FZNT01 KWBC 170420
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 17.
24 HOUR FORECAST VALID 0000 UTC OCT 18.
48 HOUR FORECAST VALID 0000 UTC OCT 19.

.WARNINGS.

...STORM WARNING...
.COMPLEX LOW WITH FIRST CENTER 53N43W 976 MB MOVING NE 25 KT AND
SECOND CENTER 59N48W 973 MB MOVING NE 20 KT. WITHIN 240 NM W AND
SW OF A LINE FROM 60N50W TO 50N40W WINDS 40 TO 50 KT. SEAS 4 TO
8.5 M...HIGHEST NEAR 51N44W. ELSEWHERE N OF 40N E OF 62W WINDS 25
TO 40 KT. SEAS 2.5 TO 7 M...HIGHEST FROM 45N TO 59N BETWEEN 35W
AND 52W. ALSO S OF 40N E OF 60W WINDS LESS THAN 25 KT. SEAS 2.5
TO 4.5 M.
.24 HOUR FORECAST COMBINED LOW 65N38W 970 MB. BETWEEN 120 NM AND
360 NM S QUADRANT WINDS 35 TO 50 KT. SEAS 5.5 TO 10.5 M.
ELSEWHERE N OF 57N E OF 48W WINDS25 TO 35 KT. SEAS 4 TO 8.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS MOVED WELL NE OF AREA.

...STORM WARNING...
.INLAND LOW NEAR 48N69W 996 MB MOVING NE 35 KT AND INTENSIFYING.
FROM 34N TO 49N W OF 58W WINDS 20 TO 30 KT. SEAS TO 3 M.
.06 HOUR FORECAST LOW 49N63W 990 MB. WITHIN 660 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 55N48W 983 MB. WITHIN 240 NM S QUADRANT
WINDS 35 TO 50 KT. SEAS 4 TO 6 M. ELSEWHERE BETWEEN 57N AND A
LINE FROM 36N64W TO 40N49W TO 49N35W AND WITHIN THE GULF OF SAINT
LAWRENCE WINDS 25 TO 40 KT. SEAS 2.5 TO 8 M IN MIXED
SWELL...HIGHEST NEAR 57N35W. ALSO S OF 49N E OF 47W WINDS LESS
THAN 25 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW MOVED E OF AREA NEAR 66N28W 969 MB. FROM
57N TO 62N E OF 46W AND FROM 63N TO 65N E OF GREENLAND WINDS 30
TO 45 KT. SEAS 5 TO 8.5 M. ELSEWHERE FROM 40N TO 65N E OF 65W
WINDS 20 TO 30 KT. SEAS 2.5 TO 7 M...HIGHEST NEAR 35W FROM 55N TO
63N.

...STORM WARNING...
.24 HOUR FORECAST NEW LOW TO FORM NEAR 34N74W 1012 MB. FRONT TO
EXTEND FROM 41N60W TO LOW CENTER TO 31N76W. WITHIN 150 NM NW AND
W OF FRONT S OF 39N WINDS 30 TO 45 KT. SEAS 3 TO 5.5 M. ELSEWHERE
NW OF THE FRONT WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.30 HOUR FORECAST LOW 34N72W 1010 MB. WITHIN 180 NM NW SEMICIRCLE
WINDS 40 TO 50 KT. SEAS 4 TO 6.5 M.
.48 HOUR FORECAST LOW 33N70W 1009 MB. FRONT TO EXTEND FROM 40N49W
TO 36N59W TO 35N69W TO 31N73W. WITHIN 240 NM N AND NW OF THE
FRONT W OF 62W WINDS 30 TO 45 KT. SEAS 4 TO 8 M. ELSEWHERE W OF
THE FRONT WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M.

