HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 19.
24 HOUR FORECAST VALID 1800 UTC AUG 20.
48 HOUR FORECAST VALID 1800 UTC AUG 21.
.WARNINGS.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 58N60W 996 MB. BETWEEN 120 NM AND 480
NM E AND BETWEEN 60 NM AND 300 NM NE QUADRANTS WINDS 20 TO 30
KT. SEAS TO 3.5 M.
.36 HOUR FORECAST LOW 61N61W 991 MB. N OF A LINE FROM 62N63W TO
63N60W AND WITHIN 90 NM W OF GREENLAND FROM 61N TO 64N WINDS 25
TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 61N62W 990 MB. WITHIN 180 NM NW QUADRANT
AND W OF A LINE FROM 63N63W TO 66N59W WINDS 25 TO 40 KT. SEAS
2.5 TO 4 M. ELSEWHERE N OF 61N W OF 58W AND FROM 55N TO 59N W OF
58W WINDS 20 TO 30 KT. SEAS TO 3 M.
...GALE WARNING...
.24 HOUR FORECAST FROM 59N TO 62N BETWEEN 38W AND 43W AREA OF SW
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.36 HOUR FORECAST NEW LOW 63N41W 1006 MB. WITHIN 180 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW 65N35W 1004 MB. BETWEEN 120 NM AND 480 NM
S AND SE QUADRANTS AND FROM 49N TO 58N BETWEEN 39W AND 46W WINDS
20 TO 30 KT. SEAS TO 3.5 M...HIGHEST NEAR 62N35W.
.SYNOPSIS AND FORECAST.
.LOW 46N63W 1007 MB MOVING NE 15 KT. FROM 39N TO 51N BETWEEN 56W
AND 62W S TO SE WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS MERGED WITH NEW
LOW 58N60W IN WARNINGS SECTION.
.COMPLEX LOW WITH MAIN CENTER 43N47W 1014 MB MOVING NE 15 KT.
WITHIN 300 NM E AND SE AND 180 NM S QUADRANTS WINDS TO 25 KT.
SEAS TO 3 M...HIGHEST SE QUADRANT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 47N40W 1017 MB.
FROM 44N TO 50N BETWEEN 35W AND 43W WINDS LESS THAN 25 KT. SEAS
TO 2.5 M.
.48 HOUR FORECAST LOW MOVED E OF AREA. FROM 46N TO 50N E OF 39W
WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.FROM 55N TO 62N BETWEEN 37W AND 44W AREA OF S TO SW WINDS LESS
THAN 25 KT. SEAS TO 2.5 M.
.12 HOUR FORECAST CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 45N
BETWEEN 62W AND 70W...WITHIN THE GULF OF SAINT LAWRENCE N OF 47N
W OF 61W...FROM 45N TO 49N BETWEEN 43W AND 49W...WITHIN 360 NM
SW OF A LINE FROM 61N37W TO 63N50W TO 66N53W...AND FROM 56N TO
64N W OF 58W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 45N BETWEEN 65W AND
70W...FROM 45N TO 52N BETWEEN 54N AND 61W...FROM 48N TO 53N
BETWEEN 48W AND 52W...FROM 57N TO 63N BETWEEN 38W AND
47W...WITHIN 180 NM S AND SW OF A LINE FROM 61N45W TO
63N52W...AND N OF 55N W OF 57W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 44N BETWEEN 66W AND
69W...FROM 44N TO 48N BETWEEN 53W AND 59W...FROM 44N TO 53N
BETWEEN 47W AND 53W...AND WITHIN 240 NM SW OF A LINE FROM 60N43W
TO 65N51W.
.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 1800 UTC WED AUG 19.
24 HOUR FORECAST VALID 1800 UTC THU AUG 20.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 21.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.CARIBBEAN WITHIN 13N69W TO 14N71W TO 13N73W TO 12N74W TO 12N72W
TO 11N69W TO 13N69W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.06 HOUR FORECAST LITTLE CHANGE...EXCEPT NE TO E WINDS 25 TO 30
KT S OF 13N INCLUDING THE GULF OF VENEZUELA.
.24 HOUR FORECAST WITHIN 15N73W TO 15N74W TO 13N75W TO 12N72W TO
11N70W TO 13N69W TO 15N73W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M OUTSIDE THE GULF OF
VENEZUELA. WITHIN 13N75W TO 14N77W TO 13N78W TO 12N78W TO 11N77W
TO 11N76W TO 13N75W WINDS 20 KT OR LESS. SEAS TO 2.5 M IN E
SWELL.
.48 HOUR FORECAST WITHIN 14N70W TO 16N73W TO 16N74W TO 14N75W TO
11N71W TO 12N69W TO 14N70W NE TO E WINDS 20 TO 25 KT...EXCEPT 25
TO 30 KT S OF 13N INCLUDING THE GULF OF VENEZUELA. SEAS 2.5 M
OUTSIDE THE GULF OF VENEZUELA. WITHIN 13N76W TO 13N77W TO 13N78W
TO 12N77W TO 11N77W TO 11N76W TO 13N76W WINDS 20 KT OR LESS. SEAS
2.5 M IN NE TO E SWELL.
.GULF OF AMERICA 06 HOUR FORECAST WITHIN 21N91W TO 20N92W TO
19N91W TO 20N91W TO 21N91W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 22N90W TO 22N91W TO 21N91W TO 21N92W TO
20N92W TO 20N91W TO 22N90W...INCLUDING WITHIN 60 NM OF COAST OF
CAMPECHE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST 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 AGUIRRE. NATIONAL HURRICANE CENTER.