HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC TUE AUG 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 11.
24 HOUR FORECAST VALID 1800 UTC AUG 12.
48 HOUR FORECAST VALID 1800 UTC AUG 13.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW 57N59W 999 MB NEARLY STATIONARY NEXT
18 HOURS THEN MOVING N 20 KT. WITHIN 300 NM E AND 420 NM SE
QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 59N57W 998 MB. WITHIN 300 NM N
SEMICIRCLE...AND 300 NM E AND W QUADRANTS...AND FROM 50N TO 58N
BETWEEN 45W AND 52W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 64N58W 996 MB. FRONT FROM 67N58W TO LOW TO
60N52W TO 57N48W. WITHIN 180 NM E OF FRONT FROM 66N TO 58N WINDS
25 TO 40 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE WITHIN 180 NM NW
QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M. ALSO WITHIN 300 NM E OF
FRONT WINDS 20 TO 30 KT. SEAS TO 3 M.
.SYNOPSIS AND FORECAST.
.LOW E OF AREA NEAR 56N25W 992 MB MOVING NE 20 KT. WITHIN 480 NM
NW AND 600 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.
.LOW 38N53W 1012 MB MOVING E 15 KT. WITHIN 240 NM S QUADRANT
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 38N43W 1014 MB. WITHIN 180 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.
.36 HOUR FORECAST LOW 42N37W 1018 MB. WITHIN 240 NM S AND SE
QUADRANTS WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW 42N55W 1009 MB. WITHIN 540 NM S AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 54N51W 1000 MB. WITHIN 480 NM E AND 600 NM
SE QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM W OF A LINE FROM
50N51W TO 60N56W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 63N BETWEEN 48W AND 60W.
.48 HOUR FORECAST DENSE FOG FROM 50N TO 60N BETWEEN 39W AND
53W...AND FROM 62N TO 67N BETWEEN 54W AND 60W.
.FORECASTER ROWLAND. 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 1200 UTC TUE AUG 11.
24 HOUR FORECAST VALID 1200 UTC WED AUG 12.
48 HOUR FORECAST VALID 1200 UTC THU AUG 13.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC 24 HOUR FORECAST WITHIN 10N35W TO 09N37W TO 08N37W TO
08N36W TO 07N35W TO 10N35W W WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.48 HOUR FORECAST WITHIN 18N35W TO 19N39W TO 17N43W TO 15N43W TO
08N38W TO 08N35W TO 18N35W NE TO E WINDS 20 TO 30 KT. SEAS 2.5
TO 3.0 M IN NE TO E SWELL.
.ATLC AND CARIBBEAN 12 HOUR FORECAST WITHIN 21N71W TO 21N73W TO
20N74W TO 19N74W TO 20N72W TO 20N71W TO 21N71W NE TO E WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.ATLC AND CARIBBEAN 48 HOUR FORECAST TROPICAL WAVE WITH LOW PRES
NEAR 10N36W 1010 MB. WITHIN 16N59W TO 17N63W TO 17N65W TO 15N65W
TO 14N63W TO 13N58W TO 16N59W...INCLUDING IN ATLC EXPOSURES AND
PASSAGES...E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.CARIBBEAN WITHIN 18N72W TO 18N78W TO 15N80W TO 10N79W TO 10N76W
TO 12N70W TO 18N72W...INCLUDING THE GULF OF VENEZUELA...E WINDS
20 TO 30 KT. SEAS 2.5 TO 3 M IN E SWELL.
.24 HOUR FORECAST WITHIN 13N70W TO 16N79W TO 15N80W TO 10N78W TO
12N74W TO 12N71W TO 13N70W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M IN E SWELL.
.48 HOUR FORECAST WITHIN 14N70W TO 16N72W TO 14N74W TO 13N76W TO
12N75W TO 12N70W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...
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 AGUIRRE/FIGURSKEY. NATIONAL HURRICANE CENTER.