North Atlantic High Seas Forecast

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FZNT01 KWBC 252218
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON SEP 25 2023

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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).

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 N OF 31N WILL BE
LIMITED 
TO WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 12 FEET OR 
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, AND VOLCANIC ASH.

LESSER CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO

PRESERVE CONTINUITY WHERE APPROPRIATE. SEND FEEDBACK VIA 
HTTPS://OCEAN.WEATHER.GOV/CONTACT/INDEX.PHP (ALL LOWERCASE).

SECURITE

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC SEP 25. 
24 HOUR FORECAST VALID 1800 UTC SEP 26.
48 HOUR FORECAST VALID 1800 UTC SEP 27.

.WARNINGS.

...STORM WARNING...
.LOW 40N44W 1008 MB MOVING NE 40 KT. WITHIN 120 NM NE...300 NM SE
AND S...180 NM SW...AND 60 NM NW QUADRANTS WINDS 25 TO 40 KT.
SEAS 8 TO 13 FT.
.12 HOUR FORECAST LOW 42N34W 1000 MB. WITHIN 120 NM S AND SW
SEMICIRCLES WINDS 40 TO 50 KT. SEAS 12 TO 16 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL E OF AREA.

...GALE WARNING...
.LOW E OF AREA NEAR 58N32W 986 MB MOVING SE 10 KT. WITHIN 120 NM
W QUADRANT WINDS 35 TO 45 KT. SEAS 16 TO 19 FT. ELSEWHERE E OF A
LINE FROM 51N35W TO 54N43W TO 66N37W WINDS 25 TO 35 KT. SEAS 10
TO 17 FT.
.24 HOUR FORECAST LOW WELL E OF AREA. ASSOCIATED CONDITIONS
ABSORBED BY LOW 54N38W DESCRIBED BELOW.

...GALE WARNING...
.LOW 39N72W 1014 MB MOVING SE 05 KT. WITHIN 360 NM NE...AND 120
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 37N72W 1014 MB. WITHIN 300 NM NE...180 NM
W...AND 240 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 33N70W 1014 MB. WITHIN 240 NM N OF A LINE
FROM 35N75W TO LOW CENTER TO 37N61W WINDS 25 TO 35 KT. SEAS 8 TO
17 FT.

...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 39N61W 1013  MOVING E 30 KT. FROM
36N TO 41N BETWEEN 66W AND 54W WINDS 20 TO 30 KT. SEAS LESS THAN
8 FT.
.24 HOUR FORECAST COMBINED LOW 38N46W 1008 MB. FROM 34N TO 42N
BETWEEN 54W AND 39W WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL E OF AREA.

...GALE WARNING...
.LOW 61N55W 1010 MB MOVING SE 10 KT. N OF 55N W OF 57W WINDS 25
TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS ABSORBED
BY LOW 54N38W DESCRIBED BELOW.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 54N38W 994 MB. N OF 60N E OF GREENLAND
WINDS 35 TO 45 KT. SEAS 10 TO 19 FT. ELSEWHERE FROM 46N TO 62N E
OF 53W WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW E OF AREA NEAR 53N26W 987 MB. FROM 41N TO
60N E OF 45W WINDS 25 TO 35 KT. SEAS 10 TO 17 FT.

...GALE WARNING...
.24 HOUR FORECAST N OF 60N W OF 57W WINDS TO 25 KT. SEAS TO 8
FT.
.48 HOUR FORECAST NEW LOW 63N56W 997 MB. N OF 54N W OF 50W...AND
N OF 60N W OF GREENLAND WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.48 HOUR FORECAST N OF 60N E OF 41W WINDS 25 TO 35 KT. SEAS 10 TO
18 FT.

.SYNOPSIS AND FORECAST.

.LOW 47N46W 1015 MB MOVING SE 10 KT. WITHIN 180 NM W SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 43N41W 1012 MB. ASSOCIATED CONDITIONS
DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 38N TO 42N
BETWEEN 72W AND 66W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.FORECASTER BYRD. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1800 UTC MON SEP 25.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 26.
48 HOUR FORECAST VALID 1800 UTC WED SEP 27.

.WARNINGS.

...ATLANTIC TROPICAL STORM WARNING...
.TROPICAL STORM PHILIPPE NEAR 17.3N 46.7W 1002 MB AT 2100 UTC
SEP 25 MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 40
KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE...100 NM NE QUADRANT AND 70 NM SE QUADRANT.  SEAS 12
FT OR GREATER WITHIN 180 NM N SEMICIRCLE...75 NM SE QUADRANT AND
30 NM SW QUADRANT WITH SEAS TO 19 FT. ELSEWHERE WITHIN 19N42W TO
21N44W TO 21N47W TO 19N48W TO 16N46W TO 16N42W TO 19N42W WINDS 
20 TO 33 KT. SEAS 11 TO 12 FT. REMAINDER AREA WITHIN 22N41W TO 
25N44W TO 24N50W TO 18N52W TO 15N46W TO 17N42W TO 22N41W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM PHILIPPE NEAR 18.4N 50.4W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE. RADIUS 
OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER WITH SEAS
TO 21 FT. ELSEWHERE WITHIN 22N48W TO 21N52W TO 20N53W TO 18N51W 
TO 17N48W TO 19N46W TO 22N48W WINDS 20 TO 33 KT. SEAS 12 FT. 
REMAINDER AREA WITHIN 24N43W TO 27N48W TO 24N55W TO 20N56W TO 
16N52W TO 17N45W TO 24N43W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT 
IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM PHILIPPE NEAR 20.4N 54.0W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE. RADIUS 
OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER WITH SEAS
TO 21 FT. ELSEWHERE WITHIN 23N51W TO 24N55W TO 20N56W TO 19N52W 
TO 19N49W TO 20N49W TO 23N51W WINDS 20 TO 33 KT. SEAS 12 FT. 
REMAINDER AREA WITHIN 21N48W TO 25N53W TO 23N58W TO 21N58W TO 
18N56W TO 18N48W TO 21N48W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT 
IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM PHILIPPE NEAR 22.2N 56.3W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM PHILIPPE NEAR 22.9N 57.7W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST TROPICAL STORM PHILIPPE NEAR 23.4N 59.5W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC 12 HOUR FORECAST WITHIN 16N35W TO 15N37W TO 13N37W TO
12N37W TO 11N35W TO 16N35W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO
9 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
11N38W 1007 MB. WITHIN 15N35W TO 15N38W TO 14N39W TO 12N39W TO 
09N37W TO 09N35W TO 15N35W WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
12N42W 1007 MB. WITHIN 18N37W TO 18N44W TO 15N44W TO 10N42W TO 
10N40W TO 14N36W TO 18N37W E TO SE WINDS 20 TO 30 KT. SEAS 8 TO 
10 FT.

.CARIBBEAN WITHIN 13N72W TO 15N73W TO 15N74W TO 12N74W TO 12N73W
TO 12N72W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.
.24 HOUR FORECAST WITHIN 13N72W TO 14N72W TO 13N74W TO 12N74W TO
11N73W TO 12N72W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.48 HOUR FORECAST WITHIN 13N72W TO 14N72W TO 13N74W TO 12N74W TO
11N73W TO 12N72W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.


.FORECASTER AL. NATIONAL HURRICANE CENTER.

$$