HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT OCT 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
ATLANTIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 4 METERS OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH, AND
ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER CONDITIONS
WILL BE INCLUDED FOR WARNING CONDITIONS AND TO PRESERVE
CONTINUITY WHERE APPROPRIATE.
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1800 UTC OCT 17.
24 HOUR FORECAST VALID 1800 UTC OCT 18.
48 HOUR FORECAST VALID 1800 UTC OCT 19.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 63N41W 971 MB MOVING NE 10 KT.
WITHIN 180 NM S OF A LINE FROM 60N35W TO 60N43W WINDS 40 TO 55
KT. SEAS 5.5 TO 10 M...HIGHEST NEAR 58N38W. ELSEWHERE FROM 54N TO
60N E OF 50W AND N OF 60N E OF GREENLAND WINDS 25 TO 40 KT. SEAS
4 TO 8 M.
.24 HOUR FORECAST COMBINED LOW 65N36W 970 MB. WITHIN 180 NM S AND
SE OF A LINE FROM 60N44W TO 62N35W WINDS 40 TO 55 KT. SEAS 4.5 TO
8.5 M...HIGHEST NEAR 61N35W. ELSEWHERE FROM 53N TO 60N E OF 50W
AND N OF 62N E OF GREENLAND WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
ALSO FROM 60N TO 65N W OF GREENLAND WINDS 20 TO 30 KT. SEAS 2.5
TO 4 M...HIGHEST NEAR 60N50W.
.48 HOUR FORECAST LOW 65N35W 978 MB. FROM 54N TO 60N E OF 45W
WINDS 35 TO 50 KT. SEAS 4 TO 8 M...HIGHEST NEAR 59N39W. ELSEWHERE
FROM 50N TO 60N E OF 50W AND N OF 60N E OF GREENLAND WINDS 25 TO
35 KT. SEAS 3.5 TO 6 M. ALSO FROM 50N TO 60N W OF 50W WINDS 20 TO
30 KT. SEAS 2.5 TO 4.5 M IN MIXED SWELL...HIGHEST NEAR 50W.
...STORM WARNING...
.LOW NEAR 52N54W 985 MB MOVING NE 35 KT. WITHIN 420 NM E...480 NM
SE AND 240 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 3.5 TO 6
M...HIGHEST NEAR 52N44W. ELSEWHERE WITHIN 660 NM E...600 NM SE
AND 780 NM SW...INCLUDING THE GULF OF SAINT LAWRENCE WINDS 25 TO
40 KT. SEAS 3.5 TO 5 M...EXCEPT TO 3.5 M IN THE GULF OF SAINT
LAWRENCE.
.12 HOUR FORECAST LOW 59N39W 982 MB. FROM 45N TO 58N AND N AND NE
OF A LINE FROM 61N40W TO 64N35W WINDS 35 TO 50 KT. SEAS 5 TO 10
M...HIGHEST NEAR 63N35W.
.24 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED ABOVE
WITH LOW 65N36W.
...STORM WARNING...
.COMPLEX LOW WITH MAIN LOW 35N71W 1010 MB MOVING SE 10 KT. W AND
NW OF A LINE FROM 32N78W TO 39N66W WINDS 30 TO 40 KT. SEAS 3 TO
4.5 M. ELSEWHERE W AND NW OF A LINE FROM 31N75W TO 40N63W TO
44N63W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M IN MIXED SWELL.
.12 HOUR FORECAST LOW 34N72W 1010 MB. WITHIN 300 NM W AND NW OF A
LINE FROM 32N74W TO THE LOW TO 37N65W WINDS 35 TO 50 KT. SEAS 4.5
TO 7 M...HIGHEST NEAR 34N75W.
.24 HOUR FORECAST LOW 32N70W 1010 MB. WITHIN 360 NM W...300 NM
NW AND 540 NM NE QUADRANTS WINDS 35 TO 50 KT. SEAS 4.5 TO 7.5
M...HIGHEST NEAR 34N72W. ELSEWHERE WITHIN 1140 NM NE...600 NM SW
AND 480 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3.5 TO 6 M. ALSO
WITHIN 240 NM N OF A LINE FROM 45N43W TO 48N35W WINDS 20 TO 30
KT. SEAS 3 TO 5.5 M IN MIXED SWELL...HIGHEST NEAR 35W.
.48 HOUR FORECAST LOW 34N72W 1007 MB. WITHIN 300 NM W...360 NM NW
AND BETWEEN 180 NM AND 480 NM NE QUADRANTS WINDS 30 TO 45 KT.
SEAS 4 TO 8 M...HIGHEST NEAR 37N73W. ELSEWHERE FROM 31N TO 43N W
OF 60W AND WITHIN 180 NM NW AND N OF A LINE FROM 38N60W TO 42N35W
WINDS 20 TO 30 KT. SEAS 3 TO 5.5 M IN MIXED SWELL.
...GALE WARNING...
.N OF 63N W OF GREENLAND AREA OF NW TO N WINDS 25 TO 40 KT. SEAS
4 TO 6 M. ELSEWHERE N OF 60N W OF GREENLAND AREA NW TO N WINDS 20
TO 30 KT. SEAS 3 TO 4.5 M IN MIXED SWELL.
.24 HOUR FORECAST CONDITIONS ABSORBED AND DESCRIBED ABOVE WITH
LOW 65N36W.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM NW OF A
LINE FROM 44N55W TO 52N49W...FROM 52N TO 55N W OF 43W TO THE
COAST OF LABRADOR AND W OF A LINE FROM 54N54W TO 63N61W.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM NW AND N OF A LINE FROM
55N59W TO 55N46W AND N OF 64N E OF GREENLAND.
