N70W TO 15N72W TO 14N79W TO 11N80W TO
12N76W TO 11N71W TO 13N70W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 13N69W TO 14N72W TO 13N74W TO 13N79W TO
11N77W TO 11N71W TO 13N69W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.CARIBBEAN WITHIN 17N85W TO 17N86W TO 17N87W TO 16N87W TO 16N85W
TO 17N85W...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST CONDITIONS IMPROVE.
.GULF OF AMERICA WITHIN 23N89W TO 24N91W TO 22N91W TO 21N90W TO
22N90W TO 22N88W TO 23N89W E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST WITHIN 22N89W TO 23N90W TO 22N90W TO 21N90W TO
22N88W TO 22N89W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.33 HOUR FORECAST CONDITIONS IMPROVE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.
$$