921
FZNT02 KNHC 252122
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED SEP 25 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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

SECURITE

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

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

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.HURRICANE HELENE NEAR 22.5N 86.6W 978 MB AT 2100 UTC SEP 25
MOVING N OR 355 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 210 NM NE
QUADRANT...300 NM SE QUADRANT...90 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...
210 NM SE QUADRANT...90 NM SW QUADRANT...AND 120 NM NW QUADRANT
WITH SEAS TO 28 FT. ELSEWHERE N OF 17N BETWEEN 80W AND 87W
INCLUDING THE YUCATAN CHANNEL...AND S OF 26N BETWEEN 80W AND
89W...INCLUDING THE STRAITS OF FLORIDA...WINDS 20 TO 33 KT. SEAS
8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 27.4N 85.2W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS
WITHIN 270 NM E SEMICIRCLE AND 140 NM W SEMICIRCLE. SEAS 12 FT
OR GREATER FROM 22N TO 30N BETWEEN 80W AND 90W WITH SEAS TO 40
FT. ELSEWHERE FROM 22N TO 30N BETWEEN 80W AND 92W...INCLUDING
THE STRAITS OF FLORIDA WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA N OF 20N W OF 80W...INCLUDING THE YUCATAN
CHANNEL...AND FROM 22N TO 28N E OF 94W WINDS 20 KT OR LESS. SEAS
8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL HELENE N OF AREA NEAR 36.1N
86.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 55 KT. TROPICAL STORM
FORCE WINDS WITHIN 0 NM W SEMICIRCLE...50 NM NE QUADRANT AND 30
NM SE QUADRANT. OVER GULF ON MEXICO WATERS 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 12 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...
NEAR 15N36W 1008 MB. FROM 15N TO 19N E OF 37W NE TO E WINDS 20
TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N38W 1006 MB. FROM 16N TO 20N W OF 40N NE TO E WINDS 20 TO 30
KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N42W 1004 MB. FROM 17N TO 21N BETWEEN 39W AND 44W NE TO E
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. FROM 15N TO 17N BETWEEN 40W
AND 44W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.

.ATLC 06 HOUR FORECAST N OF 27N W OF 78W SE WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT. FROM 23N TO 27N W OF 79W S WINDS 20 TO 30
KT. SEAS BUILDING TO 8 FT.
.24 HOUR FORECAST FROM 23N TO 30N W OF 78W SE TO S WINDS 20 TO
30 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST N OF 28N NW OF A LINE FROM 31N74W TO 28N78W S
TO SW WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.