502
FZNT01 KWBC 170406
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC THU SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0000 UTC SEP 17.
24 HOUR FORECAST VALID 0000 UTC SEP 18.
48 HOUR FORECAST VALID 0000 UTC SEP 19.

.WARNINGS.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 58N59W 994 MB MOVING E 20 KT. FROM
51N TO 61N W OF 50W WINDS 20 TO 30 KT. SEAS TO 3.5 M. ELSEWHERE
FROM 51N TO 65N W OF 50W WINDS TO 25 KT. SEAS TO 2.5 M.
.06 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 58N54W 991
MB. WITHIN 300 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW ABSORBED AND NEW LOW TO FORM NEAR
61N39W 984 MB. BETWEEN 180 NM AND 660 NM S QUADRANT AND SW
SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3 TO 4.5 M. ELSEWHERE WITHIN
120 NM OF E GREENLAND COAST N OF 60N...WITHIN 840 NM S AND SW
QUADRANTS...AND BETWEEN 240 NM AND 660 NM W QUADRANT WINDS TO 25
KT. SEAS TO 3 M.
.48 HOUR FORECAST COMPLEX LOW WELL E OF AREA. FROM 54N TO 60N E
OF 47W AREA OF NW TO W WINDS 25 TO 40 KT. SEAS 4 TO 6 M.
ELSEWHERE FROM 48N TO 62N E OF 53W AREA OF W TO NW WINDS TO 25
KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...
.LOW 50N51W 1017 MB MOVING NE 35 KT. WITHIN 240 NM SE SEMICIRCLE
WINDS TO 25 KT. SEAS TO 2.5 M.
.12 HOUR FORECAST LOW 54N40W 1003 MB. WITHIN 360 NM SE AND 420 NM
SW QUADRANTS WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW E OF AREA 57N30W 990 MB. WITHIN 840 NM SW
QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M. ELSEWHERE CONDITIONS
DESCRIBED WITH GALE WARNING ABOVE.
.48 HOUR FORECAST LOW AND CONDITIONS WELL E OF AREA.

...GALE WARNING...
.48 HOUR FORECAST NEW COMPLEX LOW WITH MAIN CENTER NEAR 48N59W
998 MB. WITHIN 180 NM SW SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO
2.5 M.

.SYNOPSIS AND FORECAST.

.LOW WELL E OF AREA 61N17W 974 MB MOVING E 15 KT. FROM 52N TO 61N
E OF 50W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...HIGHEST NEAR
59N35W. ELSEWHERE N OF 51N E OF 50W WINDS TO 25 KT. SEAS TO 3.5
M.
.24 HOUR FORECAST LOW AND CONDITIONS WELL E OF AREA.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 53N E OF
58W...AND WITHIN 120 NM OF THE W GREENLAND COAST N OF 60N.
.24 HOUR FORECAST DENSE FOG N OF 65N W OF GREENLAND...FROM 42N TO
48N BETWEEN 45W AND 51W...AND NW OF A LINE FROM 42N69W TO 44N64W.

.48 HOUR FORECAST DENSE FOG N OF 63N E OF GREENLAND...AND FROM
40N TO 52N E OF 60W.

.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 THU SEP 17.
24 HOUR FORECAST VALID 0000 UTC FRI SEP 18.
48 HOUR FORECAST VALID 0000 UTC SAT SEP 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N78W TO 31N80W TO 29N80W TO 31N78W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. WITHIN 31N70.5W TO 31N72W
TO 31N72.5W TO 30N72W TO 30N71.5W TO 31N70.5W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.ATLC AND CARIBBEAN WITHIN 21N71W TO 21N72W TO 20N75W TO 19N74W
TO 20N73W TO 20N71W TO 21N71W E WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.CARIBBEAN WITHIN 14N70W TO 14N75W TO 11N75W TO 12N72W TO 11N71W
TO 12N69W TO 14N70W...INCLUDING THE GULF OF VENEZUELA... NE TO E
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 13N67W TO 15N69W TO 13N74W TO 11N74W TO
10N72W TO 11N68W TO 13N67W...INCLUDING THE GULF OF VENEZUELA...
E WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 14N68W TO 15N72W TO 15N74W TO 12N74W TO
11N72W TO 12N68W TO 14N68W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.GULF OF AMERICA WITHIN 27N83W TO 29N83W TO 28N84W TO 27N84W TO
26N83W TO 26N82W TO 27N83W NE TO E WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M. WITHIN 29N88W TO 29N90W TO 28N90W TO 28N88W TO
29N88W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 29N88W TO 29N91W TO 28N91W TO 27N89W TO
28N88W TO 29N88W 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.

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

.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.

$$