692
FZNT01 KWBC 261602
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 26.
24 HOUR FORECAST VALID 1200 UTC SEP 27.
48 HOUR FORECAST VALID 1200 UTC SEP 28.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM ISAAC NEAR 37.3N 51.7W 997 MB AT 1500 UTC SEP 26
MOVING E OR 080 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM E AND 50 NM
W SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER...
EXCEPT 60 NM NE QUADRANT...WITH SEAS TO 15 FT.
.24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 37.9N 46.9W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NE AND SW...AND 70 NM SE AND 50 NM NW QUADRANTS.
SEAS 12 FT OR GREATER WITHIN 150 NM OF CENTER WITH SEAS TO 21
FT. ELSEWHERE WITHIN 300 NM E SEMICIRCLE...AND 240 NM SW AND 360
NM NW QUADRANTS WINDS 20 TO 33 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST HURRICANE ISAAC 39.9N 39.9W. MAXIMUM SUSTAINED
WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 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 29 FT. ELSEWHERE
WITHIN 300 NM N SEMICIRCLE...AND 420 NM SE AND 360 NM SW
QUADRANTS WINDS 20 TO 33 KT. SEAS 8 TO 16 FT.

...HURRICANE WARNING...
.12 HOUR FORECAST HURRICANE HELENE NEAR 28.8N 84.3W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 270 NM E AND 120 NM W SEMICIRCLES. ELSEWHERE FROM 31N TO
35N W OF 76W WINDS 20 TO 33 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST TROPICAL STORM HELENE INLAND NEAR 33.9N 84.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 120 NM NE AND 330 NM SE QUADRANTS...AND 60 NM W
SEMICIRCLE. ELSEWHERE FROM 31N TO 36N W OF 74W WINDS 20 TO 33
KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 36.5N 87.5W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. ELSEWHERE S OF 38N W
OF 73W WINDS TO 25 KT. SEAS TO 10 FT.

...GALE WARNING...
.LOW 41N44W 1010 MB MOVING NE 10 KT. EXCEPT WHERE DESCRIBED WITH
ISAAC ABOVE...WITHIN 240 NM N SEMICIRCLE WINDS 25 TO 35 KT. SEAS
8 TO 15 FT.
.24 HOUR FORECAST LOW 44N37W 1007 MB. WITHIN 240 NM N AND NW
SEMICIRCLES WINDS 25 TO 40 KT. SEAS 9 TO 16 FT. ELSEWHERE FROM
35N TO 48N E OF 41W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.LOW 60N40W 1009 MB MOVING SE 10 KT. WITHIN 300 NM W AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. ELSEWHERE WITHIN
300 NM S AND SE...AND 360 NM W AND SW QUADRANTS WINDS 20 TO 30
KT. SEAS TO 12 FT.
.24 HUR FORECAST LOW E OF AREA 59N32W 1009 MB. WITHIN 240 NM SW
QUADRANT WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.48 HOUR FORECAST LOW 44N58W 1004 MB. WITHIN 180 NM NE AND 240
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE
WITHIN 240 NM E SEMICIRCLE...AND WITHIN 420 NM SW AND 360 NM NW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST LOW E OF AREA 64N31W 1007 MB. WITHIN 240 NM W
AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 9 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 1200 UTC THU SEP 26.
24 HOUR FORECAST VALID 1200 UTC FRI SEP 27.
48 HOUR FORECAST VALID 1200 UTC SAT SEP 28.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.HURRICANE HELENE NEAR 25.7N 85.6W 960 MB AT 1500 UTC SEP 26
MOVING NNE OR 015 DEG AT 21 KT. MAXIMUM SUSTAINED WINDS 85 KT
GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 250 NM NE
QUADRANT...300 NM SE QUADRANT...100 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM NE
QUADRANT...210 NM SE QUADRANT...240 NM SW QUADRANT...AND 210 NM
NW QUADRANT WITH SEAS TO 35 FT. ELSEWHERE WITHIN 30N84W TO 29N91W
TO 23N93W TO 19N85W TO 19N81W TO 22N80W TO 30N84W...INCLUDING
STRAITS OF FLORIDA AND IN YUCATAN CHANNEL...WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT. WITHIN 29N78W TO 31N80W TO 30N81W TO 27N80W TO
24N81W TO 24N78W TO 29N78W...INCLUDING STRAITS OF FLORIDA...SE
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST TROPICAL STORM HELENE INLAND NEAR 33.9N 84.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM W SEMICIRCLE...120 NM NE QUADRANT AND 330 NM
SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 SW QUADRANT WITH
SEAS TO 14 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 30N84W TO
30N85W TO 30N87W TO 29N87W TO 28N84W TO 28N83W TO 30N84W SW
WINDS 20 TO 25 KT. SEAS 9 TO 12 FT IN W SWELL. REMAINDER OF
AREA WITHIN 28N83W TO 30N90W TO 27N96W TO 24N93W TO 23N86W TO
25N82W TO 28N83W...INCLUDING STRAITS OF FLORIDA...WINDS 20 KT
OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. WITHIN 31N75W TO 31N81W
TO 27N80W TO 25N80W TO 29N76W TO 31N75W S WINDS 20 TO 30 KT.
SEAS 8 TO 14 FT...HIGHEST N OF 29N.
.36 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 36.4N
86.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 36.5N
87.5W. 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 15.0N 38.0W 1008 MB. WITHIN 19N35W TO 19N37W
TO 16N38W TO 15N37W TO 15N35W TO 19N35W WINDS 20 TO 30 KT. SEAS
9 TO 10 FT. ELSEWHERE WITHIN 20N35W TO 19N37W TO 21N37W TO 20N39W
TO 16N39W TO 15N35W TO 20N35W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN NE TO E SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N43W 1006 MB. WITHIN 20N40W TO 20N43W TO 19N44W TO 17N43W TO
16N41W TO 17N39W TO 20N40W WINDS 20 TO 30 KT. SEAS 9 TO
12 FT. ELSEWHERE WITHIN 20N35W TO 23N39W TO 23N41W TO 18N44W TO
16N43W TO 17N37W TO 20N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN E SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
18.5N46W 1004 MB. WITHIN 20N43W TO 21N44W TO 21N46W TO 20N47W TO
19N46W TO 18N43W TO 20N43W WINDS 20 TO 30 KT. SEAS 9 TO 12 FT.
ELSEWHERE WITHIN 21N41W TO 22N42W TO 22N47W TO 19N48W TO
18N47W TO 19N42W TO 21N41W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN E SWELL. WITHIN 22N35W TO 21N38W TO 20N38W TO 19N37W TO
18N35W TO 22N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E
SWELL.

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

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.