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 55N51W TO 60N60W TO
THE COAST OF LABRADOR...N OF 63N E OF GREENLAND AND N OF 64N W OF
GREENLAND.
.24 HOUR FORECAST LIGHT FREEZING SPRAY FROM 62N TO 67N W OF 60W.
.48 HOUR FORECAST LIGHT FREEZING SPRAY W AND NW OF A LINE FROM
61N64W TO 67N58W AND WITHIN 60 NM W OF GREENLAND N OF 64N.
.FORECASTER FUTTERMAN. 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 SAT OCT 17.
24 HOUR FORECAST VALID 1800 UTC SUN OCT 18.
48 HOUR FORECAST VALID 1800 UTC MON OCT 19.
.WARNINGS.
...GULF OF AMERICA STORM WARNING...
.COLD FRONT FROM 27N82.5W TO 21N94.5W THEN STATIONARY TO 18N93W.
WITHIN 21N96W TO 20N97W TO 19N96W TO 18N94W TO 19N94W TO 21N96W
...INCLUDING WITHIN 60 NM OF COAST OF VERACRUZ...NW WINDS 40 TO
50 KT. SEAS 5.5 TO 7.5 M. ELSEWHERE WITHIN 24N94W TO 26N97W TO
23N98W TO 18N94W TO 21N95W TO 24N94W NW TO N WINDS 30 TO 40 KT.
SEAS 3.5 TO 5.5 M. REMAINDER OF AREA WITHIN 29N83W TO 31N88W TO
30N95W TO 26N97W TO 21N95W TO 27N83W TO 29N83W N TO NE WINDS 20
TO 30 KT WITH FREQUENT GUSTS TO GALE FORCE. SEAS 2.5 TO 4.0 M.
.06 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW STORM FORCE
...AND FEQUENT GUSTS TO GALE FORCE DIMINISHING.
.24 HOUR FORECAST COLD FRONT STALLING FROM 24.5N80.5W TO 20N93W
TO 18N93W. WITHIN 21N95W TO 21N97W TO 19N96W TO 18N95W TO
18N94W TO 21N95W...INCLUDING WITHIN 60 NM OF COAST OF VERACRUZ...
NW TO N WINDS 30 TO 45 KT. SEAS 4.5 TO 6.0 M. ELSEWHERE WITHIN
25N81W TO 30N84W TO 30N90W TO 25N97W TO 21N97W TO 19N92W TO
25N81W...INCLUDING THE STRAITS OF FLORIDA AND WITHIN 60 NM OF
COAST OF CAMPECHE...NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M IN
NE SWELL.
.42 HOUR FORECAST STATIONARY FRONT FROM 84N80.5W TO 22N93W TO
18N93.5W. WITHIN 21N95W TO 21N96W TO 20N97W TO 19N96W TO 18N95W
TO 19N93W TO 21N95W...INCLUDING WITHIN 60 NM OF COAST OF
VERACRUZ...NW TO N WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M. WITHIN
30N84W TO 29N87W TO 24N88W TO 23N86W TO 25N81W TO 30N84W...
INCLUDING THE STRAITS OF FLORIDA...NE TO E WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 28N87W TO 28N92W TO 21N96W
TO 19N93W TO 21N91W TO 23N86W TO 28N87W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
...ATLC GALE WARNING...
.COLD FRONT FROM 31N77W TO 28N80.5W. WITHIN 30N79W TO 31N79W TO
31N81W TO 30N82W TO 29N81W TO 29N79W TO 30N79W NW TO N WINDS 20
TO 30 KT. SEAS LESS THAN 2.5 M.
.06 HOUR FORECAST LITTLE CHANGE...EXCEPT FREQUENT GUSTS TO GALE
FORCE N OF 29N AND W OF FRONT...AND SEAS 2.5 TO 4.0 M.
.24 HOUR FORECAST COLD FRONT FROM 31N71.5W TO 27N76.5W TO 25N80W.
WITHIN 31N72W TO 31N81W TO 26N80W TO 27N77W TO 31N72W N TO NE
WINDS 20 TO 30 KT. FREQUENT GUSTS TO GALE FORCE N OF 29N AND W OF
74W. SEAS 2.5 TO 5.5 M...HIGHEST ALONG 31N BETWEEN 72W AND 76W.
ELSEWHERE WITHIN 30N69W TO 31N69W TO 31N72W TO 28N76W TO 25N80W
TO 28N73W TO 30N69W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.5 M IN NW TO N SWELL.
.30 HOUR FORECAST LITTLE CHANGE...EXCEPT FREQUENT GUSTS TO GALE
FORCE DIMINISHED.
.48 HOUR FORECAST STATIONARY FRONT FROM 31N71W TO 24N80.5W.
WITHIN 31N74W TO 31N81W TO 28N80W TO 29N79W TO 31N74W N TO NE
WINDS 20 TO 30 KT. SEAS 3.0 TO 5.5 M. ELSEWHERE WITHIN 31N66W
TO 30N81W TO 25N80W TO 26N77W TO 22N72W TO 26N67W TO 31N66W
...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5
TO 4.0 M IN N SWELL.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 31N46W TO 31N54W TO 30N54W TO 29N50W TO 30N46W TO
31N46W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.24 HOUR FORECAST WITHIN 30N39W TO 31N37W TO 31N44W TO 27N45W TO
26N42W TO 27N39W TO 30N39W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN NW TO N SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. 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 LEWITSKY. NATIONAL HURRICANE CENTER.
$$