HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SUN SEP 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 13.
24 HOUR FORECAST VALID 0000 UTC SEP 14.
48 HOUR FORECAST VALID 0000 UTC SEP 15.
.WARNINGS.
...GALE WARNING...
.LOW 58N39W 987 MB MOVING NE 15 KT THEN SLOWING AND TURNING SE
AFTER 12 HOURS. WITHIN 120 NM NW OF A FRONT FROM 58N42W TO
63N38W...AND FROM 53N TO 57N BETWEEN 48W AND 43W...WINDS 25 TO 35
KT. SEAS 2.5 TO 5 M. ELSEWHERE FROM 39N TO 64N BETWEEN 57W AND
47W...AND FROM 39N TO 61N BETWEEN 47W AND 35W...WINDS 20 TO 30
KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW JUST E OF AREA 60N32W 995 MB. FROM 54N TO
57N BETWEEN 37W AND 35W WINDS 25 TO 35 KT. SEAS 4 TO 5 M.
ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE FROM 42N54W TO 42N35W
TO 64N35W TO 56N54W TO 42N54W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5
M.
.48 HOUR FORECAST LOW WELL E OF AREA. FROM 49N TO 57N BETWEEN 43W
AND 35W WINDS LESS THAN 25 KT. SEAS TO 3 M.
...GALE WARNING...
.15 HOUR FORECAST NEW INLAND LOW 60N67W 984 MB. WITHIN 90 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 62N66W 986 MB. WITHIN 180 NM SE AND E
QUADRANTS...AND WITHIN 120 NM NE OF A FRONT FROM 63N65W TO 61N58W
TO 59N55W...WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.42 HOUR FORECAST LOW 65N63W 991 MB. BETWEEN A FRONT FROM 63N54W
TO 61N52W TO 60N48W AND THE W COAST OF GREENLAND WINDS 25 TO 35
KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 66N62W 993 MB. BETWEEN A LINE FROM 62N52W
TO 60N49W AND THE W COAST OF GREENLAND AREA OF SE WINDS 25 TO 35
KT. SEAS TO 3 M. ELSEWHERE FROM 64N TO 67N BETWEEN 61W AND 54W
WINDS 20 TO 30 KT. SEAS TO 3 M.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 42N69W 1009 MB. FROM 39N TO 43N BETWEEN
68W AND 63W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST ORIGINAL LOW DISSIPATED AND NEW LOW FORMED NEAR
59N53W 998 MB. FROM 47N TO 50N BETWEEN 53W AND 50W AREA OF S
WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE WITHIN AN AREA
BOUNDED BY A LINE FROM 32N72W TO 40N43W TO 59N43W TO LOW CENTER
TO 35N78W TO 32N72W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.SYNOPSIS AND FORECAST.
.24 HOUR FORECAST IN THE GULF OF SAINT LAWRENCE N OF 47N E OF 65W
AREA OF SW WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST CONDITIONS ABSORBED BY LOW 59N53W DESCRIBED IN
THIRD GALE WARNING ABOVE.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 60 NM EITHER
SIDE OF A LINE FROM 55N40W TO 58N40W TO 59N35W.
.24 HOUR FORECAST DENSE FOG FROM 59N TO 61N BETWEEN 62W AND
58W...AND NW OF A LINE FROM 41N68W TO 43N64W.
.48 HOUR FORECAST DENSE FOG FROM 58N TO 62N BETWEEN 55W AND
45W...AND WITHIN 180 NM OF THE LABRADOR COAST FROM 50N TO 59N.
.FORECASTER CONNELLY. 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 SEP 13.
24 HOUR FORECAST VALID 0000 UTC MON SEP 14.
48 HOUR FORECAST VALID 0000 UTC TUE SEP 15.
.WARNINGS.
...CARIBBEAN GALE WARNING...
.CARIBBEAN WITHIN 11.5N74W TO 12N74.5W TO 12N75W TO 11N75.5W TO
11N75W TO 11N74.5W TO 11.5N74W NE TO E WINDS 30 TO 35 KT. SEAS
3.5 TO 4.0 M. ELSEWHERE WITHIN 15N70W TO 16N74W TO 14N78W TO
12N79W TO 10N76W TO 11N70W TO 15N70W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 3.0 TO 3.5 M.
REMAINDER OF AREA WITHIN 15N70W TO 16N73W TO 17N79W TO 13N82W TO
10N80W TO 11N70W TO 15N70W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN E SWELL.
.09 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW GALE.
.24 HOUR FORECAST WITHIN 13N69W TO 14N71W TO 13N76W TO 11N75W TO
12N72W TO 11N69W TO 13N69W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 13N69W TO 16N74W TO 15N82W TO 13N82W TO 10N81W
TO 12N69W TO 13N69W...INCLUDING THE GULF OF VENEZUELA...WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.48 HOUR FORECAST WITHIN 16N69W TO 14N72W TO 14N76W TO 10N76W TO
12N72W TO 12N69W TO 16N69W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
ELSEWHERE WITHIN 16N69W TO 14N73W TO 16N77W TO 13N81W TO 10N76W
TO 12N68W TO 16N69W WINDS 20 KT OR LESS. SEAS 2.5 M IN E SWELL.
.SYNOPSIS AND FORECAST.
.ATLC AND CARIBBEAN WITHIN 20N71W TO 20N74W TO 20N75W TO 19N75W
TO 20N73W TO 20N71W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 18N87W TO 18N88W TO 16N88W TO 16N87W TO 16N85W
TO 18N87W...INCLUDING THE GULF OF HONDURAS...E WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 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 DELGADO. NATIONAL HURRICANE CENTER.
$$