095
FZNT01 KWBC 262155
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU SEP 26 2024

CCODE/2:31:04:11:00/AOE+AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP

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 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, VOLCANIC ASH,
AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER
CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO
PRESERVE CONTINUITY WHERE APPROPRIATE.

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 26.
24 HOUR FORECAST VALID 1800 UTC SEP 27.
48 HOUR FORECAST VALID 1800 UTC SEP 28.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM ISAAC NEAR 37.5N 50.6W 995 MB AT 2100 UTC SEP 26
MOVING E OR 080 DEG AT 09 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N AND 60 NM
S SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 60 NM NE...120 NM
SE...180 NM SW...AND 210 NM NW QUADRANTS...WITH SEAS TO 17 FT.
ELSEWHERE FROM 32N TO 46N BETWEEN 48W AND 59W WINDS 20 TO 33 KT.
SEAS 8 TO 15 FT.
.24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 38.2N 45.5W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM N SEMICIRCLE...AND 70 NM SE AND 60 NM SW QUADRANTS.
 SEAS 12 FT OR GREATER WITHIN 150 NM E AND 120 NM W
SEMICIRCLES... WITH SEAS TO 26 FT. ELSEWHERE WITHIN 300 NM OF
CENTER...EXCEPT
240 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 18 FT.
.36 HOUR FORECAST HURRICANE ISAAC 39.2N 42.0W. MAXIMUM SUSTAINED
WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM
NE AND SW...AND 90 NM SE AND 60 NM NW QUADRANTS. SEAS 12 FT OR
GREATER WITHIN 180 NM OF CENTER...WITH SEAS TO 29 FT.
.48 HOUR FORECAST HURRICANE ISAAC 40.5N 38.7W. MAXIMUM SUSTAINED
WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 110
NM NE...130 NM SE...90 NM SW...AND 100 NM NW QUADRANTS. SEAS 12
FT OR GREATER WITHIN 80 NM W SEMICIRCLE...AND 90 NM NE AND 110
NM SE QUADRANTS. SEAS 12 FT OR GREATER WITHIN 240 NM OF
CENTER...WITH SEAS TO 31 FT. ELSEWHERE FROM 31N TO 46N E OF 46W
WINDS 20 TO 33 KT. SEAS 9 TO 18 FT.

...HURRICANE WARNING...
.12 HOUR FORECAST HURRICANE HELENE INLAND NEAR 31.5N 83.7W.
MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE
WINDS WITHIN 240 NM NE...270 NM SE...120 NM SW...AND 90 NM NW
QUADRANTS. ELSEWHERE FROM 31N TO 36N W OF 74W WINDS 20 TO 33 KT.
SEAS 9 TO 17 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 35.8N 85.0W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 120 NM NE AND 330 NM SE QUADRANTS. ELSEWHERE FROM
31N TO 37N W OF 73W WINDS 20 TO 33 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 37.1N 86.5W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. ELSEWHERE S OF 38N W
OF 71W WINDS TO 25 KT. SEAS TO 8 FT.

...GALE WARNING...
.LOW 42N42W 1009 MB MOVING NE 15 KT. EXCEPT WHERE DESCRIBED WITH
ISAAC ABOVE...WITHIN 180 NM N SEMICIRCLE WINDS 25 TO 35 KT. SEAS
9 TO 17 FT. ELSEWHERE FROM 40N TO 46N E OF 48W WINDS 20 TO 30
KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW JUST E OF AREA 45N34W 1003 MB. WITHIN 180
NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 10 TO 18 FT. ELSEWHERE
FROM 39N TO 48N E OF 40W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.24 HOUR FORECAST LOW 44N64W 1010 MB. WITHIN 300 NM N AND
NE...AND 240 NM SE QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.36 HOUR FORECAST LOW 44N60W 1006 MB. WITHIN 240 NM NE QUADRANT
WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 43N57W 1003 MB. WITHIN 240 NM N SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. ELSEWHERE FROM 35N TO 47N
BETWEEN 50W AND 65W WINDS 20 TO 30 KT. SEAS TO 11 FT.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH ONE CENTER 59N37W 1011 MB MOVING E 15 KT AND A
SECOND CENTER 61N47W 1013 MB NEARLY STATIONARY. E OF A LINE FROM
54N42W TO 58N50W TO 64N53W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER E OF AREA 59N30W
1009 MB. WITHIN 240 NM W AND SW QUADRANTS WINDS TO 25 KT. SEAS
TO 9 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

.24 HOUR FORECAST LOW 66N58W 1009 MB. WITHIN 120 NM E AND NE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED. E OF A LINE FROM 63N53W TO
67N58W TO THE SW COAST OF GREENLAND SE WINDS TO 25 KT. SEAS TO 8
FT.

.48 HOUR FORECAST LOW E OF AREA 64N31W 1005 MB. WITHIN 240 NM W
AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT.

.FORECASTER MILLS. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 1800 UTC THU SEP 26.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 27.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 28.

.WARNINGS.

...GULF OF MEXICO HURRICANE WARNING...
.HURRICANE HELENE NEAR 27.9N 84.6W 951 MB AT 2100 UTC SEP 26
MOVING NNE OR 025 DEG AT 20 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 240 NM NE
QUADRANT...270 NM SE QUADRANT...100 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM NE
QUADRANT...310 NM SE QUADRANT...390 NM SW QUADRANT...AND 210 NM
NW QUADRANT WITH SEAS TO 42 FT. ELSEWHERE WITHIN 25N86W TO 30N84W
TO 30N90W TO 23N93W TO 19N83W TO 23N80W TO 25N86W...INCLUDING
STRAITS OF FLORIDA AND IN YUCATAN CHANNEL...WINDS 20 TO 33 KT.
SEAS
8 TO 12 FT...EXCEPT 12 TO 22 FT E OF 87W. WITHIN 31N78W TO
31N81W TO 27N80W TO 24N81W TO 23N79W TO 25N78W TO
31N78W...INCLUDING STRAITS OF FLORIDA...SE WINDS 20 TO 30 KT.
SEAS 8 TO 10 FT.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE INLAND NEAR
35.8N 85.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 60 KT. TROPICAL
STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE...120 NM NE QUADRANT
AND 330 NM SE QUADRANT. OVER FORECAST WATERS WITHIN 29N83W TO
28N93W TO 24N95W TO 23N86W TO 26N82W TO 29N83W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN N TO NE SWELL. WITHIN 31N74W TO 31N81W
TO 28N80W TO 26N80W TO 31N74W S TO SW WINDS 20 TO 30 KT. SEAS 8
TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 37.1N
87.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST
WATERS CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8
FT.

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 LOW PRES NEAR 16N39W 1007 MB. WITHIN 20N35W TO 21N38W TO
20N40W TO 16N41W TO 15N38W TO 16N35W TO 20N35W WINDS 20 TO 30
KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17.5N44W 1006 MB. WITHIN 22N40W TO 21N44W TO 19N46W TO 16N44W TO
16N42W TO 19N39W TO 22N40W E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT
IN E SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
18.5N47W 1004 MB. WITHIN 20N45W TO 21N46W TO 20N48W TO 18N47W TO
18N46W TO 19N45W TO 20N45W E WINDS 20 TO 30 KT. SEAS 10 TO 12 FT.
ELSEWHERE WITHIN 21N41W TO 23N44W TO 23N48W TO 21N50W TO 18N49W
TO 18N43W TO 21N41W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E TO
SE SWELL. WITHIN 21N35W TO 20N37W TO 18N37W TO 17N36W TO 16N35W
TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.

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

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.