...GALE WARNING...
.24 HOUR FORECAST N OF 60N BETWEEN 49W AND 61W WINDS 25 TO 35 KT.
SEAS 2.5 TO 5.5 M. 
.48 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH LOW 66N28W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM OF E
GREENLAND COAST...FROM 56N TO 65N BETWEEN 47W AND 56W...FROM 63N
TO 65N W OF 61W...AND FROM 41N TO 45N BETWEEN 65W AND 69W.
.24 HOUR FORECAST DENSE FOG WITHIN THE AREA BOUNDED BY A LINE
FROM 53N55W TO 57N38W TO 61N65W TO 56N61W TO 53N55W AND N OF 64N
BETWEEN GREENLAND COAST AND 37W.
.48 HOUR FORECAST DENSE FOG N OF 64N E OF GREENLAND AND FROM 48N
TO 52N BETWEEN 49W AND 52W.

.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 64N W OF 60W. 
.48 HOUR FORECAST LIGHT FREEZING SPRAY N OF 62N W OF 60W.

.FORECASTER JOSEPH. 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 SAT OCT 17.
24 HOUR FORECAST VALID 0000 UTC SUN OCT 18.
48 HOUR FORECAST VALID 0000 UTC MON OCT 19.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 18 HOUR FORECAST 31N78W TO 28N60W. WITHIN 30N79W TO 31N79W
TO 31N81W TO 31N82W TO 29N81W TO 29N80W TO 30N79W NW TO N WINDS 
20 TO 30 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST COLD FRONT FROM 31N76W TO 26N80W. WITHIN 
31N77W TO 31N81W TO 27N80W TO 28N79W TO 31N77W N WINDS 20 TO 30 
KT WITH FREQUENT GUSTS TO GALE FORCE. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST COLD FRONT FROM 31N72W TO 24N80W. WITHIN 
31N68W TO 31N81W TO 25N80W TO 27N77W TO 26N75W TO 31N68W N WINDS 
25 TO 35 KT. SEAS 4.0 TO 5.5 M IN N TO NE SWELL.

...GULF OF AMERICA GALE WARNING...
.GULF OF AMERICA COLD FRONT FROM 31N88W TO 21N97W. WITHIN 25N97W
TO 26N97W TO 23N98W TO 21N98W TO 21N97W TO 23N97W TO 25N97W N 
WINDS 30 TO 35 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 30N86W TO
31N87W TO 30N94W TO 27N97W TO 21N96W TO 26N93W TO 30N86W N WINDS
20 TO 30 KT. SEAS 2.5 TO 4.0 M.
.24 HOUR FORECAST COLD FRONT FROM 27N82W TO 21N94W TO 19N93W. 
WITHIN 20N95W TO 21N96W TO 21N97W TO 19N96W TO 18N95W TO 18N94W 
TO 20N95W...INCLUDING WITHIN 60 NM OF COAST OF VERACRUZ... NW TO 
N WINDS 30 TO 45 KT. SEAS 6.5 TO 8.0 M IN NW TO N SWELL. 
ELSEWHERE WITHIN 27N83W TO 30N84W TO 31N88W TO 27N97W TO 21N97W 
TO 19N93W TO 27N83W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST COLD FRONT FROM 24N81W TO 19N91W. WITHIN 
20N94W TO 21N96W TO 20N97W TO 19N96W TO 18N95W TO 18N93W TO 
20N94W NW TO N WINDS 30 TO 40 KT. SEAS 4.0 TO 5.5 M. ELSEWHERE 
WITHIN 30N84W TO 29N91W TO 25N97W TO 22N98W TO 19N91W TO 23N82W 
TO 30N84W NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M IN NE SWELL.

.SYNOPSIS AND FORECAST.

.ATLC 12 HOUR FORECAST WITHIN 31N46W TO 31N53W TO 30N51W TO
30N49W TO 31N46W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO
N SWELL.
.24 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN WITHIN 13N70W TO 13N73W TO 11N75W TO 12N72W TO 11N72W
TO 12N69W TO 13N70W...INCLUDING THE GULF OF VENEZUELA... NE TO E
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.12 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 CHRISTENSEN. NATIONAL HURRICANE CENTER.

$$