583
FZNT01 KWBC 171600
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC FRI OCT 17 2025

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC OCT 17.
24 HOUR FORECAST VALID 1200 UTC OCT 18.
48 HOUR FORECAST VALID 1200 UTC OCT 19.

.WARNINGS.

...STORM WARNING...
.LOW 39N63W 988 MB MOVING S 15 KT AND THEN MOVING SE WITHIN NEXT
12 HOURS. BETWEEN 60 NM AND 240 NM NW SEMICIRCLE WINDS 40 TO 55
KT. SEAS 5 TO 7 M...HIGHEST NEAR 41N64W. ELSEWHERE BETWEEN 120 NM
AND 360 NM NE...180 NM AND 480 NM S...120 NM AND 540 M SW AND 90
NM AND 360 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3.5 TO 5.5 M.
ALSO FROM 31N TO 45N BETWEEN 50W AND 76W WINDS TO 25 KT. SEAS 2.5
TO 4 M IN MIXED SWELL.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 37N56W 984 MB AND
SECOND NEW LOW 42N55W 993 MB. WITHIN 120 NM SW AND W OF A LINE
FROM 35N59W TO 40N60W TO 43N59W WINDS 35 TO 50 KT. SEAS 5.5 TO 8
M. ELSEWHERE WITHIN 300 NM NE AND 420 NM NW QUADRANTS OF SECOND
LOW AND WITHIN 360 NM NE...420 NM SE...540 NM SW AND NW QUADRANTS
OF MAIN LOW WINDS 25 TO 40 KT. SEAS 3.5 TO 6 M. ALSO FROM 31N TO
47N BETWEEN 35W AND 70W WINDS TO 25 KT. SEAS 2.5 TO 4.5 IN MIXED
SWELL.
.48 HOUR FORECAST COMBINED LOW 41N50W 988 MB. BETWEEN 60 NM AND
360 NM SE SEMICIRCLE WINDS 30 TO 40 KT. SEAS 4.5 TO 7 M.
ELSEWHERE BETWEEN 420 NM AND 720 NM NE...WITHIN 600 NM E...660 NM
SE...600 NM SW AND 540 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS
2.5 TO 6 M...HIGHEST SW AND S OF LOW CENTER.

...GALE WARNING...
.LOW 42N39W 992 MB MOVING NE 35 KT. WITHIN 120 NM E...600 NM S
AND 840 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW E OF THE AREA. FROM 47N TO 60N E OF 40W
WINDS TO 25 KT. SEAS 2.5 TO 4 M IN MIXED SWELL.
.48 HOUR FORECAST LOW WELL E OF THE AREA AND CONDITIONS
DISSIPATED.

.SYNOPSIS AND FORECAST.

.LOW E OF THE AREA 52N28W 991 MB MOVING N 05 KT. FROM 53N TO 60N
E OF 60W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M...HIGHEST E OF 38W.
.24 HOUR FORECAST LOW E OF THE AREA 54N29W 992 MB. FROM 50N TO
60N E OF 40W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS E OF THE AREA.

.24 HOUR FORECAST N OF 63N E OF GREENLAND AREA OF NE WINDS 20 TO
30 KT. SEAS TO 3 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 49N TO 58N W OF
40W TO THE COAST OF LABRADOR AND NEWFOUNDLAND.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM W AND NW OF A LINE FROM
51N51W TO 58N59W.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 48N BETWEEN 45W AND 52W
AND WITHIN 120 NM W OF A LINE FROM 59N60W TO 65N64W.

.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 1200 UTC FRI OCT 17.
24 HOUR FORECAST VALID 1200 UTC SAT OCT 18.
48 HOUR FORECAST VALID 1200 UTC SUN OCT 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N48W TO 19N65.5W. WITHIN 30N43W TO
31N43W TO 31N50W TO 21N61W TO 21N58W TO 24N50W TO 30N43W SW WINDS
20 TO 30 KT. SEAS 2.5 TO 4.0 M IN SW TO W SWELL. ELSEWHERE
WITHIN 31N38W TO 31N54W TO 25N62W TO 21N62W TO 20N58W TO 24N49W
TO 31N38W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SW AND
NW SWELL.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N47W TO 19N65.5W.
WITHIN 29N44W TO 31N44W TO 31N50W TO 27N54W TO 25N52W TO 26N50W
TO 29N44W SW WINDS 20 TO 30 KT. SEAS 3.5 TO 4.0 M IN SW SWELL.
ELSEWHERE WITHIN 28N41W TO 31N38W TO 31N50W TO 25N58W TO 22N55W
TO 24N48W TO 28N41W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN
MIXED SW AND W TO NW SWELL.
.36 HOUR FORECAST CONDITIONS MERGED WITH AREA DESCRIBED BELOW.

.ATLC COLD FRONT FROM 31N56.5W TO 25.5N68W. STATIONARY FRONT FROM
25.5N68W TO 24N76W. WITHIN 31N58W TO 31N71W TO 30N70W TO 29N66W
TO 31N58W NW WINDS 20 TO 25 KT. SEAS 2.5 TO 4.0 M IN NW TO N
SWELL. ELSEWHERE WITHIN 31N55W TO 29N68W TO 31N79W TO 26N77W TO
27N69W TO 26N62W TO 31N55W...INCLUDING ATLANTIC EXPOSURES...WINDS
20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NW TO NE SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N54W TO 23N75W. WITHIN
31N50W TO 31N65W TO 30N63W TO 28N56W TO 31N50W W WINDS 20 TO 30
KT. SEAS 3.5 TO 5.5 M IN W TO NW SWELL. ELSEWHERE WITHIN 31N50W
TO 29N61W TO 31N77W TO 25N75W TO 24N65W TO 26N57W TO
31N50W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS
2.5 TO 5.0 M IN NW TO NE SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N48W TO 25N64W. WITHIN
31N38W TO 30N76W TO 23N74W TO 21N62W TO 31N38W...INCLUDING
ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NE
TO NW SWELL.

.ATLC WITHIN 12N40W TO 12N41W TO 11N41W TO 10N41W TO 12N40W E TO
SE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 15N39W
TO 14N42W TO 13N42W TO 11N41W TO 11N39W TO 12N38W TO 15N39W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N AND E SWELL.
.24 HOUR FORECAST WITHIN 13N47W TO 14N48W TO 13N49W TO 12N49W TO
12N47W TO 13N47W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 16N44W TO 16N48W TO 13N50W TO 12N46W TO 14N44W
TO 14N41W TO 16N44W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED N AND NE SWELL.
.48 HOUR FORECAST WITHIN 14N42W TO 18N52W TO 15N58W TO 13N48W TO
08N44W TO 08N40W TO 14N42W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN E TO SE SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.


.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.

$$