National Weather Service Marine Forecast FZNT01 KWBC

FZNT01 KWBC 110416
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SUN OCT 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CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

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 0000 UTC OCT 11. 24 HOUR FORECAST VALID 0000 UTC OCT 12. 48 HOUR FORECAST VALID 0000 UTC OCT 13.

.WARNINGS.

STORM WARNING

.COMPLEX LOW WITH INTENSIFYING FIRST CENTER 57N38W 978 MB MOVING N 05 KT THEN TURNING E AFTER 18 HOURS AND SECOND CENTER 58N48W 986 MB MOVING SE 20 KT. WITHIN 240 NM E QUADRANT OF FIRST CENTER...WITHIN 360 NM SW AND 540 NM NW QUADRANTS OF SECOND CENTER...WITHIN 120 NM NW OF A FRONT FROM SECOND CENTER TO 58N43W TO 64N38W WINDS 35 TO 45 KT. SEAS 3 TO 6 M...HIGHEST NEAR 57N52W. ALSO FROM 37N TO 47N BETWEEN 40W AND 61W...AND N OF 44N E OF 61W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE N OF 32N E OF 64W WINDS TO 25 KT. SEAS TO 3 M. .12 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N38W 967 MB. BETWEEN 90 NM AND 240 NM W AND NW QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO 7 M. .24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 58N37W 958 MB AND SECOND CENTER E OF AREA 63N29W 962 MB. WITHIN 120 NM S AND W QUADRANTS OF FIRST CENTER...WITHIN 90 NM OF THE E GREENLAND COAST N OF 60N...AND WITHIN 240 NM OF THE W GREENLAND COAST N OF 60N WINDS 40 TO 55 KT. SEAS 4 TO 7.5 M. ALSO NE OF A LINE FROM 30N40W TO 65N67W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M...HIGHEST W AND SW OF FIRST CENTER. ELSEWHERE N OF 30N E OF 60W...AND WITHIN THE GULF OF SAINT LAWRENCE WINDS TO 25 KT. SEAS TO 3 M. .30 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 59N35W 958 MB AND SECOND CENTER 64N36W 958 MB. WITHIN 120 NM OF NW SEMICIRCLE OF SECOND CENTER WINDS 45 TO 60 KT. SEAS 5 TO 9 M. .48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NEAR 62N40W 966 MB AND NEW SECOND CENTER NEAR 62N48W 970 MB. WITHIN 300 NM SW AND W QUADRANTS OF SECOND CENTER...AND WITHIN 90 NM OF THE E GREENLAND COAST N OF 62N WINDS 40 TO 50 KT. SEAS 5 TO 8.5 M...HIGHEST W OF SECOND CENTER. ALSO N OF 52N E OF 64W WINDS 25 TO 40 KT. SEAS 3 TO 7.5 M IN MIXED SWELL. ELSEWHERE...EXCEPT WHERE OTHERWISE DESCRIBED...N OF 37N E OF 55W WINDS TO 25 KT. SEAS 2.5 TO 5 M.

GALE WARNING

.FROM 32N TO 37N W OF 69W AREA OF SE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .06 HOUR FORECAST FROM 32N TO 37N W OF 69W AREA OF SE TO E WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. .24 HOUR FORECAST NEW LOW INLAND NEAR 38N77W 1008 MB. WITHIN 420 NM NE QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE WITHIN 420 NM E SEMICIRCLE WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 42N56W 996 MB. WITHIN 360 NM SE SEMICIRCLE WINDS 30 TO 40 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 37N TO 51N BETWEEN 45W AND 67W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

GALE WARNING

.30 HOUR FORECAST NEW LOW INLAND NEAR 50N64W 1000 MB. WITHIN 420 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW 50N45W 990 MB. WITHIN 420 NM SE SEMICIRCLE WINDS 25 TO 40 KT. SEAS 4 TO 6 M. ELSEWHERE FROM 36N TO 52N E OF 50W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST NEW LOW NEAR 38N67W 1005 MB. WITHIN 420 NM OF LOW CENTER WINDS 20 TO 30 KT. SEAS TO 3.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 55N TO 65N E OF 61W...AND FROM 32N TO 37N W OF 71W.

24 HOUR FORECAST DENSE FOG N OF 56N E OF 44W
FROM 47N TO 64N W OF 49W...AND NW OF A LINE FROM 33N74W TO 41N63W. .48 HOUR FORECAST DENSE FOG WITHIN 90 NM OF E GREENLAND COAST N OF 60N...FROM 53N TO 61N BETWEEN 40W AND 62W...AND WITHIN 360 NM EITHER SIDE OF A LINE FROM 36N64W TO 54N35W.

.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 60N W OF 61W. .48 HOUR FORECAST LITTLE CHANGE.

.FORECASTER ANDERSON. 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 SUN OCT 11. 24 HOUR FORECAST VALID 0000 UTC MON OCT 12. 48 HOUR FORECAST VALID 0000 UTC TUE OCT 13.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 21N35W TO 19N37W TO 18N37W TO 16N37W TO 17N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.ATLC 24 HOUR FORECAST WITHIN 31N43W TO 31N46W TO 30N48W TO 29N47W TO 29N46W TO 31N43W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL. .48 HOUR FORECAST WITHIN 31N36W TO 31N50W TO 28N55W TO 25N52W TO 28N41W TO 31N36W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NW TO N SWELL.

.ATLC AND CARIBBEAN WITHIN 20N71W TO 20N74W TO 19N74W TO 20N73W TO 20N71W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST WITHIN 20N73W TO 20N75W TO 19N75W TO 19N74W TO 20N73W TO 20N71W TO 20N73W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.CARIBBEAN WITHIN 13N70W TO 13N74W TO 11N74W TO 12N72W TO 11N72W TO 12N70W TO 13N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST WITHIN 13N69W TO 14N70W TO 13N71W TO 12N71W TO 11N69W TO 13N69W...INCLUDING THE GULF OF VENEZUELA...E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.GULF OF AMERICA WITHIN 25N94W TO 25N95W TO 24N97W TO 23N97W TO 23N95W TO 24N93W TO 25N94W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .06 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 ERA. NATIONAL HURRICANE CENTER.