METAREA 4 bulletinset


HIGH SEAS FORECAST
FZNT01 KWBC 170956

HSFAT1

HIGH SEAS FORECAST FOR METAREA IV

NWS OCEAN PREDICTION CENTER WASHINGTON DC

1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 17.

24 HOUR FORECAST VALID 0600 UTC SEP 18.

48 HOUR FORECAST VALID 0600 UTC SEP 19.

.WARNINGS.

...STORM WARNING...

.42 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.

.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 49N56W 989

MB. WITHIN 180 NM NW SEMICIRCLE WINDS 35 TO 50 KT. SEAS 2.5 TO

4.5 M. ALSO WITHIN 240 NM NE...300 NM SE...AND 420 NM SW

QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE WITHIN

THE GULF OF SAINT LAWRENCE...WITHIN 420 NM NE QUADRANT...AND

WITHIN 720 NM S SEMICIRCLE WINDS TO 25 KT. SEAS TO 3 M.

...GALE WARNING...

.COMPLEX LOW WITH MAIN CENTER NEAR 58N53W 992 MB MOVING E 20 KT.

WITHIN 300 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS TO 3.5 M.

ELSEWHERE FROM 51N TO 65N W OF 50W WINDS TO 25 KT. SEAS TO 2.5

M.

.24 HOUR FORECAST COMPLEX LOW ABSORBED AND NEW COMPLEX LOW TO

FORM WITH MAIN CENTER JUST E OF AREA 61N33W 981 MB. WITHIN 150 NM

EITHER SIDE OF A LINE FROM 62N52W TO 57N44W TO 55N35W WINDS 30 TO

40 KT. SEAS 4 TO 5.5 M...HIGHEST NEAR 60N49W. ELSEWHERE WITHIN

1020 NM S AND 300 NM NW QUADRANTS AND 780 NM SW SEMICIRCLE WINDS

20 TO 30 KT. SEAS TO 4 M.

.48 HOUR FORECAST COMPLEX LOW WELL E OF AREA. FROM 55N TO 60N E

OF 46W AREA OF NW TO W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.

ELSEWHERE FROM 48N TO 61N E OF 50W AREA OF W TO NW WINDS TO 25

KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...

.LOW 52N45W 1010 MB MOVING NE 35 KT. WITHIN 300 NM SE SEMICIRCLE

WINDS 20 TO 30 KT. SEAS TO 3 M.

.06 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 AND CONDITIONS WELL E OF AREA.

.SYNOPSIS AND FORECAST.

.LOW 62N41W 994 MB MOVING E 10 KT. FROM 52N TO 61N E OF 50W WINDS

20 TO 30 KT. SEAS 2.5 TO 4.5 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 WITHIN THE BAY OF

FUNDY...WITHIN 240 NM EITHER SIDE OF A LINE FROM 41N59W TO

53N40W...AND WITHIN 90 NM OF THE GREENLAND COAST BETWEEN 42W AND

53W.

.24 HOUR FORECAST DENSE FOG WITHIN THE BAY OF FUNDY...FROM 41N TO

49N BETWEEN 46W AND 51W...N OF 65N W OF GREENLAND...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 0600 UTC THU SEP 17.

24 HOUR FORECAST VALID 0600 UTC FRI SEP 18.

48 HOUR FORECAST VALID 0600 UTC SAT SEP 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N78W TO 31N80W TO 29N81W TO 30N79W TO 31N78W

WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL.

.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS

LESS THAN 2.5 M.

.CARIBBEAN WITHIN 13N72W TO 13N75W TO 13N77W TO 10N76W TO 11N73W

TO 11N70W TO 13N72W...INCLUDING THE GULF OF VENEZUELA... NE TO E

WINDS 20 TO 25 KT. SEAS TO 2.5 M.

.24 HOUR FORECAST WITHIN 16N69W TO 17N72W TO 17N79W TO 13N78W TO

10N72W TO 12N68W TO 16N69W...INCLUDING IN MONA PASSAGE AND THE

GULF OF VENEZUELA...E WINDS 20 TO 25 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST WITHIN 14N70W TO 16N73W TO 14N77W TO 13N77W TO

11N72W TO 12N69W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...

E WINDS 20 TO 25 KT. SEAS TO 2.5 M.

.GULF OF AMERICA 21 HOUR FORECAST WITHIN 28N92W TO 29N93W TO

28N94W TO 26N95W TO 24N93W TO 24N92W TO 28N92W E WINDS 20 TO 25

KT. SEAS LESS THAN 2.5 M.

.24 HOUR FORECAST WITHIN 28N89W TO 29N90W TO 29N93W TO 27N93W TO

26N91W TO 26N90W TO 28N89W 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.

$$