HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC WED SEP 23 2026
CCODE/2:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 23.
24 HOUR FORECAST VALID 1200 UTC SEP 24.
48 HOUR FORECAST VALID 1200 UTC SEP 25.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.LOW 52N36W 974 MB MOVING NE 25 KT AND INTENSIFYING. FROM 48N TO
54N E OF 40W WINDS 50 TO 65 KT. SEAS 6 TO 9 M. ALSO FROM 47N TO
55N E OF 42W WINDS 40 TO 50 KT. SEAS 4 TO 7 M. AND FROM 45N TO
55N E OF 45W WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE FROM
40N TO 56N E OF 52W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW E OF AREA 61N22W 957 MB. WITHIN 480 NM NW
QUADRANT AREA OF NW TO N WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M.
ELSEWHERE N OF 53N E OF 40W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW WELL NE OF AREA. CONDITIONS DESCRIBED WITH
LOW 57N39W BELOW.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 34N71W 1011 MB DRIFTING NE. FROM
36N TO 41N BETWEEN 59W AND 75W WINDS 25 TO 40 KT. SEAS 3 TO 5.5
M. ELSEWHERE WITHIN 300 NM SE...420 NM SW...480 NM NW...AND 780
NM NE QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.12 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 35N70W 1010 MB.
BETWEEN 120 NM AND 360 NM NE QUADRANT AREA OF NE WINDS 40 TO 50
KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST COMPLEX LOW WITH NEW CENTER 37N63W 1009 MB AND
SECOND CENTER 35N69W 1009 MB. FROM 38N TO 41N BETWEEN 61W AND
66W AREA OF NE TO E WINDS 40 TO 50 KT. SEAS 4 TO 7 M. ALSO
WITHIN 300 NM NE...840 NM SW...AND 360 NM NW QUADRANTS OF NEW
CENTER WINDS 25 TO 40 KT. SEAS 4 TO 7.5 M. ELSEWHERE WITHIN 300
NM SE...900 NM SW...420 NM NW...AND 480 NM NE QUADRANTS...AND
FROM 36N TO 41N BETWEEN 37W AND 50W WINDS 20 TO 30 KT. SEAS 2.5
TO 4.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 37N69W 997 MB.
WITHIN 300 NM NW QUADRANT AREA OF NE WINDS 40 TO 50 KT. SEAS 5
TO 8 M. ALSO WITHIN 600 NM NE...180 NM SE...240 NW SW...AND 360
NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M. ELSEWHERE
WITHIN 720 NM NE...360 NM SE...660 NM SW...AND 420 NM NW
QUADRANTS...AND WITHIN 240 NM N AND NE OF A LINE FROM 39N53W TO
35N41W TO 36N35W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...HIGHEST SW
QUADRANT.
...GALE WARNING...
.LOW 65N62W 1000 MB MOVING SE 35 KT. BETWEEN 180 NM AND 360 NM S
QUADRANT AREA OF SW TO W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 56N42W 1001 MB. FROM 48N TO 53N BETWEEN
35W AND 47W WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE...EXCEPT
AS DESCRIBED WITH LOW 61N22W ABOVE...E OF A LINE FROM 46N50W TO
57N54W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW MOVED E OF AREA. CONDITIONS DESCRIBED WITH
LOW 57N39W BELOW.
...GALE WARNING...
.36 HOUR FORECAST LOW 59N50W 999 MB. FROM 56N TO 60N BETWEEN 52W
AND 61W AREA OF W TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 57N39W 993 MB. WITHIN 600 NM SE...300 NM
SW...AND 660 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
ELSEWHERE WITHIN 720 NM S...SW...AND NW QUADRANTS WINDS 20 TO 30
KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.48 HOUR FORECAST...EXCEPT AS DESCRIBED WITH LOW 57N39W
ABOVE...N OF 65N W OF GREENLAND AREA OF NW TO N WINDS 25 TO 35
KT. SEAS 2.5 TO 4 M.
.SYNOPSIS AND FORECAST.
.S OF 34N E OF 42W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST S OF 32N BETWEEN 39W AND 44W WINDS 20 TO 30
KT. SEAS TO 3 M.
.48 HOUR FORECAST S OF 34N BETWEEN 40W AND 50W WINDS TO 25 KT.
SEAS TO 3 M.
.LOW 63N38W 1000 MB MOVING S 05 KT. WITHIN 120 NM NW SEMICIRCLE
WINDS TO 25 KT. SEAS 2.5 TO 3 M. ELSEWHERE WITHIN 180 NM NE AND
240 NM SE QUADRANTS WINDS LESS THAN 25 KT. SEAS 2.5 TO 3.5 M IN
N TO NE SWELL.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 61N22W IN
WARNINGS SECTION ABOVE.
.LOW 59N42W MOVING SE 05 KT. EXCEPT AS DESCRIBED WITH LOW 52N36W
IN WARNINGS SECTION ABOVE...WITHIN 480 NM SW AND 360 NM NW
QUADRANTS AREA OF NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 61N22W IN
WARNINGS SECTION ABOVE.
.DENSE FOG VSBY OCCASIONALLY LESS THAN 1 NM N OF 62N E OF
GREENLAND.
.24 HOUR FORECAST DENSE FOG N OF 63N E OF 36W...AND FROM 36N TO
40N BETWEEN 55W AND 64W.
.48 HOUR FORECAST DENSE FOG WITHIN 90 NM EITHER SIDE OF A LINE
FROM 65N56W TO 67N59W.
.FORECASTER FIGURSKEY. OCEAN PREDICTION CENTER.
NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 1200 UTC WED SEP 23.
24 HOUR FORECAST VALID 1200 UTC THU SEP 24.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 25.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC LOW PRES...REMNANTS OF FAY...NEAR 30N38W 1012 MB. WITHIN
31N35W TO 31N41W TO 29N40W TO 29N38W TO 30N35W TO 31N35W NE TO E
WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST LOW PRES NEAR 30N41W 1015 MB. 29N41W WITHIN
31N40W TO 31N44W TO 30N42W TO 30N41W TO 30N40W TO 31N40W E WINDS
20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST LOW PRES NEAR 30N44W 1015 MB. WITHIN 31N42W TO
31N47W TO 30N45W TO 30N43W TO 31N42W E WINDS 20 TO 25 KT. SEAS
2.5 TO 3.0 M.
.ATLC 12 HOUR FORECAST WITHIN 31N79W TO 31N81W TO 30N82W TO
30N81W TO 30N80W TO 30N79W TO 31N79W NE WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 31N80W TO 31N81W TO 30N81W TO 31N80W N
TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN
31N71W TO 31N80W TO 30N80W TO 30N75W TO 30N72W TO 31N71W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 31N78W TO 31N81W TO 29N81W TO 30N79W TO
31N78W N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE
WITHIN 31N67W TO 31N81W TO 27N80W TO 28N75W TO 27N72W TO
31N67W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.CARIBBEAN 06 HOUR FORECAST WITHIN 13N71W TO 13N74W TO 11N73W TO
12N72W TO 11N71W TO 11N70W TO 13N71W...INCLUDING THE GULF OF
VENEZUELA... NE TO E WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.36 HOUR FORECAST WITHIN 13N71W TO 13N74W TO 11N73W TO 12N72W TO
11N71W TO 11N70W TO 13N71W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 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 AL. NATIONAL HURRICANE CENTER.